./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX --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 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:14,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:14,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:14,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:14,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:14,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:14,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:14,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:14,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:14,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:14,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:14,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:14,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:14,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:14,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:14,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:14,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:14,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:14,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:14,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:14,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:14,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:14,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:14,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:14,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:14,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:14,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:14,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:14,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:14,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:14,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:14,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:14,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:14,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:14,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:14,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:14,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:14,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:14,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:14,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:14,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:14,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:34:14,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:14,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:14,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:14,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:14,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:14,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:14,632 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:14,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:14,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:14,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:14,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:34:14,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:14,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:34:14,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:34:14,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:14,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:34:14,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:14,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:14,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:14,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:14,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:34:14,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:34:14,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:34:14,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:14,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-09 09:34:14,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:14,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:14,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:14,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:14,945 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:14,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-09 09:34:15,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/data/81fc52eac/8b4df9a6b2434e7caf37c2ba8ef8406a/FLAG2620af3a6 [2021-11-09 09:34:15,845 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:15,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-09 09:34:15,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/data/81fc52eac/8b4df9a6b2434e7caf37c2ba8ef8406a/FLAG2620af3a6 [2021-11-09 09:34:16,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/data/81fc52eac/8b4df9a6b2434e7caf37c2ba8ef8406a [2021-11-09 09:34:16,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:16,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:34:16,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:16,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:16,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:16,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:16" (1/1) ... [2021-11-09 09:34:16,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b97dc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:16, skipping insertion in model container [2021-11-09 09:34:16,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:16" (1/1) ... [2021-11-09 09:34:16,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:16,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:17,267 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-09 09:34:17,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:17,362 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:34:17,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-09 09:34:17,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:17,639 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:34:17,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17 WrapperNode [2021-11-09 09:34:17,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:17,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:17,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:34:17,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:34:17,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:17,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:34:17,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:34:17,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:34:17,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:34:17,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:34:17,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:34:17,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:34:17,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (1/1) ... [2021-11-09 09:34:17,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:17,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:34:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:34:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:34:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:34:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:34:18,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:34:18,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:34:18,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:34:19,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:34:19,501 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-09 09:34:19,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:19 BoogieIcfgContainer [2021-11-09 09:34:19,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:34:19,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:34:19,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:34:19,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:34:19,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:34:16" (1/3) ... [2021-11-09 09:34:19,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4136e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:19, skipping insertion in model container [2021-11-09 09:34:19,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:17" (2/3) ... [2021-11-09 09:34:19,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4136e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:19, skipping insertion in model container [2021-11-09 09:34:19,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:19" (3/3) ... [2021-11-09 09:34:19,514 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-09 09:34:19,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:34:19,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-09 09:34:19,600 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:34:19,608 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:34:19,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 09:34:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:34:19,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:19,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:19,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash -21777128, now seen corresponding path program 1 times [2021-11-09 09:34:19,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:19,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098312725] [2021-11-09 09:34:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:19,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098312725] [2021-11-09 09:34:20,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098312725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:20,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384518818] [2021-11-09 09:34:20,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:34:20,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:34:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:34:20,130 INFO L87 Difference]: Start difference. First operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:20,166 INFO L93 Difference]: Finished difference Result 344 states and 465 transitions. [2021-11-09 09:34:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:34:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 09:34:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:20,180 INFO L225 Difference]: With dead ends: 344 [2021-11-09 09:34:20,180 INFO L226 Difference]: Without dead ends: 166 [2021-11-09 09:34:20,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:34:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-09 09:34:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-09 09:34:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.31055900621118) internal successors, (211), 165 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-09 09:34:20,232 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 17 [2021-11-09 09:34:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:20,232 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-09 09:34:20,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-09 09:34:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:34:20,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:20,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:20,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:34:20,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1032894378, now seen corresponding path program 1 times [2021-11-09 09:34:20,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:20,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061394910] [2021-11-09 09:34:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:20,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061394910] [2021-11-09 09:34:20,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061394910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:20,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920819139] [2021-11-09 09:34:20,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:20,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:20,394 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:20,513 INFO L93 Difference]: Finished difference Result 455 states and 589 transitions. [2021-11-09 09:34:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:20,515 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 09:34:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:20,519 INFO L225 Difference]: With dead ends: 455 [2021-11-09 09:34:20,522 INFO L226 Difference]: Without dead ends: 296 [2021-11-09 09:34:20,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-09 09:34:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-09 09:34:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.3127147766323024) internal successors, (382), 295 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 382 transitions. [2021-11-09 09:34:20,577 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 382 transitions. Word has length 17 [2021-11-09 09:34:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:20,577 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 382 transitions. [2021-11-09 09:34:20,578 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,578 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 382 transitions. [2021-11-09 09:34:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 09:34:20,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:20,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:20,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:34:20,580 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1262223031, now seen corresponding path program 1 times [2021-11-09 09:34:20,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:20,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869639785] [2021-11-09 09:34:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:20,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869639785] [2021-11-09 09:34:20,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869639785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:20,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137653132] [2021-11-09 09:34:20,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:20,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:20,680 INFO L87 Difference]: Start difference. First operand 296 states and 382 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:20,760 INFO L93 Difference]: Finished difference Result 750 states and 965 transitions. [2021-11-09 09:34:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-09 09:34:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:20,764 INFO L225 Difference]: With dead ends: 750 [2021-11-09 09:34:20,764 INFO L226 Difference]: Without dead ends: 461 [2021-11-09 09:34:20,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-09 09:34:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 299. [2021-11-09 09:34:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.3061224489795917) internal successors, (384), 298 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 384 transitions. [2021-11-09 09:34:20,791 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 384 transitions. Word has length 29 [2021-11-09 09:34:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:20,791 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 384 transitions. [2021-11-09 09:34:20,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 384 transitions. [2021-11-09 09:34:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 09:34:20,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:20,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:20,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:34:20,794 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 512843913, now seen corresponding path program 1 times [2021-11-09 09:34:20,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:20,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123134796] [2021-11-09 09:34:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:20,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:20,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123134796] [2021-11-09 09:34:20,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123134796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:20,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414878536] [2021-11-09 09:34:20,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:20,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:20,908 INFO L87 Difference]: Start difference. First operand 299 states and 384 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:20,963 INFO L93 Difference]: Finished difference Result 881 states and 1137 transitions. [2021-11-09 09:34:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:20,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-09 09:34:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:20,967 INFO L225 Difference]: With dead ends: 881 [2021-11-09 09:34:20,968 INFO L226 Difference]: Without dead ends: 589 [2021-11-09 09:34:20,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-09 09:34:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 577. [2021-11-09 09:34:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 572 states have (on average 1.3041958041958042) internal successors, (746), 576 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 746 transitions. [2021-11-09 09:34:21,001 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 746 transitions. Word has length 29 [2021-11-09 09:34:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,001 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 746 transitions. [2021-11-09 09:34:21,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 746 transitions. [2021-11-09 09:34:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-09 09:34:21,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:34:21,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1281701350, now seen corresponding path program 1 times [2021-11-09 09:34:21,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:21,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015155974] [2021-11-09 09:34:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:21,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:21,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015155974] [2021-11-09 09:34:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015155974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:21,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:21,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893983017] [2021-11-09 09:34:21,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:21,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,165 INFO L87 Difference]: Start difference. First operand 577 states and 746 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:21,199 INFO L93 Difference]: Finished difference Result 577 states and 746 transitions. [2021-11-09 09:34:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-09 09:34:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:21,207 INFO L225 Difference]: With dead ends: 577 [2021-11-09 09:34:21,207 INFO L226 Difference]: Without dead ends: 575 [2021-11-09 09:34:21,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-09 09:34:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-11-09 09:34:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 571 states have (on average 1.3029772329246936) internal successors, (744), 574 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 744 transitions. [2021-11-09 09:34:21,249 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 744 transitions. Word has length 30 [2021-11-09 09:34:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 744 transitions. [2021-11-09 09:34:21,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 744 transitions. [2021-11-09 09:34:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 09:34:21,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:34:21,258 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1078029645, now seen corresponding path program 1 times [2021-11-09 09:34:21,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:21,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069138091] [2021-11-09 09:34:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:21,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:21,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069138091] [2021-11-09 09:34:21,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069138091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:21,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:21,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:21,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657664896] [2021-11-09 09:34:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:21,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,373 INFO L87 Difference]: Start difference. First operand 575 states and 744 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:21,411 INFO L93 Difference]: Finished difference Result 575 states and 744 transitions. [2021-11-09 09:34:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-09 09:34:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:21,416 INFO L225 Difference]: With dead ends: 575 [2021-11-09 09:34:21,416 INFO L226 Difference]: Without dead ends: 573 [2021-11-09 09:34:21,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-09 09:34:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-11-09 09:34:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 570 states have (on average 1.3017543859649123) internal successors, (742), 572 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 742 transitions. [2021-11-09 09:34:21,464 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 742 transitions. Word has length 31 [2021-11-09 09:34:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,466 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 742 transitions. [2021-11-09 09:34:21,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 742 transitions. [2021-11-09 09:34:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 09:34:21,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:34:21,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash 940825924, now seen corresponding path program 1 times [2021-11-09 09:34:21,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:21,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904084727] [2021-11-09 09:34:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:21,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:21,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904084727] [2021-11-09 09:34:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904084727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:21,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:21,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:21,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235508392] [2021-11-09 09:34:21,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:21,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,578 INFO L87 Difference]: Start difference. First operand 573 states and 742 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:21,611 INFO L93 Difference]: Finished difference Result 573 states and 742 transitions. [2021-11-09 09:34:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:21,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-09 09:34:21,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:21,616 INFO L225 Difference]: With dead ends: 573 [2021-11-09 09:34:21,616 INFO L226 Difference]: Without dead ends: 571 [2021-11-09 09:34:21,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-09 09:34:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-09 09:34:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 569 states have (on average 1.3005272407732864) internal successors, (740), 570 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 740 transitions. [2021-11-09 09:34:21,668 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 740 transitions. Word has length 32 [2021-11-09 09:34:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,669 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 740 transitions. [2021-11-09 09:34:21,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 740 transitions. [2021-11-09 09:34:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 09:34:21,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:34:21,671 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash -899160867, now seen corresponding path program 1 times [2021-11-09 09:34:21,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:21,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899566639] [2021-11-09 09:34:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:21,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899566639] [2021-11-09 09:34:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899566639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:21,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:21,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:34:21,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154926547] [2021-11-09 09:34:21,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:21,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,786 INFO L87 Difference]: Start difference. First operand 571 states and 740 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:21,824 INFO L93 Difference]: Finished difference Result 571 states and 740 transitions. [2021-11-09 09:34:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:21,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-09 09:34:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:21,828 INFO L225 Difference]: With dead ends: 571 [2021-11-09 09:34:21,829 INFO L226 Difference]: Without dead ends: 562 [2021-11-09 09:34:21,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-09 09:34:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-11-09 09:34:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.2994652406417113) internal successors, (729), 561 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 729 transitions. [2021-11-09 09:34:21,889 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 729 transitions. Word has length 33 [2021-11-09 09:34:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 729 transitions. [2021-11-09 09:34:21,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 729 transitions. [2021-11-09 09:34:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-09 09:34:21,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:21,895 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:21,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:34:21,896 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1288304928, now seen corresponding path program 1 times [2021-11-09 09:34:21,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:21,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159533206] [2021-11-09 09:34:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:21,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:22,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:22,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159533206] [2021-11-09 09:34:22,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159533206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:22,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:22,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:22,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419141935] [2021-11-09 09:34:22,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:22,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:22,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:22,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:22,027 INFO L87 Difference]: Start difference. First operand 562 states and 729 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:22,099 INFO L93 Difference]: Finished difference Result 1175 states and 1533 transitions. [2021-11-09 09:34:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:22,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-09 09:34:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:22,105 INFO L225 Difference]: With dead ends: 1175 [2021-11-09 09:34:22,105 INFO L226 Difference]: Without dead ends: 620 [2021-11-09 09:34:22,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-09 09:34:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 612. [2021-11-09 09:34:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.309328968903437) internal successors, (800), 611 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 800 transitions. [2021-11-09 09:34:22,164 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 800 transitions. Word has length 86 [2021-11-09 09:34:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:22,165 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 800 transitions. [2021-11-09 09:34:22,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 800 transitions. [2021-11-09 09:34:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:34:22,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:22,167 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:22,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:34:22,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1355240599, now seen corresponding path program 1 times [2021-11-09 09:34:22,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:22,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943403425] [2021-11-09 09:34:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:22,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:22,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:22,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943403425] [2021-11-09 09:34:22,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943403425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:22,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:22,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:22,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222679552] [2021-11-09 09:34:22,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:22,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:22,275 INFO L87 Difference]: Start difference. First operand 612 states and 800 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:22,395 INFO L93 Difference]: Finished difference Result 1880 states and 2484 transitions. [2021-11-09 09:34:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:34:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:22,403 INFO L225 Difference]: With dead ends: 1880 [2021-11-09 09:34:22,403 INFO L226 Difference]: Without dead ends: 1275 [2021-11-09 09:34:22,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-11-09 09:34:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 624. [2021-11-09 09:34:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.303370786516854) internal successors, (812), 623 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 812 transitions. [2021-11-09 09:34:22,460 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 812 transitions. Word has length 94 [2021-11-09 09:34:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:22,460 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 812 transitions. [2021-11-09 09:34:22,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 812 transitions. [2021-11-09 09:34:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:34:22,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:22,463 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:34:22,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1473601232, now seen corresponding path program 1 times [2021-11-09 09:34:22,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:22,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315647063] [2021-11-09 09:34:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:22,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:22,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:22,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315647063] [2021-11-09 09:34:22,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315647063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:22,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:22,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:22,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901963614] [2021-11-09 09:34:22,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:22,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:22,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:22,614 INFO L87 Difference]: Start difference. First operand 624 states and 812 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:22,765 INFO L93 Difference]: Finished difference Result 1694 states and 2206 transitions. [2021-11-09 09:34:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-09 09:34:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:22,773 INFO L225 Difference]: With dead ends: 1694 [2021-11-09 09:34:22,773 INFO L226 Difference]: Without dead ends: 1069 [2021-11-09 09:34:22,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-09 09:34:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 624. [2021-11-09 09:34:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.2969502407704654) internal successors, (808), 623 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 808 transitions. [2021-11-09 09:34:22,838 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 808 transitions. Word has length 96 [2021-11-09 09:34:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:22,838 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 808 transitions. [2021-11-09 09:34:22,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 808 transitions. [2021-11-09 09:34:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 09:34:22,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:22,840 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:22,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:34:22,841 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash -369507124, now seen corresponding path program 1 times [2021-11-09 09:34:22,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:22,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966807065] [2021-11-09 09:34:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:22,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:23,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:23,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966807065] [2021-11-09 09:34:23,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966807065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:23,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:23,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247799429] [2021-11-09 09:34:23,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:34:23,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:34:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:34:23,048 INFO L87 Difference]: Start difference. First operand 624 states and 808 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:23,496 INFO L93 Difference]: Finished difference Result 2276 states and 2960 transitions. [2021-11-09 09:34:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:34:23,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-09 09:34:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:23,506 INFO L225 Difference]: With dead ends: 2276 [2021-11-09 09:34:23,507 INFO L226 Difference]: Without dead ends: 1659 [2021-11-09 09:34:23,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:34:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2021-11-09 09:34:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 648. [2021-11-09 09:34:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.285935085007728) internal successors, (832), 647 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 832 transitions. [2021-11-09 09:34:23,614 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 832 transitions. Word has length 98 [2021-11-09 09:34:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:23,614 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 832 transitions. [2021-11-09 09:34:23,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 832 transitions. [2021-11-09 09:34:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:34:23,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:23,616 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:23,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:34:23,617 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash -698583888, now seen corresponding path program 1 times [2021-11-09 09:34:23,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:23,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143192574] [2021-11-09 09:34:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:23,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:23,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:23,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143192574] [2021-11-09 09:34:23,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143192574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:23,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:23,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:34:23,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927903205] [2021-11-09 09:34:23,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:34:23,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:34:23,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:23,891 INFO L87 Difference]: Start difference. First operand 648 states and 832 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:24,375 INFO L93 Difference]: Finished difference Result 2750 states and 3578 transitions. [2021-11-09 09:34:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:34:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-09 09:34:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:24,387 INFO L225 Difference]: With dead ends: 2750 [2021-11-09 09:34:24,387 INFO L226 Difference]: Without dead ends: 2109 [2021-11-09 09:34:24,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:34:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-11-09 09:34:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 676. [2021-11-09 09:34:24,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.28) internal successors, (864), 675 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 864 transitions. [2021-11-09 09:34:24,477 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 864 transitions. Word has length 100 [2021-11-09 09:34:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:24,478 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 864 transitions. [2021-11-09 09:34:24,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 864 transitions. [2021-11-09 09:34:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 09:34:24,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:24,480 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:24,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:34:24,480 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 777867468, now seen corresponding path program 1 times [2021-11-09 09:34:24,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:24,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093105796] [2021-11-09 09:34:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:24,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:24,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:24,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093105796] [2021-11-09 09:34:24,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093105796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:24,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:24,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366211640] [2021-11-09 09:34:24,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:24,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:24,652 INFO L87 Difference]: Start difference. First operand 676 states and 864 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:24,962 INFO L93 Difference]: Finished difference Result 2508 states and 3220 transitions. [2021-11-09 09:34:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-09 09:34:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:24,974 INFO L225 Difference]: With dead ends: 2508 [2021-11-09 09:34:24,974 INFO L226 Difference]: Without dead ends: 1839 [2021-11-09 09:34:24,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-09 09:34:25,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 692. [2021-11-09 09:34:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2793053545586106) internal successors, (884), 691 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 884 transitions. [2021-11-09 09:34:25,068 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 884 transitions. Word has length 102 [2021-11-09 09:34:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:25,069 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 884 transitions. [2021-11-09 09:34:25,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 884 transitions. [2021-11-09 09:34:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 09:34:25,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:25,074 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:25,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:34:25,075 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -370954712, now seen corresponding path program 1 times [2021-11-09 09:34:25,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:25,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470634563] [2021-11-09 09:34:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:25,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:25,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:25,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470634563] [2021-11-09 09:34:25,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470634563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:25,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:25,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:25,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759582673] [2021-11-09 09:34:25,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:25,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:25,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:25,229 INFO L87 Difference]: Start difference. First operand 692 states and 884 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:25,538 INFO L93 Difference]: Finished difference Result 2488 states and 3188 transitions. [2021-11-09 09:34:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-09 09:34:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:25,548 INFO L225 Difference]: With dead ends: 2488 [2021-11-09 09:34:25,548 INFO L226 Difference]: Without dead ends: 1803 [2021-11-09 09:34:25,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-09 09:34:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 704. [2021-11-09 09:34:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.2745376955903271) internal successors, (896), 703 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 896 transitions. [2021-11-09 09:34:25,658 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 896 transitions. Word has length 104 [2021-11-09 09:34:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:25,658 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 896 transitions. [2021-11-09 09:34:25,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 896 transitions. [2021-11-09 09:34:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:34:25,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:25,664 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:25,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:34:25,665 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1848418332, now seen corresponding path program 1 times [2021-11-09 09:34:25,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:25,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786574369] [2021-11-09 09:34:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:25,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:26,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:26,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786574369] [2021-11-09 09:34:26,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786574369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:26,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:26,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:34:26,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213383010] [2021-11-09 09:34:26,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:26,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:26,064 INFO L87 Difference]: Start difference. First operand 704 states and 896 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:27,225 INFO L93 Difference]: Finished difference Result 2622 states and 3350 transitions. [2021-11-09 09:34:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:34:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-09 09:34:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:27,236 INFO L225 Difference]: With dead ends: 2622 [2021-11-09 09:34:27,237 INFO L226 Difference]: Without dead ends: 1925 [2021-11-09 09:34:27,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:34:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-11-09 09:34:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 704. [2021-11-09 09:34:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.271692745376956) internal successors, (894), 703 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 894 transitions. [2021-11-09 09:34:27,401 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 894 transitions. Word has length 106 [2021-11-09 09:34:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:27,402 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 894 transitions. [2021-11-09 09:34:27,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 894 transitions. [2021-11-09 09:34:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 09:34:27,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:27,405 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:27,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:34:27,405 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2119216531, now seen corresponding path program 1 times [2021-11-09 09:34:27,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:27,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17711999] [2021-11-09 09:34:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:27,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:27,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:27,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17711999] [2021-11-09 09:34:27,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17711999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:27,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:27,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:27,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556858479] [2021-11-09 09:34:27,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:27,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:27,535 INFO L87 Difference]: Start difference. First operand 704 states and 894 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:27,855 INFO L93 Difference]: Finished difference Result 2303 states and 2941 transitions. [2021-11-09 09:34:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 09:34:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:27,866 INFO L225 Difference]: With dead ends: 2303 [2021-11-09 09:34:27,866 INFO L226 Difference]: Without dead ends: 1606 [2021-11-09 09:34:27,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-09 09:34:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 712. [2021-11-09 09:34:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.2686357243319268) internal successors, (902), 711 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 902 transitions. [2021-11-09 09:34:28,040 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 902 transitions. Word has length 122 [2021-11-09 09:34:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:28,040 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 902 transitions. [2021-11-09 09:34:28,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 902 transitions. [2021-11-09 09:34:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 09:34:28,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:28,043 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:28,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:34:28,044 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1474686187, now seen corresponding path program 1 times [2021-11-09 09:34:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:28,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046238682] [2021-11-09 09:34:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:28,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:28,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:28,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046238682] [2021-11-09 09:34:28,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046238682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:34:28,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485417188] [2021-11-09 09:34:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:28,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:34:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:28,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:34:28,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:34:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:28,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:28,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:34:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485417188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:29,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:34:29,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-09 09:34:29,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242473875] [2021-11-09 09:34:29,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:29,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:29,105 INFO L87 Difference]: Start difference. First operand 712 states and 902 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:29,499 INFO L93 Difference]: Finished difference Result 2123 states and 2692 transitions. [2021-11-09 09:34:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 09:34:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:29,513 INFO L225 Difference]: With dead ends: 2123 [2021-11-09 09:34:29,513 INFO L226 Difference]: Without dead ends: 2118 [2021-11-09 09:34:29,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-11-09 09:34:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2068. [2021-11-09 09:34:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 1.2752781809385583) internal successors, (2636), 2067 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2636 transitions. [2021-11-09 09:34:29,888 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2636 transitions. Word has length 122 [2021-11-09 09:34:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:29,889 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2636 transitions. [2021-11-09 09:34:29,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2636 transitions. [2021-11-09 09:34:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-09 09:34:29,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:29,894 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:29,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:30,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:34:30,115 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 09:34:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1423028811, now seen corresponding path program 1 times [2021-11-09 09:34:30,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:30,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619078214] [2021-11-09 09:34:30,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:30,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:32,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:32,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619078214] [2021-11-09 09:34:32,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619078214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:34:32,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177864048] [2021-11-09 09:34:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:32,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:34:32,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:32,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:34:32,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307b0b59-29f9-4051-95fd-5bd6fcefc848/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:34:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:32,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-09 09:34:32,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:32,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:34:32,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-09 09:34:33,160 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 09:34:33,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-09 09:34:33,174 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-09 09:34:33,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-09 09:34:33,812 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-09 09:34:33,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 43 [2021-11-09 09:34:35,311 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-09 09:34:35,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 41 treesize of output 59 [2021-11-09 09:34:36,373 INFO L354 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2021-11-09 09:34:36,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 50 [2021-11-09 09:34:51,911 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-09 09:34:51,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-09 09:34:51,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-09 09:34:52,473 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-09 09:34:52,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-09 09:34:52,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-09 09:34:52,572 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-09 09:34:52,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 68 [2021-11-09 09:34:52,589 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-09 09:34:52,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2021-11-09 09:35:03,677 WARN L207 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 1000 DAG size of output: 390 [2021-11-09 09:35:03,685 INFO L354 Elim1Store]: treesize reduction 6824, result has 10.2 percent of original size [2021-11-09 09:35:03,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 77 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 81 new quantified variables, introduced 159 case distinctions, treesize of input 17871223 treesize of output 7458945 [2021-11-09 09:35:33,309 WARN L207 SmtUtils]: Spent 29.62 s on a formula simplification that was a NOOP. DAG size: 2503 [2021-11-09 09:36:02,229 WARN L207 SmtUtils]: Spent 28.86 s on a formula simplification that was a NOOP. DAG size: 2497 [2021-11-09 09:37:47,162 WARN L207 SmtUtils]: Spent 1.66 m on a formula simplification. DAG size of input: 3231 DAG size of output: 1110 [2021-11-09 09:37:47,167 INFO L354 Elim1Store]: treesize reduction 32874, result has 15.5 percent of original size [2021-11-09 09:37:47,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 77 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 385 case distinctions, treesize of input 7459546 treesize of output 7463579 [2021-11-09 09:38:17,631 WARN L207 SmtUtils]: Spent 30.45 s on a formula simplification that was a NOOP. DAG size: 3407 [2021-11-09 09:38:49,910 WARN L207 SmtUtils]: Spent 31.78 s on a formula simplification that was a NOOP. DAG size: 3403 [2021-11-09 09:45:00,379 WARN L207 SmtUtils]: Spent 5.39 m on a formula simplification. DAG size of input: 1809 DAG size of output: 1809