./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-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y --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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:54:00,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:54:00,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:54:00,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:54:00,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:54:00,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:54:00,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:54:00,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:54:00,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:54:00,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:54:00,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:54:00,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:54:00,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:54:00,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:54:00,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:54:00,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:54:00,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:54:00,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:54:00,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:54:00,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:54:00,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:54:00,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:54:00,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:54:00,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:54:00,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:54:00,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:54:00,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:54:00,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:54:00,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:54:00,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:54:00,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:54:00,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:54:00,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:54:00,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:54:00,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:54:00,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:54:00,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:54:00,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:54:00,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:54:00,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:54:00,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:54:00,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:54:00,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:54:00,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:54:00,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:54:00,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:54:00,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:54:00,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:54:00,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:54:00,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:54:00,313 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:54:00,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:54:00,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:54:00,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:54:00,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:54:00,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:54:00,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:54:00,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:54:00,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:54:00,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:54:00,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:54:00,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:54:00,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:54:00,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:54:00,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:54:00,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:54:00,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:54:00,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:54:00,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:54:00,318 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:54:00,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:54:00,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:54:00,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:54:00,320 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_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-11-13 17:54:00,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:54:00,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:54:00,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:54:00,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:54:00,740 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:54:00,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 17:54:00,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/data/e57f3f0e8/e7487292cef8469481160a1a684e9a87/FLAG24fba5f4e [2021-11-13 17:54:02,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:54:02,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 17:54:02,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/data/e57f3f0e8/e7487292cef8469481160a1a684e9a87/FLAG24fba5f4e [2021-11-13 17:54:02,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/data/e57f3f0e8/e7487292cef8469481160a1a684e9a87 [2021-11-13 17:54:02,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:54:02,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:54:02,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:02,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:54:02,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:54:02,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:02" (1/1) ... [2021-11-13 17:54:02,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d14a203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:02, skipping insertion in model container [2021-11-13 17:54:02,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:54:02" (1/1) ... [2021-11-13 17:54:02,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:54:02,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:54:05,885 WARN L228 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_8207d1b9-167f-43b3-8b69-990432c18e19/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 17:54:05,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:06,076 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:54:06,998 WARN L228 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_8207d1b9-167f-43b3-8b69-990432c18e19/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 17:54:07,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:54:07,206 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:54:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07 WrapperNode [2021-11-13 17:54:07,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:54:07,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:54:07,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:54:07,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:54:07,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:54:07,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:54:07,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:54:07,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:54:07,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:07,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:08,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:08,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:54:08,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:54:08,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:54:08,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:54:08,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (1/1) ... [2021-11-13 17:54:08,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:54:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:54:08,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:54:08,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:54:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-11-13 17:54:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-11-13 17:54:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2021-11-13 17:54:08,199 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2021-11-13 17:54:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:54:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:54:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 17:54:08,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 17:54:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:54:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:54:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:54:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:54:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2021-11-13 17:54:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2021-11-13 17:54:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2021-11-13 17:54:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2021-11-13 17:54:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 17:54:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 17:54:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 17:54:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 17:54:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:54:08,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:54:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2021-11-13 17:54:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2021-11-13 17:54:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2021-11-13 17:54:08,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2021-11-13 17:54:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:54:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:54:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:54:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:54:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:54:08,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:54:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2021-11-13 17:54:08,207 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2021-11-13 17:54:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 17:54:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 17:54:08,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 17:54:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-13 17:54:08,208 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2021-11-13 17:54:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2021-11-13 17:54:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-13 17:54:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-13 17:54:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2021-11-13 17:54:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2021-11-13 17:54:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2021-11-13 17:54:08,210 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2021-11-13 17:54:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-11-13 17:54:08,211 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-11-13 17:54:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 17:54:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 17:54:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2021-11-13 17:54:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2021-11-13 17:54:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:54:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2021-11-13 17:54:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2021-11-13 17:54:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-11-13 17:54:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-11-13 17:54:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2021-11-13 17:54:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2021-11-13 17:54:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:54:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:54:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:54:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 17:54:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 17:54:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:54:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:54:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2021-11-13 17:54:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2021-11-13 17:54:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:54:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2021-11-13 17:54:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2021-11-13 17:54:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:54:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 17:54:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 17:54:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-13 17:54:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-13 17:54:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 17:54:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 17:54:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2021-11-13 17:54:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2021-11-13 17:54:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 17:54:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 17:54:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2021-11-13 17:54:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2021-11-13 17:54:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-13 17:54:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-13 17:54:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2021-11-13 17:54:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2021-11-13 17:54:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2021-11-13 17:54:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2021-11-13 17:54:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:54:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:54:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2021-11-13 17:54:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2021-11-13 17:54:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:54:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 17:54:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 17:54:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 17:54:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 17:54:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 17:54:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 17:54:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:54:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:54:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2021-11-13 17:54:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2021-11-13 17:54:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2021-11-13 17:54:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2021-11-13 17:54:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:54:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:54:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:54:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 17:54:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 17:54:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-13 17:54:08,228 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-13 17:54:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:54:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:54:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2021-11-13 17:54:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2021-11-13 17:54:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2021-11-13 17:54:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2021-11-13 17:54:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 17:54:08,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 17:54:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2021-11-13 17:54:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2021-11-13 17:54:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-13 17:54:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-13 17:54:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-11-13 17:54:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-11-13 17:54:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:54:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 17:54:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 17:54:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 17:54:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 17:54:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 17:54:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 17:54:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:54:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2021-11-13 17:54:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2021-11-13 17:54:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:54:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:54:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-11-13 17:54:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-11-13 17:54:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:54:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:54:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:54:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:54:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2021-11-13 17:54:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2021-11-13 17:54:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:54:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:54:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2021-11-13 17:54:08,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2021-11-13 17:54:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-13 17:54:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-13 17:54:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:54:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2021-11-13 17:54:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2021-11-13 17:54:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 17:54:08,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 17:54:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-13 17:54:08,250 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-13 17:54:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-13 17:54:08,250 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-13 17:54:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:54:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:54:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-13 17:54:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-13 17:54:10,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:54:22,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:54:22,511 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:54:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:54:22 BoogieIcfgContainer [2021-11-13 17:54:22,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:54:22,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:54:22,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:54:22,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:54:22,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:54:02" (1/3) ... [2021-11-13 17:54:22,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e521a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:54:22, skipping insertion in model container [2021-11-13 17:54:22,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:54:07" (2/3) ... [2021-11-13 17:54:22,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e521a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:54:22, skipping insertion in model container [2021-11-13 17:54:22,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:54:22" (3/3) ... [2021-11-13 17:54:22,530 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 17:54:22,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:54:22,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:54:22,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:54:22,634 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 [2021-11-13 17:54:22,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:54:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) [2021-11-13 17:54:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 17:54:22,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:22,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:54:22,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:54:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2114030879, now seen corresponding path program 1 times [2021-11-13 17:54:22,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:54:22,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624192097] [2021-11-13 17:54:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:22,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:54:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:54:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:54:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:54:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:54:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:54:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-13 17:54:24,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:54:24,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624192097] [2021-11-13 17:54:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624192097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:24,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:24,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:54:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043341381] [2021-11-13 17:54:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:24,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:54:24,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:54:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:54:24,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:54:24,369 INFO L87 Difference]: Start difference. First operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:54:26,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:28,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:30,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:35,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:38,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:43,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:44,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:45,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:51,896 INFO L93 Difference]: Finished difference Result 3793 states and 5763 transitions. [2021-11-13 17:54:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:54:51,901 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2021-11-13 17:54:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:51,973 INFO L225 Difference]: With dead ends: 3793 [2021-11-13 17:54:51,974 INFO L226 Difference]: Without dead ends: 1987 [2021-11-13 17:54:52,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:52,019 INFO L933 BasicCegarLoop]: 2368 mSDtfsCounter, 1193 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 1518 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24878.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 4392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.26ms SdHoareTripleChecker+Time, 1518 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26763.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:52,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 4643 Invalid, 4392 Unknown, 0 Unchecked, 130.26ms Time], IncrementalHoareTripleChecker [1518 Valid, 2868 Invalid, 6 Unknown, 0 Unchecked, 26763.76ms Time] [2021-11-13 17:54:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-13 17:54:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1777. [2021-11-13 17:54:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1145 states have (on average 1.3161572052401747) internal successors, (1507), 1185 states have internal predecessors, (1507), 557 states have call successors, (557), 75 states have call predecessors, (557), 74 states have return successors, (556), 541 states have call predecessors, (556), 556 states have call successors, (556) [2021-11-13 17:54:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2620 transitions. [2021-11-13 17:54:52,492 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2620 transitions. Word has length 92 [2021-11-13 17:54:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2620 transitions. [2021-11-13 17:54:52,494 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:54:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2620 transitions. [2021-11-13 17:54:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 17:54:52,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:52,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:54:52,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:54:52,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:54:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -645505755, now seen corresponding path program 1 times [2021-11-13 17:54:52,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:54:52,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607883526] [2021-11-13 17:54:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:54:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:54:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:54:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:54:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:53,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:54:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:53,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:54:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-13 17:54:53,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:54:53,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607883526] [2021-11-13 17:54:53,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607883526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:54:53,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:54:53,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:54:53,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035023106] [2021-11-13 17:54:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:54:53,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:54:53,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:54:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:54:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:54:53,131 INFO L87 Difference]: Start difference. First operand 1777 states and 2620 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, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:54:55,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:57,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:04,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:11,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:12,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:19,594 INFO L93 Difference]: Finished difference Result 5629 states and 8535 transitions. [2021-11-13 17:55:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:19,595 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, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 92 [2021-11-13 17:55:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:19,671 INFO L225 Difference]: With dead ends: 5629 [2021-11-13 17:55:19,671 INFO L226 Difference]: Without dead ends: 3870 [2021-11-13 17:55:19,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:55:19,708 INFO L933 BasicCegarLoop]: 3060 mSDtfsCounter, 4265 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 3207 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23285.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 7082 SdHoareTripleChecker+Invalid, 7059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 136.50ms SdHoareTripleChecker+Time, 3207 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25618.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:19,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 7082 Invalid, 7059 Unknown, 0 Unchecked, 136.50ms Time], IncrementalHoareTripleChecker [3207 Valid, 3849 Invalid, 3 Unknown, 0 Unchecked, 25618.00ms Time] [2021-11-13 17:55:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-11-13 17:55:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3449. [2021-11-13 17:55:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2214 states have (on average 1.3175248419150858) internal successors, (2917), 2292 states have internal predecessors, (2917), 1087 states have call successors, (1087), 148 states have call predecessors, (1087), 147 states have return successors, (1086), 1056 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-11-13 17:55:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5090 transitions. [2021-11-13 17:55:20,072 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5090 transitions. Word has length 92 [2021-11-13 17:55:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:20,073 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 5090 transitions. [2021-11-13 17:55:20,074 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, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:55:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5090 transitions. [2021-11-13 17:55:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 17:55:20,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:20,084 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 17:55:20,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:55:20,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:55:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash -600008244, now seen corresponding path program 1 times [2021-11-13 17:55:20,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:55:20,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766256274] [2021-11-13 17:55:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:20,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:55:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:55:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:55:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:55:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:55:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:55:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 17:55:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:55:21,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:55:21,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766256274] [2021-11-13 17:55:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766256274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:21,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:21,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:55:21,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948859616] [2021-11-13 17:55:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:21,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:55:21,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:55:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:55:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:55:21,042 INFO L87 Difference]: Start difference. First operand 3449 states and 5090 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:55:23,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:27,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:55:37,514 INFO L93 Difference]: Finished difference Result 6414 states and 9853 transitions. [2021-11-13 17:55:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:55:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2021-11-13 17:55:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:55:37,633 INFO L225 Difference]: With dead ends: 6414 [2021-11-13 17:55:37,633 INFO L226 Difference]: Without dead ends: 6411 [2021-11-13 17:55:37,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:55:37,643 INFO L933 BasicCegarLoop]: 3458 mSDtfsCounter, 4111 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 3483 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14217.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 6063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.82ms SdHoareTripleChecker+Time, 3483 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15873.11ms IncrementalHoareTripleChecker+Time [2021-11-13 17:55:37,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4351 Valid, 6237 Invalid, 6063 Unknown, 0 Unchecked, 74.82ms Time], IncrementalHoareTripleChecker [3483 Valid, 2578 Invalid, 2 Unknown, 0 Unchecked, 15873.11ms Time] [2021-11-13 17:55:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-11-13 17:55:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5756. [2021-11-13 17:55:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 3679 states have (on average 1.3101386246262572) internal successors, (4820), 3821 states have internal predecessors, (4820), 1815 states have call successors, (1815), 258 states have call predecessors, (1815), 261 states have return successors, (1901), 1758 states have call predecessors, (1901), 1814 states have call successors, (1901) [2021-11-13 17:55:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 8536 transitions. [2021-11-13 17:55:38,201 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 8536 transitions. Word has length 122 [2021-11-13 17:55:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:55:38,204 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 8536 transitions. [2021-11-13 17:55:38,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:55:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 8536 transitions. [2021-11-13 17:55:38,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 17:55:38,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:55:38,244 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-11-13 17:55:38,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:55:38,245 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:55:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:55:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -377035489, now seen corresponding path program 1 times [2021-11-13 17:55:38,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:55:38,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718892327] [2021-11-13 17:55:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:55:38,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:55:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:55:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:55:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:55:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:55:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:55:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:55:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 17:55:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 17:55:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 17:55:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 17:55:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:55:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:55:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 17:55:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 17:55:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 17:55:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:55:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:55:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:55:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:55:39,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:55:39,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718892327] [2021-11-13 17:55:39,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718892327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:55:39,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:55:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:55:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026491730] [2021-11-13 17:55:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:55:39,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:55:39,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:55:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:55:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:55:39,259 INFO L87 Difference]: Start difference. First operand 5756 states and 8536 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:55:41,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:43,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:49,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:54,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:55:56,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:08,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:10,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:17,390 INFO L93 Difference]: Finished difference Result 18798 states and 28686 transitions. [2021-11-13 17:56:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:56:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2021-11-13 17:56:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:17,588 INFO L225 Difference]: With dead ends: 18798 [2021-11-13 17:56:17,588 INFO L226 Difference]: Without dead ends: 13074 [2021-11-13 17:56:17,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:56:17,680 INFO L933 BasicCegarLoop]: 2310 mSDtfsCounter, 6171 mSDsluCounter, 7108 mSDsCounter, 0 mSdLazyCounter, 9454 mSolverCounterSat, 6087 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33386.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 9418 SdHoareTripleChecker+Invalid, 15545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 161.25ms SdHoareTripleChecker+Time, 6087 IncrementalHoareTripleChecker+Valid, 9454 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36623.56ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:17,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6627 Valid, 9418 Invalid, 15545 Unknown, 0 Unchecked, 161.25ms Time], IncrementalHoareTripleChecker [6087 Valid, 9454 Invalid, 4 Unknown, 0 Unchecked, 36623.56ms Time] [2021-11-13 17:56:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2021-11-13 17:56:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 11991. [2021-11-13 17:56:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11991 states, 7661 states have (on average 1.3042683722751598) internal successors, (9992), 7945 states have internal predecessors, (9992), 3777 states have call successors, (3777), 513 states have call predecessors, (3777), 552 states have return successors, (4166), 3700 states have call predecessors, (4166), 3776 states have call successors, (4166) [2021-11-13 17:56:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 17935 transitions. [2021-11-13 17:56:19,088 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 17935 transitions. Word has length 178 [2021-11-13 17:56:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:19,089 INFO L470 AbstractCegarLoop]: Abstraction has 11991 states and 17935 transitions. [2021-11-13 17:56:19,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:56:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 17935 transitions. [2021-11-13 17:56:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 17:56:19,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:19,122 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1] [2021-11-13 17:56:19,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:56:19,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:56:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 706437634, now seen corresponding path program 1 times [2021-11-13 17:56:19,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:56:19,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433085915] [2021-11-13 17:56:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:19,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:56:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:56:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:56:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:56:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:56:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:56:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:56:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:56:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:56:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 17:56:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:56:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 17:56:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 17:56:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:56:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 17:56:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 17:56:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-13 17:56:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 17:56:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:56:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:56:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:56:19,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:56:19,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433085915] [2021-11-13 17:56:19,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433085915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:56:19,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:56:19,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:56:19,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499145036] [2021-11-13 17:56:19,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:56:19,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:56:19,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:56:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:56:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:56:19,888 INFO L87 Difference]: Start difference. First operand 11991 states and 17935 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:56:21,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:24,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:26,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:28,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:36,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:39,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:47,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:49,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:56:50,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:05,280 INFO L93 Difference]: Finished difference Result 38047 states and 58243 transitions. [2021-11-13 17:57:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:57:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 177 [2021-11-13 17:57:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:05,613 INFO L225 Difference]: With dead ends: 38047 [2021-11-13 17:57:05,613 INFO L226 Difference]: Without dead ends: 26088 [2021-11-13 17:57:05,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:57:05,753 INFO L933 BasicCegarLoop]: 2458 mSDtfsCounter, 6103 mSDsluCounter, 8081 mSDsCounter, 0 mSdLazyCounter, 11140 mSolverCounterSat, 5931 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39747.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 10539 SdHoareTripleChecker+Invalid, 17078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.26ms SdHoareTripleChecker+Time, 5931 IncrementalHoareTripleChecker+Valid, 11140 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43406.53ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:05,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 10539 Invalid, 17078 Unknown, 0 Unchecked, 167.26ms Time], IncrementalHoareTripleChecker [5931 Valid, 11140 Invalid, 7 Unknown, 0 Unchecked, 43406.53ms Time] [2021-11-13 17:57:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26088 states. [2021-11-13 17:57:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26088 to 23903. [2021-11-13 17:57:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23903 states, 15257 states have (on average 1.3030084551353478) internal successors, (19880), 15839 states have internal predecessors, (19880), 7543 states have call successors, (7543), 1023 states have call predecessors, (7543), 1102 states have return successors, (8388), 7376 states have call predecessors, (8388), 7542 states have call successors, (8388) [2021-11-13 17:57:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23903 states to 23903 states and 35811 transitions. [2021-11-13 17:57:08,396 INFO L78 Accepts]: Start accepts. Automaton has 23903 states and 35811 transitions. Word has length 177 [2021-11-13 17:57:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:57:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 23903 states and 35811 transitions. [2021-11-13 17:57:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:57:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23903 states and 35811 transitions. [2021-11-13 17:57:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 17:57:08,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:57:08,461 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-11-13 17:57:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:57:08,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:57:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:57:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1998761348, now seen corresponding path program 1 times [2021-11-13 17:57:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:57:08,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992440504] [2021-11-13 17:57:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:57:08,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:57:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:57:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:57:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:57:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:57:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:57:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:57:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:57:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:57:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:57:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:57:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:57:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 17:57:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:57:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-13 17:57:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-13 17:57:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 17:57:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:57:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:57:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:57:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:57:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:57:09,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:57:09,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992440504] [2021-11-13 17:57:09,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992440504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:57:09,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:57:09,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:57:09,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499163990] [2021-11-13 17:57:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:57:09,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:57:09,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:57:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:57:09,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:57:09,726 INFO L87 Difference]: Start difference. First operand 23903 states and 35811 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:57:11,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:13,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:16,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:21,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:23,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:25,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:32,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:33,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:35,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:57:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:57:54,587 INFO L93 Difference]: Finished difference Result 75987 states and 116351 transitions. [2021-11-13 17:57:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:57:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2021-11-13 17:57:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:57:55,478 INFO L225 Difference]: With dead ends: 75987 [2021-11-13 17:57:55,479 INFO L226 Difference]: Without dead ends: 52116 [2021-11-13 17:57:55,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:57:55,933 INFO L933 BasicCegarLoop]: 2271 mSDtfsCounter, 6216 mSDsluCounter, 7568 mSDsCounter, 0 mSdLazyCounter, 10834 mSolverCounterSat, 6146 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37606.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 9839 SdHoareTripleChecker+Invalid, 16985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 157.14ms SdHoareTripleChecker+Time, 6146 IncrementalHoareTripleChecker+Valid, 10834 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41271.16ms IncrementalHoareTripleChecker+Time [2021-11-13 17:57:55,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6675 Valid, 9839 Invalid, 16985 Unknown, 0 Unchecked, 157.14ms Time], IncrementalHoareTripleChecker [6146 Valid, 10834 Invalid, 5 Unknown, 0 Unchecked, 41271.16ms Time] [2021-11-13 17:57:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52116 states. [2021-11-13 17:58:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52116 to 47787. [2021-11-13 17:58:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47787 states, 30509 states have (on average 1.3023042380936773) internal successors, (39732), 31669 states have internal predecessors, (39732), 15073 states have call successors, (15073), 2045 states have call predecessors, (15073), 2204 states have return successors, (16866), 14744 states have call predecessors, (16866), 15072 states have call successors, (16866) [2021-11-13 17:58:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47787 states to 47787 states and 71671 transitions. [2021-11-13 17:58:02,084 INFO L78 Accepts]: Start accepts. Automaton has 47787 states and 71671 transitions. Word has length 180 [2021-11-13 17:58:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:58:02,085 INFO L470 AbstractCegarLoop]: Abstraction has 47787 states and 71671 transitions. [2021-11-13 17:58:02,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:58:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 47787 states and 71671 transitions. [2021-11-13 17:58:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-13 17:58:02,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:58:02,135 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-11-13 17:58:02,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:58:02,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:58:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:58:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash -272632065, now seen corresponding path program 1 times [2021-11-13 17:58:02,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:58:02,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214544836] [2021-11-13 17:58:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:58:02,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:58:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:58:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:58:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:58:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:58:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:58:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:58:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:58:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:58:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:58:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:58:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 17:58:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:58:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 17:58:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 17:58:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:58:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 17:58:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-13 17:58:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:58:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:58:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:58:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:58:03,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:58:03,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214544836] [2021-11-13 17:58:03,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214544836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:58:03,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:58:03,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:58:03,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988734400] [2021-11-13 17:58:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:58:03,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:58:03,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:58:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:58:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:58:03,195 INFO L87 Difference]: Start difference. First operand 47787 states and 71671 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:58:05,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:07,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:09,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:11,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:18,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:20,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:27,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:30,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:58:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:58:52,763 INFO L93 Difference]: Finished difference Result 151119 states and 231545 transitions. [2021-11-13 17:58:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:58:52,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 179 [2021-11-13 17:58:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:58:54,104 INFO L225 Difference]: With dead ends: 151119 [2021-11-13 17:58:54,104 INFO L226 Difference]: Without dead ends: 103364 [2021-11-13 17:58:54,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:58:54,775 INFO L933 BasicCegarLoop]: 2281 mSDtfsCounter, 6207 mSDsluCounter, 7603 mSDsCounter, 0 mSdLazyCounter, 10847 mSolverCounterSat, 6149 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39138.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6661 SdHoareTripleChecker+Valid, 9884 SdHoareTripleChecker+Invalid, 17003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 164.07ms SdHoareTripleChecker+Time, 6149 IncrementalHoareTripleChecker+Valid, 10847 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42999.35ms IncrementalHoareTripleChecker+Time [2021-11-13 17:58:54,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6661 Valid, 9884 Invalid, 17003 Unknown, 0 Unchecked, 164.07ms Time], IncrementalHoareTripleChecker [6149 Valid, 10847 Invalid, 7 Unknown, 0 Unchecked, 42999.35ms Time] [2021-11-13 17:58:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103364 states. [2021-11-13 17:59:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103364 to 94859. [2021-11-13 17:59:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94859 states, 60509 states have (on average 1.3008973871655456) internal successors, (78716), 62805 states have internal predecessors, (78716), 29961 states have call successors, (29961), 4069 states have call predecessors, (29961), 4388 states have return successors, (33712), 29314 states have call predecessors, (33712), 29960 states have call successors, (33712) [2021-11-13 17:59:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94859 states to 94859 states and 142389 transitions. [2021-11-13 17:59:03,764 INFO L78 Accepts]: Start accepts. Automaton has 94859 states and 142389 transitions. Word has length 179 [2021-11-13 17:59:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:59:03,764 INFO L470 AbstractCegarLoop]: Abstraction has 94859 states and 142389 transitions. [2021-11-13 17:59:03,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 17:59:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 94859 states and 142389 transitions. [2021-11-13 17:59:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 17:59:03,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:59:03,832 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-11-13 17:59:03,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:59:03,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:59:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:59:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1107819808, now seen corresponding path program 1 times [2021-11-13 17:59:03,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:59:03,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481685876] [2021-11-13 17:59:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:59:03,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:59:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:59:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:59:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:59:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:59:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:59:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 17:59:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:59:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 17:59:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:59:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-13 17:59:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 17:59:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-13 17:59:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 17:59:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:59:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-13 17:59:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:59:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 17:59:04,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:59:04,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481685876] [2021-11-13 17:59:04,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481685876] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:59:04,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519969509] [2021-11-13 17:59:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:59:04,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:59:04,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:59:04,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:59:04,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:59:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:06,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:59:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:59:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:59:07,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:59:07,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519969509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:59:07,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:59:07,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-13 17:59:07,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304235822] [2021-11-13 17:59:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:59:07,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:59:07,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:59:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:59:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:59:07,419 INFO L87 Difference]: Start difference. First operand 94859 states and 142389 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:59:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:59:16,613 INFO L93 Difference]: Finished difference Result 237149 states and 356253 transitions. [2021-11-13 17:59:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:59:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2021-11-13 17:59:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:59:17,927 INFO L225 Difference]: With dead ends: 237149 [2021-11-13 17:59:17,927 INFO L226 Difference]: Without dead ends: 142322 [2021-11-13 17:59:19,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:59:19,138 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 2645 mSDsluCounter, 17163 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 20804 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:59:19,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 20804 Invalid, 76 Unknown, 0 Unchecked, 44.36ms Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 204.44ms Time] [2021-11-13 17:59:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142322 states. [2021-11-13 17:59:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142322 to 142027. [2021-11-13 17:59:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142027 states, 90605 states have (on average 1.3014072071077756) internal successors, (117914), 94061 states have internal predecessors, (117914), 44841 states have call successors, (44841), 6085 states have call predecessors, (44841), 6580 states have return successors, (50800), 43868 states have call predecessors, (50800), 44840 states have call successors, (50800) [2021-11-13 17:59:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142027 states to 142027 states and 213555 transitions. [2021-11-13 17:59:30,006 INFO L78 Accepts]: Start accepts. Automaton has 142027 states and 213555 transitions. Word has length 190 [2021-11-13 17:59:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:59:30,007 INFO L470 AbstractCegarLoop]: Abstraction has 142027 states and 213555 transitions. [2021-11-13 17:59:30,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:59:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 142027 states and 213555 transitions. [2021-11-13 17:59:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 17:59:30,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:59:30,068 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-11-13 17:59:30,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:59:30,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 17:59:30,284 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:59:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:59:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1156044162, now seen corresponding path program 1 times [2021-11-13 17:59:30,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:59:30,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76645728] [2021-11-13 17:59:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:59:30,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:59:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:59:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:59:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:59:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:59:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:59:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:59:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:59:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:59:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 17:59:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:59:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 17:59:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:59:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 17:59:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 17:59:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 17:59:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:59:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:59:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:59:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:59:31,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:59:31,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76645728] [2021-11-13 17:59:31,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76645728] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:59:31,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118234319] [2021-11-13 17:59:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:59:31,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:59:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:59:31,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:59:31,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8207d1b9-167f-43b3-8b69-990432c18e19/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:59:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:59:32,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:59:32,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:59:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:59:33,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:59:33,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118234319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:59:33,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:59:33,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-13 17:59:33,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504784986] [2021-11-13 17:59:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:59:33,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:59:33,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:59:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:59:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:59:33,118 INFO L87 Difference]: Start difference. First operand 142027 states and 213555 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21)