./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:27:10,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:27:10,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:27:10,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:27:10,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:27:10,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:27:10,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:27:10,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:27:10,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:27:10,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:27:10,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:27:10,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:27:10,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:27:10,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:27:10,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:27:10,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:27:10,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:27:10,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:27:10,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:27:10,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:27:10,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:27:10,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:27:10,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:27:10,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:27:10,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:27:10,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:27:10,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:27:10,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:27:10,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:27:10,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:27:10,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:27:10,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:27:10,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:27:10,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:27:10,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:27:10,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:27:10,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:27:10,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:27:10,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:27:10,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:27:10,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:27:10,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:27:10,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:27:10,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:27:10,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:27:10,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:27:10,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:27:10,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:27:10,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:27:10,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:27:10,185 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:27:10,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:27:10,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:27:10,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:27:10,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:27:10,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:27:10,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:27:10,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:27:10,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:10,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:27:10,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:27:10,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:27:10,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:27:10,188 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-12-14 17:27:10,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:27:10,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:27:10,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:27:10,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:27:10,385 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:27:10,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-14 17:27:10,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2d18856/0d72a682f713463d9209820382f671e9/FLAGac19d6267 [2021-12-14 17:27:11,082 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:27:11,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-14 17:27:11,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2d18856/0d72a682f713463d9209820382f671e9/FLAGac19d6267 [2021-12-14 17:27:11,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2d18856/0d72a682f713463d9209820382f671e9 [2021-12-14 17:27:11,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:27:11,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:27:11,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:11,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:27:11,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:27:11,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:11" (1/1) ... [2021-12-14 17:27:11,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d84b076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:11, skipping insertion in model container [2021-12-14 17:27:11,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:11" (1/1) ... [2021-12-14 17:27:11,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:27:11,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:27:13,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-12-14 17:27:13,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:13,755 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:27:14,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-12-14 17:27:14,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:14,207 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:27:14,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14 WrapperNode [2021-12-14 17:27:14,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:14,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:14,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:27:14,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:27:14,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,469 INFO L137 Inliner]: procedures = 445, calls = 3482, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7782 [2021-12-14 17:27:14,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:14,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:27:14,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:27:14,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:27:14,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:27:14,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:27:14,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:27:14,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:27:14,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:14,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:27:14,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:27:14,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:27:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-14 17:27:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-14 17:27:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-14 17:27:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-14 17:27:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-14 17:27:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-14 17:27:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:27:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:27:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-14 17:27:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-12-14 17:27:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-12-14 17:27:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:27:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:27:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-12-14 17:27:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-12-14 17:27:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-14 17:27:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-14 17:27:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-12-14 17:27:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-12-14 17:27:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-14 17:27:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-14 17:27:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-14 17:27:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-14 17:27:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2021-12-14 17:27:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2021-12-14 17:27:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:27:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:27:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-14 17:27:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-14 17:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-14 17:27:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-14 17:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:27:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:27:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-14 17:27:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-14 17:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-14 17:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:27:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:27:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-12-14 17:27:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-12-14 17:27:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:27:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:27:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-14 17:27:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-14 17:27:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-14 17:27:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-14 17:27:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-14 17:27:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-14 17:27:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 17:27:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 17:27:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-12-14 17:27:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-12-14 17:27:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-12-14 17:27:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-14 17:27:14,795 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:27:14,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:27:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:27:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:27:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-14 17:27:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-14 17:27:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-14 17:27:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-14 17:27:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:27:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:27:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-14 17:27:14,796 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-14 17:27:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-12-14 17:27:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-12-14 17:27:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-14 17:27:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-14 17:27:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-14 17:27:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-14 17:27:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-14 17:27:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-14 17:27:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:27:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:27:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-12-14 17:27:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-12-14 17:27:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-12-14 17:27:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-12-14 17:27:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-12-14 17:27:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-12-14 17:27:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 17:27:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 17:27:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:27:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:27:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-12-14 17:27:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-12-14 17:27:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-14 17:27:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-14 17:27:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:27:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:27:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-14 17:27:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-14 17:27:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:27:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-14 17:27:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-14 17:27:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:27:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-14 17:27:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-14 17:27:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:27:14,801 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:27:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-14 17:27:14,801 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-14 17:27:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-12-14 17:27:14,801 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-12-14 17:27:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-14 17:27:14,801 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-14 17:27:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:27:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:27:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:27:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:27:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:27:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:27:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-14 17:27:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-14 17:27:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:27:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:27:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-14 17:27:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-14 17:27:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-14 17:27:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-14 17:27:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:27:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:27:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:27:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-14 17:27:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-14 17:27:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:27:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-12-14 17:27:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-12-14 17:27:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-12-14 17:27:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-12-14 17:27:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-12-14 17:27:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-12-14 17:27:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-12-14 17:27:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-12-14 17:27:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:27:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-14 17:27:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-14 17:27:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:27:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:27:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-12-14 17:27:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-12-14 17:27:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:27:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:27:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:27:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:27:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-12-14 17:27:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-12-14 17:27:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:27:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:27:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-12-14 17:27:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-12-14 17:27:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-12-14 17:27:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-12-14 17:27:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-12-14 17:27:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-12-14 17:27:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 17:27:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 17:27:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-14 17:27:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-14 17:27:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-12-14 17:27:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-12-14 17:27:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-12-14 17:27:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-12-14 17:27:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-14 17:27:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-14 17:27:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:27:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:27:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:27:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-14 17:27:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-14 17:27:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-12-14 17:27:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-12-14 17:27:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-14 17:27:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-14 17:27:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:27:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:27:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:27:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:27:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-12-14 17:27:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-12-14 17:27:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-14 17:27:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-14 17:27:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-14 17:27:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-14 17:27:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 17:27:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 17:27:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-12-14 17:27:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-12-14 17:27:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-14 17:27:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-14 17:27:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-12-14 17:27:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-12-14 17:27:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-14 17:27:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-14 17:27:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-14 17:27:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-14 17:27:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-14 17:27:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-14 17:27:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-14 17:27:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-14 17:27:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-12-14 17:27:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-12-14 17:27:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:27:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:27:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 17:27:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 17:27:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-14 17:27:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-14 17:27:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-12-14 17:27:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-12-14 17:27:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-14 17:27:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-14 17:27:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2021-12-14 17:27:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2021-12-14 17:27:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-14 17:27:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-14 17:27:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:27:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-12-14 17:27:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-12-14 17:27:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2021-12-14 17:27:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2021-12-14 17:27:15,612 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:27:15,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4 == ~size; [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:19,793 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16 == ~size; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret209 && #t~ret209 <= 9223372036854775807;~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := (if ~tmp___2~3 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~3 % 18446744073709551616 % 4294967296 else ~tmp___2~3 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2 == ~size; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8 == ~size; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret210 && #t~ret210 <= 9223372036854775807;~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-12-14 17:27:19,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10 == ~size; [2021-12-14 17:27:23,622 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:27:23,638 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:27:23,638 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:27:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:23 BoogieIcfgContainer [2021-12-14 17:27:23,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:27:23,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:27:23,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:27:23,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:27:23,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:27:11" (1/3) ... [2021-12-14 17:27:23,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a0036b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:23, skipping insertion in model container [2021-12-14 17:27:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14" (2/3) ... [2021-12-14 17:27:23,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a0036b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:23, skipping insertion in model container [2021-12-14 17:27:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:23" (3/3) ... [2021-12-14 17:27:23,653 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-12-14 17:27:23,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:27:23,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:27:23,691 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:27:23,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:27:23,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:27:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 2443 states, 1685 states have (on average 1.3465875370919882) internal successors, (2269), 1735 states have internal predecessors, (2269), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-14 17:27:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 17:27:23,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:23,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:23,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1306392421, now seen corresponding path program 1 times [2021-12-14 17:27:23,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:23,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004703850] [2021-12-14 17:27:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:23,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:24,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004703850] [2021-12-14 17:27:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004703850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:24,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:24,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:24,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590819878] [2021-12-14 17:27:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:24,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:24,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:24,114 INFO L87 Difference]: Start difference. First operand has 2443 states, 1685 states have (on average 1.3465875370919882) internal successors, (2269), 1735 states have internal predecessors, (2269), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:24,330 INFO L93 Difference]: Finished difference Result 4865 states and 7178 transitions. [2021-12-14 17:27:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-14 17:27:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:24,352 INFO L225 Difference]: With dead ends: 4865 [2021-12-14 17:27:24,353 INFO L226 Difference]: Without dead ends: 2427 [2021-12-14 17:27:24,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:24,368 INFO L933 BasicCegarLoop]: 3535 mSDtfsCounter, 3526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3526 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:24,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3526 Valid, 3535 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-12-14 17:27:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2427. [2021-12-14 17:27:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1672 states have (on average 1.3415071770334928) internal successors, (2243), 1719 states have internal predecessors, (2243), 641 states have call successors, (641), 114 states have call predecessors, (641), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-14 17:27:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3514 transitions. [2021-12-14 17:27:24,540 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3514 transitions. Word has length 15 [2021-12-14 17:27:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:24,541 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3514 transitions. [2021-12-14 17:27:24,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3514 transitions. [2021-12-14 17:27:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:27:24,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:24,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:24,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:27:24,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1844610202, now seen corresponding path program 1 times [2021-12-14 17:27:24,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:24,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414024253] [2021-12-14 17:27:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:24,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:24,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414024253] [2021-12-14 17:27:24,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414024253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:24,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:24,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:24,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128336306] [2021-12-14 17:27:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:24,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:24,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:24,674 INFO L87 Difference]: Start difference. First operand 2427 states and 3514 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:24,834 INFO L93 Difference]: Finished difference Result 2429 states and 3515 transitions. [2021-12-14 17:27:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-14 17:27:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:24,845 INFO L225 Difference]: With dead ends: 2429 [2021-12-14 17:27:24,845 INFO L226 Difference]: Without dead ends: 2426 [2021-12-14 17:27:24,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:24,852 INFO L933 BasicCegarLoop]: 3511 mSDtfsCounter, 3501 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:24,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 3511 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-12-14 17:27:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2426. [2021-12-14 17:27:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1672 states have (on average 1.3409090909090908) internal successors, (2242), 1718 states have internal predecessors, (2242), 640 states have call successors, (640), 114 states have call predecessors, (640), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-14 17:27:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3512 transitions. [2021-12-14 17:27:24,953 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3512 transitions. Word has length 16 [2021-12-14 17:27:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:24,954 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3512 transitions. [2021-12-14 17:27:24,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3512 transitions. [2021-12-14 17:27:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 17:27:24,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:24,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:27:24,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1349487362, now seen corresponding path program 1 times [2021-12-14 17:27:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354281220] [2021-12-14 17:27:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:24,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:25,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:25,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354281220] [2021-12-14 17:27:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354281220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:25,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:25,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784142331] [2021-12-14 17:27:25,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:25,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:25,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,075 INFO L87 Difference]: Start difference. First operand 2426 states and 3512 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:25,174 INFO L93 Difference]: Finished difference Result 2428 states and 3513 transitions. [2021-12-14 17:27:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:25,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-14 17:27:25,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:25,186 INFO L225 Difference]: With dead ends: 2428 [2021-12-14 17:27:25,186 INFO L226 Difference]: Without dead ends: 2425 [2021-12-14 17:27:25,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,188 INFO L933 BasicCegarLoop]: 3509 mSDtfsCounter, 3498 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:25,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 3509 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-12-14 17:27:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2021-12-14 17:27:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1672 states have (on average 1.340311004784689) internal successors, (2241), 1717 states have internal predecessors, (2241), 639 states have call successors, (639), 114 states have call predecessors, (639), 113 states have return successors, (630), 618 states have call predecessors, (630), 630 states have call successors, (630) [2021-12-14 17:27:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3510 transitions. [2021-12-14 17:27:25,283 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3510 transitions. Word has length 17 [2021-12-14 17:27:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:25,283 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 3510 transitions. [2021-12-14 17:27:25,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3510 transitions. [2021-12-14 17:27:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:27:25,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:25,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:25,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:27:25,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1114423657, now seen corresponding path program 1 times [2021-12-14 17:27:25,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:25,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978246243] [2021-12-14 17:27:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:25,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:25,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:25,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978246243] [2021-12-14 17:27:25,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978246243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:25,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:25,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:25,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622206639] [2021-12-14 17:27:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:25,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:25,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,417 INFO L87 Difference]: Start difference. First operand 2425 states and 3510 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:25,587 INFO L93 Difference]: Finished difference Result 5710 states and 8140 transitions. [2021-12-14 17:27:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-14 17:27:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:25,603 INFO L225 Difference]: With dead ends: 5710 [2021-12-14 17:27:25,603 INFO L226 Difference]: Without dead ends: 3324 [2021-12-14 17:27:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,612 INFO L933 BasicCegarLoop]: 3814 mSDtfsCounter, 1903 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 6570 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 6570 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2021-12-14 17:27:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3317. [2021-12-14 17:27:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 2281 states have (on average 1.3160894344585707) internal successors, (3002), 2348 states have internal predecessors, (3002), 838 states have call successors, (838), 200 states have call predecessors, (838), 197 states have return successors, (832), 806 states have call predecessors, (832), 826 states have call successors, (832) [2021-12-14 17:27:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4672 transitions. [2021-12-14 17:27:25,779 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4672 transitions. Word has length 18 [2021-12-14 17:27:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:25,780 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 4672 transitions. [2021-12-14 17:27:25,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4672 transitions. [2021-12-14 17:27:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:27:25,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:25,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:27:25,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 186258785, now seen corresponding path program 1 times [2021-12-14 17:27:25,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446243018] [2021-12-14 17:27:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:25,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:25,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446243018] [2021-12-14 17:27:25,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446243018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:25,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:25,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:25,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219674803] [2021-12-14 17:27:25,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:25,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:25,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,875 INFO L87 Difference]: Start difference. First operand 3317 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:25,994 INFO L93 Difference]: Finished difference Result 3352 states and 4699 transitions. [2021-12-14 17:27:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:25,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-14 17:27:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:26,007 INFO L225 Difference]: With dead ends: 3352 [2021-12-14 17:27:26,007 INFO L226 Difference]: Without dead ends: 3348 [2021-12-14 17:27:26,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,010 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 3424 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:26,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3424 Valid, 3588 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-12-14 17:27:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3344. [2021-12-14 17:27:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2302 states have (on average 1.312771503040834) internal successors, (3022), 2367 states have internal predecessors, (3022), 836 states have call successors, (836), 208 states have call predecessors, (836), 205 states have return successors, (832), 806 states have call predecessors, (832), 826 states have call successors, (832) [2021-12-14 17:27:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4690 transitions. [2021-12-14 17:27:26,119 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4690 transitions. Word has length 19 [2021-12-14 17:27:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:26,120 INFO L470 AbstractCegarLoop]: Abstraction has 3344 states and 4690 transitions. [2021-12-14 17:27:26,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4690 transitions. [2021-12-14 17:27:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 17:27:26,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:26,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:26,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:27:26,121 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1477923692, now seen corresponding path program 1 times [2021-12-14 17:27:26,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:26,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743315613] [2021-12-14 17:27:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:26,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:26,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:26,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743315613] [2021-12-14 17:27:26,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743315613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:26,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:26,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:26,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364663445] [2021-12-14 17:27:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:26,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:26,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,224 INFO L87 Difference]: Start difference. First operand 3344 states and 4690 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:26,351 INFO L93 Difference]: Finished difference Result 3378 states and 4724 transitions. [2021-12-14 17:27:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-14 17:27:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:26,364 INFO L225 Difference]: With dead ends: 3378 [2021-12-14 17:27:26,364 INFO L226 Difference]: Without dead ends: 3354 [2021-12-14 17:27:26,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,366 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 3412 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:26,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3412 Valid, 3588 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-12-14 17:27:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3352. [2021-12-14 17:27:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 2310 states have (on average 1.3116883116883118) internal successors, (3030), 2373 states have internal predecessors, (3030), 830 states have call successors, (830), 214 states have call predecessors, (830), 211 states have return successors, (828), 802 states have call predecessors, (828), 822 states have call successors, (828) [2021-12-14 17:27:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 4688 transitions. [2021-12-14 17:27:26,491 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 4688 transitions. Word has length 20 [2021-12-14 17:27:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:26,491 INFO L470 AbstractCegarLoop]: Abstraction has 3352 states and 4688 transitions. [2021-12-14 17:27:26,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 4688 transitions. [2021-12-14 17:27:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 17:27:26,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:26,527 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:26,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:27:26,528 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1489572794, now seen corresponding path program 1 times [2021-12-14 17:27:26,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019918395] [2021-12-14 17:27:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:26,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:27:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:27:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:26,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019918395] [2021-12-14 17:27:26,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019918395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:26,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:26,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:27:26,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094741217] [2021-12-14 17:27:26,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:26,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:27:26,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:26,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:27:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:27:26,660 INFO L87 Difference]: Start difference. First operand 3352 states and 4688 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:27:29,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:31,150 INFO L93 Difference]: Finished difference Result 5209 states and 7206 transitions. [2021-12-14 17:27:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:27:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2021-12-14 17:27:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:31,166 INFO L225 Difference]: With dead ends: 5209 [2021-12-14 17:27:31,166 INFO L226 Difference]: Without dead ends: 2663 [2021-12-14 17:27:31,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:27:31,178 INFO L933 BasicCegarLoop]: 3025 mSDtfsCounter, 2335 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 899 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:31,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2702 Valid, 4919 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 1899 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-12-14 17:27:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-14 17:27:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2541. [2021-12-14 17:27:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.3011428571428572) internal successors, (2277), 1790 states have internal predecessors, (2277), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-14 17:27:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3514 transitions. [2021-12-14 17:27:31,267 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3514 transitions. Word has length 53 [2021-12-14 17:27:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:31,269 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3514 transitions. [2021-12-14 17:27:31,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:27:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3514 transitions. [2021-12-14 17:27:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 17:27:31,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:31,274 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:27:31,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:27:31,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1826413853, now seen corresponding path program 1 times [2021-12-14 17:27:31,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:31,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471843003] [2021-12-14 17:27:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:31,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:27:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:27:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:27:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:27:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:31,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471843003] [2021-12-14 17:27:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471843003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:27:31,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54850300] [2021-12-14 17:27:31,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:31,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:27:31,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:27:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:27:31,472 INFO L87 Difference]: Start difference. First operand 2541 states and 3514 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:33,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:35,878 INFO L93 Difference]: Finished difference Result 5191 states and 7218 transitions. [2021-12-14 17:27:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:27:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2021-12-14 17:27:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:35,891 INFO L225 Difference]: With dead ends: 5191 [2021-12-14 17:27:35,891 INFO L226 Difference]: Without dead ends: 2663 [2021-12-14 17:27:35,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:27:35,901 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 969 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 621 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:35,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 6416 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1555 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-12-14 17:27:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-14 17:27:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2541. [2021-12-14 17:27:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.2977142857142858) internal successors, (2271), 1790 states have internal predecessors, (2271), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-14 17:27:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3508 transitions. [2021-12-14 17:27:35,985 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3508 transitions. Word has length 71 [2021-12-14 17:27:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:35,986 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3508 transitions. [2021-12-14 17:27:35,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3508 transitions. [2021-12-14 17:27:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-14 17:27:35,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:35,990 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:27:35,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:27:35,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1510551762, now seen corresponding path program 1 times [2021-12-14 17:27:35,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089781904] [2021-12-14 17:27:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:35,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:27:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:27:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:27:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:27:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:27:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:27:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:36,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:36,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089781904] [2021-12-14 17:27:36,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089781904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:36,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:36,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:27:36,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956485461] [2021-12-14 17:27:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:36,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:27:36,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:27:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:36,187 INFO L87 Difference]: Start difference. First operand 2541 states and 3508 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 17:27:38,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:40,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:43,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:45,579 INFO L93 Difference]: Finished difference Result 5151 states and 7129 transitions. [2021-12-14 17:27:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:27:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-12-14 17:27:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:45,604 INFO L225 Difference]: With dead ends: 5151 [2021-12-14 17:27:45,604 INFO L226 Difference]: Without dead ends: 2661 [2021-12-14 17:27:45,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:27:45,615 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 977 mSDsluCounter, 7949 mSDsCounter, 0 mSdLazyCounter, 3478 mSolverCounterSat, 614 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 10925 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 3478 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:45,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 10925 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 3478 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-12-14 17:27:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2021-12-14 17:27:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2541. [2021-12-14 17:27:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 1750 states have (on average 1.2971428571428572) internal successors, (2270), 1789 states have internal predecessors, (2270), 622 states have call successors, (622), 170 states have call predecessors, (622), 168 states have return successors, (615), 603 states have call predecessors, (615), 615 states have call successors, (615) [2021-12-14 17:27:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3507 transitions. [2021-12-14 17:27:45,705 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3507 transitions. Word has length 81 [2021-12-14 17:27:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:45,705 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 3507 transitions. [2021-12-14 17:27:45,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 17:27:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3507 transitions. [2021-12-14 17:27:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 17:27:45,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:45,709 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:27:45,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:27:45,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash -419868096, now seen corresponding path program 1 times [2021-12-14 17:27:45,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:45,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266953981] [2021-12-14 17:27:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:45,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:27:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:27:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:27:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:27:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:27:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:27:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:27:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:27:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:45,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266953981] [2021-12-14 17:27:45,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266953981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:45,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:45,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:27:45,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841567888] [2021-12-14 17:27:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:45,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:27:45,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:45,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:27:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:45,905 INFO L87 Difference]: Start difference. First operand 2541 states and 3507 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 17:27:48,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:50,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:52,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:55,303 INFO L93 Difference]: Finished difference Result 5150 states and 7127 transitions. [2021-12-14 17:27:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:27:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2021-12-14 17:27:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:55,314 INFO L225 Difference]: With dead ends: 5150 [2021-12-14 17:27:55,314 INFO L226 Difference]: Without dead ends: 2650 [2021-12-14 17:27:55,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:27:55,321 INFO L933 BasicCegarLoop]: 2975 mSDtfsCounter, 978 mSDsluCounter, 7943 mSDsCounter, 0 mSdLazyCounter, 3474 mSolverCounterSat, 616 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 10918 SdHoareTripleChecker+Invalid, 4093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 3474 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:55,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 10918 Invalid, 4093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 3474 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-12-14 17:27:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-12-14 17:27:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2530. [2021-12-14 17:27:55,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1743 states have (on average 1.2971887550200802) internal successors, (2261), 1782 states have internal predecessors, (2261), 620 states have call successors, (620), 168 states have call predecessors, (620), 166 states have return successors, (613), 601 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-14 17:27:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3494 transitions. [2021-12-14 17:27:55,394 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3494 transitions. Word has length 85 [2021-12-14 17:27:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:55,395 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 3494 transitions. [2021-12-14 17:27:55,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 17:27:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3494 transitions. [2021-12-14 17:27:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-14 17:27:55,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:55,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:55,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:27:55,399 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1462653290, now seen corresponding path program 1 times [2021-12-14 17:27:55,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:55,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243442788] [2021-12-14 17:27:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:55,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:27:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 17:27:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:27:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:27:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:27:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:27:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:27:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:27:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:27:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 17:27:55,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:55,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243442788] [2021-12-14 17:27:55,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243442788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:55,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:55,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:27:55,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922770986] [2021-12-14 17:27:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:55,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:27:55,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:27:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:55,644 INFO L87 Difference]: Start difference. First operand 2530 states and 3494 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:27:58,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:00,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:03,702 INFO L93 Difference]: Finished difference Result 5256 states and 7292 transitions. [2021-12-14 17:28:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:28:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2021-12-14 17:28:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:03,715 INFO L225 Difference]: With dead ends: 5256 [2021-12-14 17:28:03,715 INFO L226 Difference]: Without dead ends: 2765 [2021-12-14 17:28:03,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:28:03,721 INFO L933 BasicCegarLoop]: 2943 mSDtfsCounter, 1623 mSDsluCounter, 6748 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 1501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 9691 SdHoareTripleChecker+Invalid, 5078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1501 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:03,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 9691 Invalid, 5078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1501 Valid, 3575 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 17:28:03,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2021-12-14 17:28:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2530. [2021-12-14 17:28:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1743 states have (on average 1.2966150315547906) internal successors, (2260), 1782 states have internal predecessors, (2260), 620 states have call successors, (620), 168 states have call predecessors, (620), 166 states have return successors, (613), 601 states have call predecessors, (613), 613 states have call successors, (613) [2021-12-14 17:28:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3493 transitions. [2021-12-14 17:28:03,791 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3493 transitions. Word has length 109 [2021-12-14 17:28:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 3493 transitions. [2021-12-14 17:28:03,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:28:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3493 transitions. [2021-12-14 17:28:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 17:28:03,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:03,795 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:03,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:28:03,795 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1803076531, now seen corresponding path program 1 times [2021-12-14 17:28:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297458116] [2021-12-14 17:28:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:28:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:28:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 17:28:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:28:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:28:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:28:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:28:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:28:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:28:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:28:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:28:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 17:28:04,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297458116] [2021-12-14 17:28:04,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297458116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:28:04,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166369915] [2021-12-14 17:28:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:04,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:28:04,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:28:04,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:28:04,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:28:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:05,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-14 17:28:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:28:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 17:28:05,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:28:05,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166369915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:05,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:28:05,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 16 [2021-12-14 17:28:05,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339316974] [2021-12-14 17:28:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:05,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 17:28:05,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 17:28:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:28:05,586 INFO L87 Difference]: Start difference. First operand 2530 states and 3493 transitions. Second operand has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 17:28:07,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:08,756 INFO L93 Difference]: Finished difference Result 5035 states and 6961 transitions. [2021-12-14 17:28:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:28:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 112 [2021-12-14 17:28:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:08,764 INFO L225 Difference]: With dead ends: 5035 [2021-12-14 17:28:08,764 INFO L226 Difference]: Without dead ends: 2539 [2021-12-14 17:28:08,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-12-14 17:28:08,770 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 2 mSDsluCounter, 30350 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33399 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:08,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 33399 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1458 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-12-14 17:28:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-14 17:28:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2537. [2021-12-14 17:28:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1748 states have (on average 1.295766590389016) internal successors, (2265), 1787 states have internal predecessors, (2265), 621 states have call successors, (621), 168 states have call predecessors, (621), 167 states have return successors, (620), 603 states have call predecessors, (620), 614 states have call successors, (620) [2021-12-14 17:28:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3506 transitions. [2021-12-14 17:28:08,838 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3506 transitions. Word has length 112 [2021-12-14 17:28:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:08,838 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3506 transitions. [2021-12-14 17:28:08,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-14 17:28:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3506 transitions. [2021-12-14 17:28:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-14 17:28:08,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:08,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:08,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:28:09,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-14 17:28:09,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1360497218, now seen corresponding path program 1 times [2021-12-14 17:28:09,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:09,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651826943] [2021-12-14 17:28:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:09,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:28:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:28:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:28:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 17:28:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:28:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 17:28:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:28:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:28:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 17:28:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:28:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:28:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:28:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 17:28:10,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651826943] [2021-12-14 17:28:10,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651826943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:28:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336782530] [2021-12-14 17:28:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:10,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:28:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:28:10,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:28:10,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process