./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc --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 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:51:29,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:29,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:29,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:29,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:29,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:29,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:29,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:29,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:29,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:29,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:29,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:29,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:29,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:29,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:29,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:29,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:29,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:29,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:29,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:29,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:29,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:29,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:29,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:29,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:29,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:29,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:29,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:29,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:29,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:29,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:29,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:29,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:29,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:29,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:29,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:29,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:29,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:29,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:29,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:29,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:29,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:51:29,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:29,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:29,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:29,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:29,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:51:29,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:51:29,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:29,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:29,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:29,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:29,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:51:29,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:29,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:51:29,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:51:29,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:51:29,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:29,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:29,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:51:29,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:29,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:29,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:51:29,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:29,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:29,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:51:29,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:51:29,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:51:29,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:51:29,532 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:51:29,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:51:29,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:51:29,533 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_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e [2022-11-02 20:51:29,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:29,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:29,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:29,906 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:29,910 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:29,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:29,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/f73ef1f9d/4a321eb1474c42139b5563b1ab2b867b/FLAG6fc21d8fb [2022-11-02 20:51:30,647 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:30,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:30,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/f73ef1f9d/4a321eb1474c42139b5563b1ab2b867b/FLAG6fc21d8fb [2022-11-02 20:51:30,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/f73ef1f9d/4a321eb1474c42139b5563b1ab2b867b [2022-11-02 20:51:30,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:30,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:30,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:30,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:30,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:30,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:30" (1/1) ... [2022-11-02 20:51:30,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2c6567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:30, skipping insertion in model container [2022-11-02 20:51:30,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:30" (1/1) ... [2022-11-02 20:51:30,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:31,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:31,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-11-02 20:51:31,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:31,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:31,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-11-02 20:51:31,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:31,638 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:31,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31 WrapperNode [2022-11-02 20:51:31,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:31,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:31,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:31,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:31,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,773 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 461 [2022-11-02 20:51:31,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:31,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:31,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:31,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:31,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:31,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:31,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:31,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:31,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (1/1) ... [2022-11-02 20:51:31,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:31,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:31,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:32,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:32,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:34,930 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:34,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:34,939 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:51:34,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:34 BoogieIcfgContainer [2022-11-02 20:51:34,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:34,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:34,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:34,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:34,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:51:30" (1/3) ... [2022-11-02 20:51:34,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfc13d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:34, skipping insertion in model container [2022-11-02 20:51:34,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:31" (2/3) ... [2022-11-02 20:51:34,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfc13d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:34, skipping insertion in model container [2022-11-02 20:51:34,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:34" (3/3) ... [2022-11-02 20:51:34,951 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:34,971 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:34,972 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:35,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:35,032 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c8ebe94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:35,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:51:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-11-02 20:51:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:51:35,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:35,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:51:35,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:51:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:35,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358292218] [2022-11-02 20:51:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:35,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:51:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:51:35,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:51:35,340 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:51:35,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:51:35,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:51:35,349 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:51:35,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:51:35,371 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:51:35,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:51:35 BoogieIcfgContainer [2022-11-02 20:51:35,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:51:35,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:51:35,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:51:35,379 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:51:35,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:34" (3/4) ... [2022-11-02 20:51:35,384 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:51:35,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:51:35,386 INFO L158 Benchmark]: Toolchain (without parser) took 4454.68ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 69.4MB in the beginning and 68.3MB in the end (delta: 1.0MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,386 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:35,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.64ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 73.1MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 131.93ms. Allocated memory is still 107.0MB. Free memory was 73.1MB in the beginning and 64.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,388 INFO L158 Benchmark]: Boogie Preprocessor took 61.36ms. Allocated memory is still 107.0MB. Free memory was 64.7MB in the beginning and 60.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,389 INFO L158 Benchmark]: RCFGBuilder took 3104.84ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 60.1MB in the beginning and 90.4MB in the end (delta: -30.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,390 INFO L158 Benchmark]: TraceAbstraction took 435.00ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 68.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:51:35,390 INFO L158 Benchmark]: Witness Printer took 5.29ms. Allocated memory is still 142.6MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:51:35,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.64ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 73.1MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 131.93ms. Allocated memory is still 107.0MB. Free memory was 73.1MB in the beginning and 64.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.36ms. Allocated memory is still 107.0MB. Free memory was 64.7MB in the beginning and 60.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3104.84ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 60.1MB in the beginning and 90.4MB in the end (delta: -30.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. * TraceAbstraction took 435.00ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 68.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.29ms. Allocated memory is still 142.6MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 74, overapproximation of bitwiseAnd at line 79. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 6); [L29] const SORT_27 msb_SORT_27 = (SORT_27)1 << (6 - 1); [L31] const SORT_1 var_3 = 0; [L32] const SORT_1 var_9 = 1; [L33] const SORT_27 var_28 = 1; [L34] const SORT_27 var_32 = 19; [L35] const SORT_27 var_45 = 17; [L36] const SORT_27 var_158 = 3; [L38] SORT_1 input_2; [L40] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_27 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_27; [L50] SORT_1 init_5_arg_1 = var_3; [L51] state_4 = init_5_arg_1 [L52] SORT_1 init_14_arg_1 = var_9; [L53] state_13 = init_14_arg_1 [L54] SORT_1 init_16_arg_1 = var_3; [L55] state_15 = init_16_arg_1 [L56] SORT_1 init_18_arg_1 = var_3; [L57] state_17 = init_18_arg_1 [L58] SORT_1 init_20_arg_1 = var_3; [L59] state_19 = init_20_arg_1 [L60] SORT_1 init_22_arg_1 = var_3; [L61] state_21 = init_22_arg_1 [L62] SORT_1 init_24_arg_1 = var_3; [L63] state_23 = init_24_arg_1 [L64] SORT_1 init_26_arg_1 = var_9; [L65] state_25 = init_26_arg_1 [L66] SORT_27 init_30_arg_1 = var_28; [L67] state_29 = init_30_arg_1 VAL [init_14_arg_1=1, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=1, init_30_arg_1=1, init_5_arg_1=0, mask_SORT_1=1, mask_SORT_27=63, msb_SORT_1=1, msb_SORT_27=32, state_13=1, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=1, state_29=1, state_4=0, var_158=3, var_28=1, var_3=0, var_32=19, var_45=17, var_9=1] [L70] input_2 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_6_arg_0 = state_4; [L74] SORT_1 var_6 = ~var_6_arg_0; [L75] SORT_1 var_10_arg_0 = var_6; [L76] SORT_1 var_10 = ~var_10_arg_0; [L77] SORT_1 var_11_arg_0 = var_9; [L78] SORT_1 var_11_arg_1 = var_10; [L79] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L80] var_11 = var_11 & mask_SORT_1 [L81] SORT_1 bad_12_arg_0 = var_11; [L82] CALL __VERIFIER_assert(!(bad_12_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:51:35,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc --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 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:51:37,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:51:37,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:51:38,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:51:38,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:51:38,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:51:38,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:51:38,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:51:38,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:51:38,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:51:38,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:51:38,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:51:38,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:51:38,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:51:38,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:51:38,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:51:38,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:51:38,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:51:38,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:51:38,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:51:38,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:51:38,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:51:38,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:51:38,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:51:38,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:51:38,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:51:38,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:51:38,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:51:38,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:51:38,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:51:38,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:51:38,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:51:38,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:51:38,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:51:38,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:51:38,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:51:38,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:51:38,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:51:38,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:51:38,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:51:38,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:51:38,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:51:38,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:51:38,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:51:38,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:51:38,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:51:38,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:51:38,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:51:38,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:51:38,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:51:38,136 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:51:38,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:51:38,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:51:38,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:51:38,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:51:38,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:51:38,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:51:38,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:51:38,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:51:38,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:51:38,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:51:38,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:51:38,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:51:38,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:51:38,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:51:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:38,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:51:38,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:51:38,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:51:38,142 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:51:38,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:51:38,142 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:51:38,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:51:38,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:51:38,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:51:38,143 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19f6395c4ae8060ccaae4c72a4fb1648974175c0b145c9e17ae6b3ed3f5f936e [2022-11-02 20:51:38,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:51:38,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:51:38,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:51:38,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:51:38,597 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:51:38,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:38,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/722754218/1e052c181e084fd09efbe68562cbd57e/FLAGac4fe9ce7 [2022-11-02 20:51:39,267 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:51:39,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:39,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/722754218/1e052c181e084fd09efbe68562cbd57e/FLAGac4fe9ce7 [2022-11-02 20:51:39,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/data/722754218/1e052c181e084fd09efbe68562cbd57e [2022-11-02 20:51:39,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:51:39,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:51:39,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:39,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:51:39,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:51:39,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:39" (1/1) ... [2022-11-02 20:51:39,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e9fd92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:39, skipping insertion in model container [2022-11-02 20:51:39,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:51:39" (1/1) ... [2022-11-02 20:51:39,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:51:39,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:51:39,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-11-02 20:51:39,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:39,876 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:51:39,891 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1107,1120] [2022-11-02 20:51:39,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:51:40,009 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:51:40,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40 WrapperNode [2022-11-02 20:51:40,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:51:40,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:40,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:51:40,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:51:40,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,077 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 461 [2022-11-02 20:51:40,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:51:40,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:51:40,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:51:40,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:51:40,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:51:40,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:51:40,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:51:40,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:51:40,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (1/1) ... [2022-11-02 20:51:40,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:51:40,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:51:40,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:51:40,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:51:40,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:51:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:51:40,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:51:40,526 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:51:41,171 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:51:41,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:51:41,185 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:51:41,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:41 BoogieIcfgContainer [2022-11-02 20:51:41,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:51:41,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:51:41,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:51:41,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:51:41,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:51:39" (1/3) ... [2022-11-02 20:51:41,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:41, skipping insertion in model container [2022-11-02 20:51:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:51:40" (2/3) ... [2022-11-02 20:51:41,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:51:41, skipping insertion in model container [2022-11-02 20:51:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:51:41" (3/3) ... [2022-11-02 20:51:41,201 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2022-11-02 20:51:41,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:51:41,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:51:41,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:51:41,301 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4656038b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:51:41,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:51:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-11-02 20:51:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:51:41,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:41,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:51:41,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:41,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:51:41,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:41,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538798069] [2022-11-02 20:51:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:41,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:41,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:51:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:51:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:41,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:51:41,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538798069] [2022-11-02 20:51:41,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538798069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:41,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217886452] [2022-11-02 20:51:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:41,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:41,681 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 30 states have internal predecessors, (43), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:51:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:41,813 INFO L93 Difference]: Finished difference Result 80 states and 120 transitions. [2022-11-02 20:51:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:51:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-02 20:51:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:41,832 INFO L225 Difference]: With dead ends: 80 [2022-11-02 20:51:41,832 INFO L226 Difference]: Without dead ends: 51 [2022-11-02 20:51:41,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:51:41,843 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 98 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:51:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-02 20:51:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 29. [2022-11-02 20:51:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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) [2022-11-02 20:51:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-02 20:51:41,900 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 5 [2022-11-02 20:51:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:41,901 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-02 20:51:41,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:51:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-02 20:51:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:51:41,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:41,904 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:51:41,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:42,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:42,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash 202435871, now seen corresponding path program 1 times [2022-11-02 20:51:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:42,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86742863] [2022-11-02 20:51:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:42,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:42,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:42,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:51:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:42,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:51:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:42,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:51:42,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86742863] [2022-11-02 20:51:42,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86742863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:42,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:42,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944305869] [2022-11-02 20:51:42,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:42,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:42,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:42,465 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-02 20:51:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:42,542 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2022-11-02 20:51:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:51:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2022-11-02 20:51:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:42,544 INFO L225 Difference]: With dead ends: 82 [2022-11-02 20:51:42,544 INFO L226 Difference]: Without dead ends: 57 [2022-11-02 20:51:42,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:51:42,546 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 60 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:42,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 93 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:51:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-02 20:51:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2022-11-02 20:51:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) [2022-11-02 20:51:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-11-02 20:51:42,554 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 28 [2022-11-02 20:51:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:42,555 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-11-02 20:51:42,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-02 20:51:42,555 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-11-02 20:51:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:51:42,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:42,556 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:51:42,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:42,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:42,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash -220265955, now seen corresponding path program 1 times [2022-11-02 20:51:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:42,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714092076] [2022-11-02 20:51:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:42,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:42,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:42,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:51:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:43,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:51:43,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:43,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:43,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:43,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714092076] [2022-11-02 20:51:43,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714092076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:43,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:43,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:51:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376307521] [2022-11-02 20:51:43,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:51:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:51:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:51:43,723 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-11-02 20:51:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:43,948 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2022-11-02 20:51:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:51:43,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 28 [2022-11-02 20:51:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:43,952 INFO L225 Difference]: With dead ends: 78 [2022-11-02 20:51:43,952 INFO L226 Difference]: Without dead ends: 76 [2022-11-02 20:51:43,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:51:43,956 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 129 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:43,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 181 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2022-11-02 20:51:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-02 20:51:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2022-11-02 20:51:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 53 states have internal predecessors, (73), 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) [2022-11-02 20:51:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-02 20:51:43,972 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 28 [2022-11-02 20:51:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-02 20:51:43,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-11-02 20:51:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-02 20:51:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:51:43,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:43,976 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:51:43,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:44,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2025704289, now seen corresponding path program 1 times [2022-11-02 20:51:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:44,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931671500] [2022-11-02 20:51:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:44,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:44,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:44,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:51:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:51:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:44,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:51:44,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931671500] [2022-11-02 20:51:44,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931671500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:44,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:44,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:51:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121837362] [2022-11-02 20:51:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:51:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:51:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:51:44,484 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-02 20:51:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:44,562 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2022-11-02 20:51:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:51:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2022-11-02 20:51:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:44,565 INFO L225 Difference]: With dead ends: 80 [2022-11-02 20:51:44,565 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 20:51:44,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:51:44,566 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 58 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:44,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 91 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:51:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 20:51:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-11-02 20:51:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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) [2022-11-02 20:51:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2022-11-02 20:51:44,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 28 [2022-11-02 20:51:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:44,574 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2022-11-02 20:51:44,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-02 20:51:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2022-11-02 20:51:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:51:44,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:44,582 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:44,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:44,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:44,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1264431861, now seen corresponding path program 1 times [2022-11-02 20:51:44,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:44,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874098759] [2022-11-02 20:51:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:44,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:44,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:44,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:51:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:45,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:51:45,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:45,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:46,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:46,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874098759] [2022-11-02 20:51:46,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874098759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:46,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:46,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:51:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160096259] [2022-11-02 20:51:46,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:51:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:51:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:51:46,296 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2022-11-02 20:51:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:46,449 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2022-11-02 20:51:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:51:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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 51 [2022-11-02 20:51:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:46,450 INFO L225 Difference]: With dead ends: 81 [2022-11-02 20:51:46,450 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 20:51:46,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:51:46,452 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:46,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-11-02 20:51:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 20:51:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-02 20:51:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 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) [2022-11-02 20:51:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2022-11-02 20:51:46,459 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 51 [2022-11-02 20:51:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:46,459 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2022-11-02 20:51:46,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2022-11-02 20:51:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2022-11-02 20:51:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:51:46,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:46,461 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:51:46,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:46,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:46,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1687133687, now seen corresponding path program 2 times [2022-11-02 20:51:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734562359] [2022-11-02 20:51:46,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:51:46,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:46,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:46,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:46,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:51:47,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:51:47,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:47,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:51:47,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:47,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:47,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:47,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734562359] [2022-11-02 20:51:47,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734562359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:47,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:47,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:51:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647437528] [2022-11-02 20:51:47,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:51:47,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:51:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:51:47,612 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 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) [2022-11-02 20:51:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:47,700 INFO L93 Difference]: Finished difference Result 122 states and 168 transitions. [2022-11-02 20:51:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:51:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 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 51 [2022-11-02 20:51:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:47,702 INFO L225 Difference]: With dead ends: 122 [2022-11-02 20:51:47,703 INFO L226 Difference]: Without dead ends: 97 [2022-11-02 20:51:47,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:51:47,720 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:47,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 525 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-02 20:51:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-02 20:51:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2022-11-02 20:51:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 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) [2022-11-02 20:51:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 124 transitions. [2022-11-02 20:51:47,735 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 124 transitions. Word has length 51 [2022-11-02 20:51:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:47,736 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 124 transitions. [2022-11-02 20:51:47,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 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) [2022-11-02 20:51:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 124 transitions. [2022-11-02 20:51:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:51:47,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:47,738 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:47,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:47,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:51:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash 832826247, now seen corresponding path program 1 times [2022-11-02 20:51:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128073233] [2022-11-02 20:51:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:47,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:51:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:48,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-02 20:51:48,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:49,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:51:59,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:59,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128073233] [2022-11-02 20:51:59,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128073233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:59,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:59,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-02 20:51:59,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880727532] [2022-11-02 20:51:59,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:51:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:51:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:51:59,072 INFO L87 Difference]: Start difference. First operand 91 states and 124 transitions. Second operand has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 36 states have internal predecessors, (100), 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) [2022-11-02 20:52:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:01,031 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2022-11-02 20:52:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:52:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 36 states have internal predecessors, (100), 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 51 [2022-11-02 20:52:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:01,034 INFO L225 Difference]: With dead ends: 199 [2022-11-02 20:52:01,034 INFO L226 Difference]: Without dead ends: 197 [2022-11-02 20:52:01,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=461, Invalid=2295, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:52:01,037 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 415 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:01,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 684 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 154 Invalid, 0 Unknown, 418 Unchecked, 0.4s Time] [2022-11-02 20:52:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-02 20:52:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 154. [2022-11-02 20:52:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3790849673202614) internal successors, (211), 153 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) [2022-11-02 20:52:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-11-02 20:52:01,056 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 51 [2022-11-02 20:52:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:01,057 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-02 20:52:01,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 36 states have internal predecessors, (100), 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) [2022-11-02 20:52:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-11-02 20:52:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:52:01,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:01,059 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:01,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:52:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:01,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash -972612087, now seen corresponding path program 1 times [2022-11-02 20:52:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:01,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574578115] [2022-11-02 20:52:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:01,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:01,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:01,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:01,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:52:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:01,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:52:01,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:02,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:52:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:02,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:52:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574578115] [2022-11-02 20:52:02,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574578115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:52:02,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:52:02,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:52:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093238626] [2022-11-02 20:52:02,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:52:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:52:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:52:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:52:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:52:02,608 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2022-11-02 20:52:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:02,752 INFO L93 Difference]: Finished difference Result 197 states and 270 transitions. [2022-11-02 20:52:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:52:02,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 51 [2022-11-02 20:52:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:02,754 INFO L225 Difference]: With dead ends: 197 [2022-11-02 20:52:02,754 INFO L226 Difference]: Without dead ends: 154 [2022-11-02 20:52:02,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:52:02,756 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:02,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 205 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-02 20:52:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-02 20:52:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-02 20:52:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 states have internal predecessors, (207), 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) [2022-11-02 20:52:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2022-11-02 20:52:02,779 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 51 [2022-11-02 20:52:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:02,780 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2022-11-02 20:52:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2022-11-02 20:52:02,780 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2022-11-02 20:52:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:52:02,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:02,782 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:02,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:02,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:02,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash 323353157, now seen corresponding path program 1 times [2022-11-02 20:52:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:02,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675883407] [2022-11-02 20:52:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:03,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:03,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:52:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:03,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:52:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:52:03,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:52:03,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:52:03,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675883407] [2022-11-02 20:52:03,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675883407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:03,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:03,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:52:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594185366] [2022-11-02 20:52:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:03,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:52:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:52:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:52:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:52:03,431 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-02 20:52:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:03,507 INFO L93 Difference]: Finished difference Result 222 states and 298 transitions. [2022-11-02 20:52:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:52:03,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 51 [2022-11-02 20:52:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:03,509 INFO L225 Difference]: With dead ends: 222 [2022-11-02 20:52:03,509 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 20:52:03,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:03,510 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 38 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:03,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 109 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:52:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 20:52:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2022-11-02 20:52:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.326797385620915) internal successors, (203), 153 states have internal predecessors, (203), 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) [2022-11-02 20:52:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2022-11-02 20:52:03,525 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 51 [2022-11-02 20:52:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:03,525 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2022-11-02 20:52:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-02 20:52:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2022-11-02 20:52:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:52:03,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:03,528 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:52:03,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:03,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:03,751 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 810193993, now seen corresponding path program 1 times [2022-11-02 20:52:03,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:03,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128669857] [2022-11-02 20:52:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:03,755 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:03,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:52:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:04,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:52:04,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:52:04,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:52:04,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:52:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128669857] [2022-11-02 20:52:04,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128669857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:04,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:04,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:52:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181923994] [2022-11-02 20:52:04,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:52:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:52:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:52:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:52:04,176 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-02 20:52:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:04,276 INFO L93 Difference]: Finished difference Result 240 states and 315 transitions. [2022-11-02 20:52:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:52:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 51 [2022-11-02 20:52:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:04,281 INFO L225 Difference]: With dead ends: 240 [2022-11-02 20:52:04,281 INFO L226 Difference]: Without dead ends: 183 [2022-11-02 20:52:04,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:04,283 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:04,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 127 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:52:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-02 20:52:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 154. [2022-11-02 20:52:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3006535947712419) internal successors, (199), 153 states have internal predecessors, (199), 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) [2022-11-02 20:52:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2022-11-02 20:52:04,295 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 51 [2022-11-02 20:52:04,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:04,295 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2022-11-02 20:52:04,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-02 20:52:04,296 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2022-11-02 20:52:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:52:04,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:04,297 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:04,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:04,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash 438459461, now seen corresponding path program 1 times [2022-11-02 20:52:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445336966] [2022-11-02 20:52:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:04,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:04,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:04,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:52:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:04,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:52:04,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:52:04,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:52:04,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:52:04,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445336966] [2022-11-02 20:52:04,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445336966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:04,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:04,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:52:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357284424] [2022-11-02 20:52:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:52:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:52:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:52:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:52:04,940 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 20:52:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:05,005 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2022-11-02 20:52:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:52:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 51 [2022-11-02 20:52:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:05,008 INFO L225 Difference]: With dead ends: 179 [2022-11-02 20:52:05,008 INFO L226 Difference]: Without dead ends: 110 [2022-11-02 20:52:05,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:52:05,010 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 42 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:52:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-02 20:52:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-02 20:52:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.311926605504587) internal successors, (143), 109 states have internal predecessors, (143), 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) [2022-11-02 20:52:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2022-11-02 20:52:05,023 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 51 [2022-11-02 20:52:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2022-11-02 20:52:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-11-02 20:52:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2022-11-02 20:52:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:52:05,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:05,038 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:52:05,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:05,238 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash -586388383, now seen corresponding path program 1 times [2022-11-02 20:52:05,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592004607] [2022-11-02 20:52:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:05,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:05,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:05,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:52:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:05,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-02 20:52:05,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:08,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:52:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:17,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:52:17,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592004607] [2022-11-02 20:52:17,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592004607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:52:17,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:52:17,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2022-11-02 20:52:17,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275228851] [2022-11-02 20:52:17,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:52:17,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:52:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:52:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:52:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1620, Unknown=1, NotChecked=0, Total=1722 [2022-11-02 20:52:17,411 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 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) [2022-11-02 20:52:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:18,029 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2022-11-02 20:52:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:52:18,030 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 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 74 [2022-11-02 20:52:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:52:18,032 INFO L225 Difference]: With dead ends: 179 [2022-11-02 20:52:18,032 INFO L226 Difference]: Without dead ends: 154 [2022-11-02 20:52:18,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=124, Invalid=1945, Unknown=1, NotChecked=0, Total=2070 [2022-11-02 20:52:18,034 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:52:18,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 884 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 237 Unchecked, 0.0s Time] [2022-11-02 20:52:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-02 20:52:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2022-11-02 20:52:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2980132450331126) internal successors, (196), 151 states have internal predecessors, (196), 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) [2022-11-02 20:52:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 196 transitions. [2022-11-02 20:52:18,044 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 196 transitions. Word has length 74 [2022-11-02 20:52:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:52:18,044 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 196 transitions. [2022-11-02 20:52:18,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.0238095238095237) internal successors, (127), 42 states have internal predecessors, (127), 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) [2022-11-02 20:52:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 196 transitions. [2022-11-02 20:52:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:52:18,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:52:18,046 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-11-02 20:52:18,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:18,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:52:18,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:52:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:18,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1009090209, now seen corresponding path program 2 times [2022-11-02 20:52:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:52:18,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003710118] [2022-11-02 20:52:18,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:52:18,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:52:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:52:18,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:52:18,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:52:18,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:52:18,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:52:18,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-02 20:52:18,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:21,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:38,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:53:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003710118] [2022-11-02 20:53:38,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003710118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:38,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:53:38,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2022-11-02 20:53:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439529132] [2022-11-02 20:53:38,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:38,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-02 20:53:38,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:53:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-02 20:53:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3783, Unknown=12, NotChecked=0, Total=4032 [2022-11-02 20:53:38,857 INFO L87 Difference]: Start difference. First operand 152 states and 196 transitions. Second operand has 64 states, 64 states have (on average 2.28125) internal successors, (146), 64 states have internal predecessors, (146), 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) [2022-11-02 20:53:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:42,020 INFO L93 Difference]: Finished difference Result 310 states and 405 transitions. [2022-11-02 20:53:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:53:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.28125) internal successors, (146), 64 states have internal predecessors, (146), 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 74 [2022-11-02 20:53:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:42,028 INFO L225 Difference]: With dead ends: 310 [2022-11-02 20:53:42,028 INFO L226 Difference]: Without dead ends: 308 [2022-11-02 20:53:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 80.6s TimeCoverageRelationStatistics Valid=530, Invalid=6430, Unknown=12, NotChecked=0, Total=6972 [2022-11-02 20:53:42,031 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 208 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 973 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:42,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1510 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 973 Unchecked, 0.4s Time] [2022-11-02 20:53:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-02 20:53:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 242. [2022-11-02 20:53:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.2987551867219918) internal successors, (313), 241 states have internal predecessors, (313), 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) [2022-11-02 20:53:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 313 transitions. [2022-11-02 20:53:42,049 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 313 transitions. Word has length 74 [2022-11-02 20:53:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:42,050 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 313 transitions. [2022-11-02 20:53:42,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.28125) internal successors, (146), 64 states have internal predecessors, (146), 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) [2022-11-02 20:53:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 313 transitions. [2022-11-02 20:53:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:53:42,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:42,052 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:42,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:42,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:53:42,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1480438753, now seen corresponding path program 2 times [2022-11-02 20:53:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:53:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913612284] [2022-11-02 20:53:42,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:53:42,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:53:42,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:53:42,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:53:42,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:53:42,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:53:42,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:53:42,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-02 20:53:42,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:45,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:53:54,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:53:54,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913612284] [2022-11-02 20:53:54,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913612284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:54,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:53:54,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2022-11-02 20:53:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68795221] [2022-11-02 20:53:54,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:54,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:53:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:53:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:53:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1620, Unknown=1, NotChecked=0, Total=1722 [2022-11-02 20:53:54,489 INFO L87 Difference]: Start difference. First operand 242 states and 313 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 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) [2022-11-02 20:53:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:54,793 INFO L93 Difference]: Finished difference Result 271 states and 352 transitions. [2022-11-02 20:53:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:53:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 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 74 [2022-11-02 20:53:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:54,794 INFO L225 Difference]: With dead ends: 271 [2022-11-02 20:53:54,795 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:53:54,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=115, Invalid=1776, Unknown=1, NotChecked=0, Total=1892 [2022-11-02 20:53:54,796 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 18 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:54,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 981 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 172 Unchecked, 0.0s Time] [2022-11-02 20:53:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:53:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2022-11-02 20:53:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.2966101694915255) internal successors, (306), 236 states have internal predecessors, (306), 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) [2022-11-02 20:53:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 306 transitions. [2022-11-02 20:53:54,812 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 306 transitions. Word has length 74 [2022-11-02 20:53:54,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:54,812 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 306 transitions. [2022-11-02 20:53:54,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 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) [2022-11-02 20:53:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 306 transitions. [2022-11-02 20:53:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:53:54,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:54,814 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:54,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:55,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:53:55,034 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1403456995, now seen corresponding path program 2 times [2022-11-02 20:53:55,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:53:55,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779571597] [2022-11-02 20:53:55,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:53:55,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:53:55,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:53:55,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:53:55,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:53:55,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:53:55,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:53:55,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:53:55,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:53:56,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:53:56,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:53:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779571597] [2022-11-02 20:53:56,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779571597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:56,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:53:56,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:53:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007405416] [2022-11-02 20:53:56,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:53:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:53:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:53:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:53:56,479 INFO L87 Difference]: Start difference. First operand 237 states and 306 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2022-11-02 20:53:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:56,719 INFO L93 Difference]: Finished difference Result 319 states and 415 transitions. [2022-11-02 20:53:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:53:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 74 [2022-11-02 20:53:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:56,722 INFO L225 Difference]: With dead ends: 319 [2022-11-02 20:53:56,723 INFO L226 Difference]: Without dead ends: 262 [2022-11-02 20:53:56,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:53:56,724 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:56,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 216 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-02 20:53:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-02 20:53:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2022-11-02 20:53:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.2709163346613546) internal successors, (319), 251 states have internal predecessors, (319), 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) [2022-11-02 20:53:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 319 transitions. [2022-11-02 20:53:56,741 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 319 transitions. Word has length 74 [2022-11-02 20:53:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:56,742 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 319 transitions. [2022-11-02 20:53:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2022-11-02 20:53:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 319 transitions. [2022-11-02 20:53:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:53:56,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:56,744 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:56,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:56,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:53:56,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -760943715, now seen corresponding path program 1 times [2022-11-02 20:53:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:53:56,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133537112] [2022-11-02 20:53:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:56,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:53:56,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:53:56,954 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:53:56,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:53:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:57,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:53:57,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:53:57,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:53:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:53:58,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:53:58,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133537112] [2022-11-02 20:53:58,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133537112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:53:58,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:53:58,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:53:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830178462] [2022-11-02 20:53:58,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:53:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:53:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:53:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:53:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:53:58,284 INFO L87 Difference]: Start difference. First operand 252 states and 319 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) [2022-11-02 20:53:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:58,591 INFO L93 Difference]: Finished difference Result 328 states and 425 transitions. [2022-11-02 20:53:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:53:58,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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 74 [2022-11-02 20:53:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:58,594 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:53:58,594 INFO L226 Difference]: Without dead ends: 253 [2022-11-02 20:53:58,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:53:58,595 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 46 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:58,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 242 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2022-11-02 20:53:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-02 20:53:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2022-11-02 20:53:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.2521739130434784) internal successors, (288), 230 states have internal predecessors, (288), 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) [2022-11-02 20:53:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 288 transitions. [2022-11-02 20:53:58,628 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 288 transitions. Word has length 74 [2022-11-02 20:53:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:58,628 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 288 transitions. [2022-11-02 20:53:58,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 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) [2022-11-02 20:53:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 288 transitions. [2022-11-02 20:53:58,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:53:58,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:58,630 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:58,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:58,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:53:58,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1130909467, now seen corresponding path program 1 times [2022-11-02 20:53:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:53:58,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467318121] [2022-11-02 20:53:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:53:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:53:58,853 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:53:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:53:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:59,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:53:59,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:53:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:53:59,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:53:59,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:53:59,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467318121] [2022-11-02 20:53:59,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467318121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:59,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:59,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:53:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623363643] [2022-11-02 20:53:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:53:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:53:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:53:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:53:59,376 INFO L87 Difference]: Start difference. First operand 231 states and 288 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-11-02 20:53:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:59,453 INFO L93 Difference]: Finished difference Result 387 states and 484 transitions. [2022-11-02 20:53:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:53:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 74 [2022-11-02 20:53:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:53:59,455 INFO L225 Difference]: With dead ends: 387 [2022-11-02 20:53:59,455 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 20:53:59,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:53:59,456 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 37 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:53:59,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 99 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:53:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 20:53:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2022-11-02 20:53:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.2304347826086957) internal successors, (283), 230 states have internal predecessors, (283), 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) [2022-11-02 20:53:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 283 transitions. [2022-11-02 20:53:59,471 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 283 transitions. Word has length 74 [2022-11-02 20:53:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:53:59,472 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 283 transitions. [2022-11-02 20:53:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2022-11-02 20:53:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 283 transitions. [2022-11-02 20:53:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:53:59,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:53:59,474 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:53:59,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:53:59,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:53:59,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:53:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1375186275, now seen corresponding path program 1 times [2022-11-02 20:53:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:53:59,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726583347] [2022-11-02 20:53:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:59,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:53:59,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:53:59,698 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:53:59,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:54:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:00,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:54:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:54:00,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:00,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726583347] [2022-11-02 20:54:00,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726583347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:00,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:00,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339376420] [2022-11-02 20:54:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:00,201 INFO L87 Difference]: Start difference. First operand 231 states and 283 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-11-02 20:54:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:00,276 INFO L93 Difference]: Finished difference Result 267 states and 333 transitions. [2022-11-02 20:54:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 74 [2022-11-02 20:54:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:00,278 INFO L225 Difference]: With dead ends: 267 [2022-11-02 20:54:00,278 INFO L226 Difference]: Without dead ends: 175 [2022-11-02 20:54:00,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:00,279 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 96 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-02 20:54:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-02 20:54:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.2413793103448276) internal successors, (216), 174 states have internal predecessors, (216), 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) [2022-11-02 20:54:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2022-11-02 20:54:00,287 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 74 [2022-11-02 20:54:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:00,288 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2022-11-02 20:54:00,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-11-02 20:54:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2022-11-02 20:54:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:54:00,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:00,289 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:00,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:00,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:00,499 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1485743973, now seen corresponding path program 1 times [2022-11-02 20:54:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:00,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681641087] [2022-11-02 20:54:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:00,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:00,503 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:54:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:00,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:54:00,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:54:00,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:00,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:00,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681641087] [2022-11-02 20:54:00,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681641087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:00,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:00,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543208399] [2022-11-02 20:54:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:00,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:00,967 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-02 20:54:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:01,027 INFO L93 Difference]: Finished difference Result 261 states and 329 transitions. [2022-11-02 20:54:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:01,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 74 [2022-11-02 20:54:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:01,028 INFO L225 Difference]: With dead ends: 261 [2022-11-02 20:54:01,028 INFO L226 Difference]: Without dead ends: 142 [2022-11-02 20:54:01,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:01,029 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 39 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:01,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 94 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-02 20:54:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-02 20:54:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.24822695035461) internal successors, (176), 141 states have internal predecessors, (176), 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) [2022-11-02 20:54:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 176 transitions. [2022-11-02 20:54:01,039 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 176 transitions. Word has length 74 [2022-11-02 20:54:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:01,039 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 176 transitions. [2022-11-02 20:54:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-11-02 20:54:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 176 transitions. [2022-11-02 20:54:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 20:54:01,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:01,041 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:01,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 20:54:01,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:01,259 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash 239592995, now seen corresponding path program 1 times [2022-11-02 20:54:01,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:01,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511192151] [2022-11-02 20:54:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:01,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:01,263 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:01,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:54:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:01,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:54:01,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:54:01,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:01,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:01,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511192151] [2022-11-02 20:54:01,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511192151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:01,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:01,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206864681] [2022-11-02 20:54:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:01,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:01,767 INFO L87 Difference]: Start difference. First operand 142 states and 176 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-02 20:54:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:01,837 INFO L93 Difference]: Finished difference Result 186 states and 238 transitions. [2022-11-02 20:54:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 74 [2022-11-02 20:54:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:01,839 INFO L225 Difference]: With dead ends: 186 [2022-11-02 20:54:01,839 INFO L226 Difference]: Without dead ends: 98 [2022-11-02 20:54:01,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:54:01,842 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:01,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 93 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-02 20:54:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-02 20:54:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2577319587628866) internal successors, (122), 97 states have internal predecessors, (122), 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) [2022-11-02 20:54:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2022-11-02 20:54:01,859 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 122 transitions. Word has length 74 [2022-11-02 20:54:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:01,859 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 122 transitions. [2022-11-02 20:54:01,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-02 20:54:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 122 transitions. [2022-11-02 20:54:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 20:54:01,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:01,861 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:01,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:02,081 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:54:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1215380599, now seen corresponding path program 2 times [2022-11-02 20:54:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:02,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432741911] [2022-11-02 20:54:02,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:54:02,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:02,086 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:02,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61612916-bb78-49b2-b739-938812d54289/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:54:02,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:54:02,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:54:02,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 198 conjunts are in the unsatisfiable core [2022-11-02 20:54:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 59 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:54:10,916 INFO L328 TraceCheckSpWp]: Computing backward predicates...