./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa --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 5c2ae4f9e22cc68a37a2a30aa0a104b47e23e2c796ef551349d7d369f3cb3d78 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:11:03,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:11:03,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:11:03,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:11:03,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:11:03,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:11:03,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:11:03,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:11:03,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:11:03,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:11:03,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:11:03,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:11:03,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:11:03,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:11:03,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:11:03,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:11:03,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:11:03,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:11:03,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:11:03,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:11:03,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:11:03,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:11:03,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:11:03,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:11:03,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:11:03,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:11:03,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:11:03,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:11:03,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:11:03,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:11:03,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:11:03,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:11:03,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:11:03,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:11:03,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:11:03,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:11:03,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:11:03,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:11:03,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:11:03,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:11:03,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:11:03,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 18:11:03,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:11:03,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:11:03,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:11:03,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:11:03,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:11:03,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:11:03,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:11:03,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:11:03,651 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:11:03,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:11:03,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:11:03,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:11:03,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:11:03,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:11:03,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:03,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:11:03,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:11:03,654 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_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2ae4f9e22cc68a37a2a30aa0a104b47e23e2c796ef551349d7d369f3cb3d78 [2021-12-06 18:11:03,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:11:03,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:11:03,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:11:03,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:11:03,842 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:11:03,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-06 18:11:03,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/data/ad2e53bc9/7c3d6197acae4083a923f000002f3141/FLAGb6b329412 [2021-12-06 18:11:04,476 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:11:04,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-06 18:11:04,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/data/ad2e53bc9/7c3d6197acae4083a923f000002f3141/FLAGb6b329412 [2021-12-06 18:11:04,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/data/ad2e53bc9/7c3d6197acae4083a923f000002f3141 [2021-12-06 18:11:04,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:11:04,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:11:04,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:04,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:11:04,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:11:04,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:04" (1/1) ... [2021-12-06 18:11:04,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff778e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:04, skipping insertion in model container [2021-12-06 18:11:04,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:04" (1/1) ... [2021-12-06 18:11:04,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:11:04,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:11:05,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i[239090,239103] [2021-12-06 18:11:05,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:05,733 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:11:05,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i[239090,239103] [2021-12-06 18:11:05,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:06,004 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:11:06,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06 WrapperNode [2021-12-06 18:11:06,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:06,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:06,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:11:06,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:11:06,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,121 INFO L137 Inliner]: procedures = 170, calls = 847, calls flagged for inlining = 47, calls inlined = 39, statements flattened = 1558 [2021-12-06 18:11:06,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:06,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:11:06,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:11:06,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:11:06,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:11:06,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:11:06,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:11:06,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:11:06,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (1/1) ... [2021-12-06 18:11:06,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:06,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:06,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:11:06,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d887bff-8d19-4f69-9801-5933f19896af/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:11:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 18:11:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_power_ctrl [2021-12-06 18:11:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_power_ctrl [2021-12-06 18:11:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 18:11:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 18:11:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 18:11:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-06 18:11:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-12-06 18:11:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 18:11:06,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 18:11:06,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_xilinx_rw [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_xilinx_rw [2021-12-06 18:11:06,318 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-06 18:11:06,318 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 18:11:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:11:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-06 18:11:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_rc_query [2021-12-06 18:11:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_rc_query [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 18:11:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 18:11:06,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 18:11:06,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-06 18:11:06,320 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-06 18:11:06,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:11:06,320 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_i2c_xfer [2021-12-06 18:11:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_i2c_xfer [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 18:11:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-06 18:11:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-06 18:11:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 18:11:06,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:11:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:11:06,596 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:11:06,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:11:06,835 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 18:11:14,657 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:11:14,668 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:11:14,668 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 18:11:14,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:14 BoogieIcfgContainer [2021-12-06 18:11:14,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:11:14,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:11:14,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:11:14,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:11:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:11:04" (1/3) ... [2021-12-06 18:11:14,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135eccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:14, skipping insertion in model container [2021-12-06 18:11:14,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:06" (2/3) ... [2021-12-06 18:11:14,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135eccfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:14, skipping insertion in model container [2021-12-06 18:11:14,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:14" (3/3) ... [2021-12-06 18:11:14,679 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-06 18:11:14,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:11:14,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:11:14,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:11:14,742 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:11:14,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:11:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 383 states, 284 states have (on average 1.4014084507042253) internal successors, (398), 300 states have internal predecessors, (398), 74 states have call successors, (74), 24 states have call predecessors, (74), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-06 18:11:14,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 18:11:14,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:14,785 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:14,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:14,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2016544780, now seen corresponding path program 1 times [2021-12-06 18:11:14,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:14,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431252013] [2021-12-06 18:11:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:14,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-06 18:11:15,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:15,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431252013] [2021-12-06 18:11:15,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431252013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:15,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:15,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:11:15,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473892549] [2021-12-06 18:11:15,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:15,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:11:15,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:11:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:11:15,681 INFO L87 Difference]: Start difference. First operand has 383 states, 284 states have (on average 1.4014084507042253) internal successors, (398), 300 states have internal predecessors, (398), 74 states have call successors, (74), 24 states have call predecessors, (74), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:11:17,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:19,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:20,657 INFO L93 Difference]: Finished difference Result 891 states and 1347 transitions. [2021-12-06 18:11:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:11:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 141 [2021-12-06 18:11:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:20,677 INFO L225 Difference]: With dead ends: 891 [2021-12-06 18:11:20,677 INFO L226 Difference]: Without dead ends: 500 [2021-12-06 18:11:20,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:20,688 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 305 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 231 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:20,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1185 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 267 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 18:11:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-06 18:11:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 370. [2021-12-06 18:11:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 279 states have (on average 1.3727598566308243) internal successors, (383), 287 states have internal predecessors, (383), 68 states have call successors, (68), 23 states have call predecessors, (68), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-06 18:11:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 510 transitions. [2021-12-06 18:11:20,755 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 510 transitions. Word has length 141 [2021-12-06 18:11:20,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:20,756 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 510 transitions. [2021-12-06 18:11:20,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 18:11:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 510 transitions. [2021-12-06 18:11:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 18:11:20,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:20,759 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:20,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:11:20,759 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash -892191384, now seen corresponding path program 1 times [2021-12-06 18:11:20,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267867261] [2021-12-06 18:11:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:20,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-06 18:11:21,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267867261] [2021-12-06 18:11:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267867261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:21,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:21,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:21,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732121406] [2021-12-06 18:11:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:21,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:21,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:21,314 INFO L87 Difference]: Start difference. First operand 370 states and 510 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:11:23,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:25,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:26,474 INFO L93 Difference]: Finished difference Result 1283 states and 1861 transitions. [2021-12-06 18:11:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:11:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 141 [2021-12-06 18:11:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:26,482 INFO L225 Difference]: With dead ends: 1283 [2021-12-06 18:11:26,482 INFO L226 Difference]: Without dead ends: 941 [2021-12-06 18:11:26,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:26,485 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 1487 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 746 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:26,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1337 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 382 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-12-06 18:11:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-12-06 18:11:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 679. [2021-12-06 18:11:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 521 states have (on average 1.381957773512476) internal successors, (720), 529 states have internal predecessors, (720), 114 states have call successors, (114), 44 states have call predecessors, (114), 43 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 18:11:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 939 transitions. [2021-12-06 18:11:26,534 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 939 transitions. Word has length 141 [2021-12-06 18:11:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:26,534 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 939 transitions. [2021-12-06 18:11:26,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 18:11:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 939 transitions. [2021-12-06 18:11:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 18:11:26,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:26,537 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:26,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:11:26,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1814063057, now seen corresponding path program 1 times [2021-12-06 18:11:26,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:26,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023075218] [2021-12-06 18:11:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:26,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 18:11:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-06 18:11:26,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:26,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023075218] [2021-12-06 18:11:26,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023075218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:26,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:26,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:26,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464180562] [2021-12-06 18:11:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:26,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:26,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:26,931 INFO L87 Difference]: Start difference. First operand 679 states and 939 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:28,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:30,125 INFO L93 Difference]: Finished difference Result 2463 states and 3575 transitions. [2021-12-06 18:11:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:11:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 145 [2021-12-06 18:11:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:30,143 INFO L225 Difference]: With dead ends: 2463 [2021-12-06 18:11:30,143 INFO L226 Difference]: Without dead ends: 1812 [2021-12-06 18:11:30,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:30,148 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 1558 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 788 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:30,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 1320 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 367 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 18:11:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-12-06 18:11:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1286. [2021-12-06 18:11:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 994 states have (on average 1.3843058350100603) internal successors, (1376), 1003 states have internal predecessors, (1376), 206 states have call successors, (206), 86 states have call predecessors, (206), 85 states have return successors, (197), 196 states have call predecessors, (197), 197 states have call successors, (197) [2021-12-06 18:11:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1779 transitions. [2021-12-06 18:11:30,217 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1779 transitions. Word has length 145 [2021-12-06 18:11:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:30,218 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 1779 transitions. [2021-12-06 18:11:30,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1779 transitions. [2021-12-06 18:11:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 18:11:30,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:30,220 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:30,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:11:30,220 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1455791905, now seen corresponding path program 1 times [2021-12-06 18:11:30,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129139787] [2021-12-06 18:11:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:30,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 18:11:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-06 18:11:30,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129139787] [2021-12-06 18:11:30,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129139787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:30,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:30,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:30,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939808994] [2021-12-06 18:11:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:30,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:30,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:30,633 INFO L87 Difference]: Start difference. First operand 1286 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:32,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:33,919 INFO L93 Difference]: Finished difference Result 4432 states and 6441 transitions. [2021-12-06 18:11:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:11:33,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2021-12-06 18:11:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:33,948 INFO L225 Difference]: With dead ends: 4432 [2021-12-06 18:11:33,948 INFO L226 Difference]: Without dead ends: 3174 [2021-12-06 18:11:33,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:33,957 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1231 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 653 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:33,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 1500 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 18:11:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-12-06 18:11:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2292. [2021-12-06 18:11:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1788 states have (on average 1.3937360178970917) internal successors, (2492), 1799 states have internal predecessors, (2492), 350 states have call successors, (350), 154 states have call predecessors, (350), 153 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-06 18:11:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3183 transitions. [2021-12-06 18:11:34,057 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3183 transitions. Word has length 151 [2021-12-06 18:11:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:34,057 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3183 transitions. [2021-12-06 18:11:34,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3183 transitions. [2021-12-06 18:11:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-06 18:11:34,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:34,059 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:34,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:11:34,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1603423522, now seen corresponding path program 1 times [2021-12-06 18:11:34,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:34,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022127396] [2021-12-06 18:11:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:34,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-06 18:11:34,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:34,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022127396] [2021-12-06 18:11:34,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022127396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:34,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:34,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:34,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067933483] [2021-12-06 18:11:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:34,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:34,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:34,545 INFO L87 Difference]: Start difference. First operand 2292 states and 3183 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:36,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:38,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:40,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:42,152 INFO L93 Difference]: Finished difference Result 8426 states and 12428 transitions. [2021-12-06 18:11:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:11:42,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2021-12-06 18:11:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:42,201 INFO L225 Difference]: With dead ends: 8426 [2021-12-06 18:11:42,201 INFO L226 Difference]: Without dead ends: 6162 [2021-12-06 18:11:42,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:42,215 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1018 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 471 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:42,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 2023 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 603 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2021-12-06 18:11:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-12-06 18:11:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 4473. [2021-12-06 18:11:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4473 states, 3509 states have (on average 1.3946993445426048) internal successors, (4894), 3523 states have internal predecessors, (4894), 664 states have call successors, (664), 301 states have call predecessors, (664), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-06 18:11:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 6268 transitions. [2021-12-06 18:11:42,414 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 6268 transitions. Word has length 161 [2021-12-06 18:11:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:42,415 INFO L470 AbstractCegarLoop]: Abstraction has 4473 states and 6268 transitions. [2021-12-06 18:11:42,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 6268 transitions. [2021-12-06 18:11:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 18:11:42,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:42,417 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:42,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:11:42,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1833539704, now seen corresponding path program 1 times [2021-12-06 18:11:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:42,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116869298] [2021-12-06 18:11:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:42,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-06 18:11:42,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116869298] [2021-12-06 18:11:42,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116869298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:42,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:42,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:42,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783479954] [2021-12-06 18:11:42,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:42,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:42,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:42,821 INFO L87 Difference]: Start difference. First operand 4473 states and 6268 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:44,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:45,507 INFO L93 Difference]: Finished difference Result 6117 states and 9151 transitions. [2021-12-06 18:11:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:11:45,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-06 18:11:45,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:45,539 INFO L225 Difference]: With dead ends: 6117 [2021-12-06 18:11:45,539 INFO L226 Difference]: Without dead ends: 6114 [2021-12-06 18:11:45,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:11:45,543 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 1057 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 438 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:45,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 830 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 166 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 18:11:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2021-12-06 18:11:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 4472. [2021-12-06 18:11:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 3509 states have (on average 1.3944143630664008) internal successors, (4893), 3522 states have internal predecessors, (4893), 663 states have call successors, (663), 301 states have call predecessors, (663), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-06 18:11:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6266 transitions. [2021-12-06 18:11:45,731 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6266 transitions. Word has length 162 [2021-12-06 18:11:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:45,731 INFO L470 AbstractCegarLoop]: Abstraction has 4472 states and 6266 transitions. [2021-12-06 18:11:45,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6266 transitions. [2021-12-06 18:11:45,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 18:11:45,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:45,733 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:45,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:11:45,734 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:45,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1005212443, now seen corresponding path program 1 times [2021-12-06 18:11:45,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:45,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878120078] [2021-12-06 18:11:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:45,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-06 18:11:46,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:46,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878120078] [2021-12-06 18:11:46,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878120078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:46,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:46,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:46,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694795672] [2021-12-06 18:11:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:46,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:46,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:46,152 INFO L87 Difference]: Start difference. First operand 4472 states and 6266 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:48,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:49,125 INFO L93 Difference]: Finished difference Result 6116 states and 9149 transitions. [2021-12-06 18:11:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:11:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 163 [2021-12-06 18:11:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:49,157 INFO L225 Difference]: With dead ends: 6116 [2021-12-06 18:11:49,157 INFO L226 Difference]: Without dead ends: 6113 [2021-12-06 18:11:49,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:11:49,161 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 903 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 338 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:49,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1073 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 18:11:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-12-06 18:11:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 4471. [2021-12-06 18:11:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4471 states, 3509 states have (on average 1.3941293815901967) internal successors, (4892), 3521 states have internal predecessors, (4892), 662 states have call successors, (662), 301 states have call predecessors, (662), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-06 18:11:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6264 transitions. [2021-12-06 18:11:49,377 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6264 transitions. Word has length 163 [2021-12-06 18:11:49,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:49,377 INFO L470 AbstractCegarLoop]: Abstraction has 4471 states and 6264 transitions. [2021-12-06 18:11:49,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6264 transitions. [2021-12-06 18:11:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-06 18:11:49,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:49,381 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:49,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:11:49,381 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1096866261, now seen corresponding path program 1 times [2021-12-06 18:11:49,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:49,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643444985] [2021-12-06 18:11:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:49,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-06 18:11:49,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:49,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643444985] [2021-12-06 18:11:49,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643444985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:49,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:49,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:49,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107418444] [2021-12-06 18:11:49,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:49,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:49,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:49,805 INFO L87 Difference]: Start difference. First operand 4471 states and 6264 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:51,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:52,713 INFO L93 Difference]: Finished difference Result 6115 states and 9147 transitions. [2021-12-06 18:11:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:11:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 164 [2021-12-06 18:11:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:52,739 INFO L225 Difference]: With dead ends: 6115 [2021-12-06 18:11:52,739 INFO L226 Difference]: Without dead ends: 6112 [2021-12-06 18:11:52,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:11:52,743 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 934 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 349 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:52,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1049 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 18:11:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2021-12-06 18:11:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 4470. [2021-12-06 18:11:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3509 states have (on average 1.3938444001139927) internal successors, (4891), 3520 states have internal predecessors, (4891), 661 states have call successors, (661), 301 states have call predecessors, (661), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-06 18:11:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6262 transitions. [2021-12-06 18:11:52,941 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6262 transitions. Word has length 164 [2021-12-06 18:11:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:52,941 INFO L470 AbstractCegarLoop]: Abstraction has 4470 states and 6262 transitions. [2021-12-06 18:11:52,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6262 transitions. [2021-12-06 18:11:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 18:11:52,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:52,943 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:52,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:11:52,943 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 356837544, now seen corresponding path program 1 times [2021-12-06 18:11:52,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377666281] [2021-12-06 18:11:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:52,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-06 18:11:53,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377666281] [2021-12-06 18:11:53,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377666281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:53,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:53,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:53,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303956087] [2021-12-06 18:11:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:53,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:53,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:53,304 INFO L87 Difference]: Start difference. First operand 4470 states and 6262 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:55,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:11:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:56,639 INFO L93 Difference]: Finished difference Result 16378 states and 24414 transitions. [2021-12-06 18:11:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:11:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 165 [2021-12-06 18:11:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:56,681 INFO L225 Difference]: With dead ends: 16378 [2021-12-06 18:11:56,682 INFO L226 Difference]: Without dead ends: 11927 [2021-12-06 18:11:56,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:56,702 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1432 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 726 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:56,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 1339 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 338 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 18:11:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2021-12-06 18:11:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 8715. [2021-12-06 18:11:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8715 states, 6871 states have (on average 1.3954300684034346) internal successors, (9588), 6899 states have internal predecessors, (9588), 1270 states have call successors, (1270), 576 states have call predecessors, (1270), 573 states have return successors, (1486), 1239 states have call predecessors, (1486), 1262 states have call successors, (1486) [2021-12-06 18:11:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8715 states to 8715 states and 12344 transitions. [2021-12-06 18:11:57,052 INFO L78 Accepts]: Start accepts. Automaton has 8715 states and 12344 transitions. Word has length 165 [2021-12-06 18:11:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 8715 states and 12344 transitions. [2021-12-06 18:11:57,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 18:11:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8715 states and 12344 transitions. [2021-12-06 18:11:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 18:11:57,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:57,058 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:57,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:11:57,058 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1358796232, now seen corresponding path program 1 times [2021-12-06 18:11:57,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724293557] [2021-12-06 18:11:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:57,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:11:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:11:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:11:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:11:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:11:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:11:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:11:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:11:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:11:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:11:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:11:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:11:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:11:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:11:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 18:11:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 18:11:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-12-06 18:11:57,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724293557] [2021-12-06 18:11:57,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724293557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:57,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:57,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:11:57,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875722481] [2021-12-06 18:11:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:57,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:11:57,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:11:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:57,492 INFO L87 Difference]: Start difference. First operand 8715 states and 12344 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 18:11:59,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:01,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:03,364 INFO L93 Difference]: Finished difference Result 20526 states and 30185 transitions. [2021-12-06 18:12:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:12:03,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 223 [2021-12-06 18:12:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:03,402 INFO L225 Difference]: With dead ends: 20526 [2021-12-06 18:12:03,402 INFO L226 Difference]: Without dead ends: 11839 [2021-12-06 18:12:03,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:12:03,433 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 1077 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 438 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:03,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2304 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 580 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 18:12:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11839 states. [2021-12-06 18:12:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11839 to 8688. [2021-12-06 18:12:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8688 states, 6844 states have (on average 1.3933372296902395) internal successors, (9536), 6883 states have internal predecessors, (9536), 1270 states have call successors, (1270), 576 states have call predecessors, (1270), 573 states have return successors, (1374), 1228 states have call predecessors, (1374), 1262 states have call successors, (1374) [2021-12-06 18:12:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 12180 transitions. [2021-12-06 18:12:03,791 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 12180 transitions. Word has length 223 [2021-12-06 18:12:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:03,791 INFO L470 AbstractCegarLoop]: Abstraction has 8688 states and 12180 transitions. [2021-12-06 18:12:03,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 18:12:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 12180 transitions. [2021-12-06 18:12:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 18:12:03,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:03,796 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:03,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:12:03,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -657731654, now seen corresponding path program 1 times [2021-12-06 18:12:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084272806] [2021-12-06 18:12:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:03,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:12:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:12:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:12:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:12:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:12:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:12:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:12:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:12:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:12:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:12:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:12:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 18:12:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 18:12:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-12-06 18:12:04,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084272806] [2021-12-06 18:12:04,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084272806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:04,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:04,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:12:04,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915137077] [2021-12-06 18:12:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:04,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:12:04,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:12:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:12:04,388 INFO L87 Difference]: Start difference. First operand 8688 states and 12180 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 18:12:06,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:08,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:10,220 INFO L93 Difference]: Finished difference Result 12114 states and 17689 transitions. [2021-12-06 18:12:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:12:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 223 [2021-12-06 18:12:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:10,257 INFO L225 Difference]: With dead ends: 12114 [2021-12-06 18:12:10,257 INFO L226 Difference]: Without dead ends: 10865 [2021-12-06 18:12:10,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:12:10,266 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 312 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 203 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:10,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2728 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 692 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 18:12:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2021-12-06 18:12:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 8371. [2021-12-06 18:12:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 6565 states have (on average 1.3853769992383853) internal successors, (9095), 6609 states have internal predecessors, (9095), 1226 states have call successors, (1226), 569 states have call predecessors, (1226), 579 states have return successors, (1348), 1192 states have call predecessors, (1348), 1220 states have call successors, (1348) [2021-12-06 18:12:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 11669 transitions. [2021-12-06 18:12:10,600 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 11669 transitions. Word has length 223 [2021-12-06 18:12:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:10,601 INFO L470 AbstractCegarLoop]: Abstraction has 8371 states and 11669 transitions. [2021-12-06 18:12:10,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 18:12:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 11669 transitions. [2021-12-06 18:12:10,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 18:12:10,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:10,606 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 3, 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] [2021-12-06 18:12:10,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:12:10,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 517653439, now seen corresponding path program 1 times [2021-12-06 18:12:10,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:10,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85223219] [2021-12-06 18:12:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:10,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:12:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:12:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:12:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:12:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:12:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:12:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:12:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:12:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:12:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:12:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 18:12:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 18:12:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:12:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-12-06 18:12:11,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85223219] [2021-12-06 18:12:11,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85223219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:11,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:11,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:12:11,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587184818] [2021-12-06 18:12:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:11,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:12:11,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:11,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:12:11,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:12:11,058 INFO L87 Difference]: Start difference. First operand 8371 states and 11669 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 18:12:13,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:15,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:17,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:19,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:21,136 INFO L93 Difference]: Finished difference Result 11539 states and 16568 transitions. [2021-12-06 18:12:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:12:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 233 [2021-12-06 18:12:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:21,155 INFO L225 Difference]: With dead ends: 11539 [2021-12-06 18:12:21,155 INFO L226 Difference]: Without dead ends: 7724 [2021-12-06 18:12:21,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:12:21,168 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 612 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 191 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:21,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 2696 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 930 Invalid, 4 Unknown, 0 Unchecked, 9.7s Time] [2021-12-06 18:12:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2021-12-06 18:12:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 5032. [2021-12-06 18:12:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 3896 states have (on average 1.3585728952772074) internal successors, (5293), 3916 states have internal predecessors, (5293), 737 states have call successors, (737), 388 states have call predecessors, (737), 398 states have return successors, (805), 727 states have call predecessors, (805), 733 states have call successors, (805) [2021-12-06 18:12:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 6835 transitions. [2021-12-06 18:12:21,418 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 6835 transitions. Word has length 233 [2021-12-06 18:12:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:21,418 INFO L470 AbstractCegarLoop]: Abstraction has 5032 states and 6835 transitions. [2021-12-06 18:12:21,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 18:12:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 6835 transitions. [2021-12-06 18:12:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-06 18:12:21,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:21,424 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:21,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:12:21,424 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash 868374850, now seen corresponding path program 1 times [2021-12-06 18:12:21,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:21,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165387196] [2021-12-06 18:12:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:21,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:12:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:12:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:12:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:12:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:12:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:12:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:12:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:12:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:12:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:12:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:12:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 18:12:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 18:12:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 18:12:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 18:12:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 18:12:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-12-06 18:12:22,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:22,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165387196] [2021-12-06 18:12:22,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165387196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:22,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:22,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:12:22,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186178751] [2021-12-06 18:12:22,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:22,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:12:22,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:12:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:12:22,115 INFO L87 Difference]: Start difference. First operand 5032 states and 6835 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:12:24,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:25,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:25,464 INFO L93 Difference]: Finished difference Result 9655 states and 13532 transitions. [2021-12-06 18:12:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:12:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 255 [2021-12-06 18:12:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:25,475 INFO L225 Difference]: With dead ends: 9655 [2021-12-06 18:12:25,475 INFO L226 Difference]: Without dead ends: 4651 [2021-12-06 18:12:25,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:12:25,485 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 986 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 492 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 2072 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 512 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 18:12:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2021-12-06 18:12:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 2861. [2021-12-06 18:12:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2198 states have (on average 1.3475887170154686) internal successors, (2962), 2201 states have internal predecessors, (2962), 428 states have call successors, (428), 236 states have call predecessors, (428), 234 states have return successors, (426), 423 states have call predecessors, (426), 426 states have call successors, (426) [2021-12-06 18:12:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 3816 transitions. [2021-12-06 18:12:25,629 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 3816 transitions. Word has length 255 [2021-12-06 18:12:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 3816 transitions. [2021-12-06 18:12:25,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:12:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 3816 transitions. [2021-12-06 18:12:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-06 18:12:25,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:25,636 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 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] [2021-12-06 18:12:25,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:12:25,636 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash -981074928, now seen corresponding path program 1 times [2021-12-06 18:12:25,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:25,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864874525] [2021-12-06 18:12:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:25,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:12:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:12:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:12:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:12:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:12:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:12:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:12:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:12:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:12:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:12:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:12:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 18:12:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 18:12:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 18:12:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 18:12:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 18:12:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:12:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2021-12-06 18:12:26,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:26,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864874525] [2021-12-06 18:12:26,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864874525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:26,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:26,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:12:26,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288294647] [2021-12-06 18:12:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:26,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:12:26,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:12:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:12:26,191 INFO L87 Difference]: Start difference. First operand 2861 states and 3816 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 18:12:28,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:30,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:32,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:34,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:35,816 INFO L93 Difference]: Finished difference Result 4411 states and 6355 transitions. [2021-12-06 18:12:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:12:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 269 [2021-12-06 18:12:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:35,827 INFO L225 Difference]: With dead ends: 4411 [2021-12-06 18:12:35,827 INFO L226 Difference]: Without dead ends: 4408 [2021-12-06 18:12:35,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:12:35,829 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 710 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 462 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:35,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1811 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 550 Invalid, 4 Unknown, 0 Unchecked, 9.3s Time] [2021-12-06 18:12:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-12-06 18:12:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 2861. [2021-12-06 18:12:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2198 states have (on average 1.3448589626933576) internal successors, (2956), 2201 states have internal predecessors, (2956), 428 states have call successors, (428), 236 states have call predecessors, (428), 234 states have return successors, (426), 423 states have call predecessors, (426), 426 states have call successors, (426) [2021-12-06 18:12:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 3810 transitions. [2021-12-06 18:12:35,973 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 3810 transitions. Word has length 269 [2021-12-06 18:12:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:35,973 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 3810 transitions. [2021-12-06 18:12:35,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 18:12:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 3810 transitions. [2021-12-06 18:12:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 18:12:35,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:35,979 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:35,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:12:35,979 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash -397996256, now seen corresponding path program 1 times [2021-12-06 18:12:35,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:35,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840541893] [2021-12-06 18:12:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:35,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 18:12:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 18:12:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 18:12:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 18:12:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 18:12:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 18:12:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 18:12:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 18:12:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 18:12:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 18:12:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 18:12:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 18:12:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 18:12:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 18:12:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 18:12:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 18:12:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 18:12:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 18:12:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 18:12:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:12:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-12-06 18:12:36,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:36,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840541893] [2021-12-06 18:12:36,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840541893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:36,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:36,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:12:36,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238651051] [2021-12-06 18:12:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:36,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:12:36,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:12:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:12:36,448 INFO L87 Difference]: Start difference. First operand 2861 states and 3810 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 18:12:38,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:40,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:42,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:44,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:12:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:46,246 INFO L93 Difference]: Finished difference Result 4801 states and 6910 transitions. [2021-12-06 18:12:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:12:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 275 [2021-12-06 18:12:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:46,247 INFO L225 Difference]: With dead ends: 4801 [2021-12-06 18:12:46,247 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:12:46,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:12:46,254 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 415 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 157 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:46,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 2872 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 854 Invalid, 4 Unknown, 0 Unchecked, 9.4s Time] [2021-12-06 18:12:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:12:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:12:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:12:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:12:46,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 275 [2021-12-06 18:12:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:46,256 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:12:46,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 18:12:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:12:46,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:12:46,258 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:12:46,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:12:46,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.