./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.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_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/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_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/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_ebdc5698-9516-43a8-acac-6760806fa17b/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 08891daee860d4f5c8b9eb372c77be9c8f68c10ee67e3866dfab61bc12575d92 --- 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 19:53:07,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:53:07,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:53:07,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:53:07,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:53:07,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:53:07,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:53:07,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:53:07,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:53:07,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:53:07,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:53:07,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:53:07,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:53:07,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:53:07,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:53:07,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:53:07,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:53:07,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:53:07,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:53:07,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:53:07,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:53:07,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:53:07,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:53:07,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:53:07,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:53:07,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:53:07,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:53:07,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:53:07,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:53:07,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:53:07,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:53:07,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:53:07,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:53:07,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:53:07,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:53:07,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:53:07,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:53:07,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:53:07,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:53:07,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:53:07,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:53:07,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:53:07,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:53:07,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:53:07,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:53:07,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:53:07,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:53:07,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:53:07,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:53:07,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:53:07,533 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:53:07,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:53:07,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:53:07,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:53:07,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:53:07,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:53:07,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:53:07,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:53:07,536 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:53:07,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:53:07,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:53:07,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:53:07,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:53:07,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:07,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:53:07,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:53:07,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:53:07,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:53:07,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:53:07,541 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:53:07,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:53:07,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:53:07,541 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_ebdc5698-9516-43a8-acac-6760806fa17b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08891daee860d4f5c8b9eb372c77be9c8f68c10ee67e3866dfab61bc12575d92 [2022-11-02 19:53:07,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:53:07,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:53:07,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:53:07,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:53:07,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:53:07,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c [2022-11-02 19:53:08,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/85e210d47/149480ce56294880a35695c638ea9f24/FLAG7b5040f2b [2022-11-02 19:53:08,627 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:53:08,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c [2022-11-02 19:53:08,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/85e210d47/149480ce56294880a35695c638ea9f24/FLAG7b5040f2b [2022-11-02 19:53:08,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/85e210d47/149480ce56294880a35695c638ea9f24 [2022-11-02 19:53:08,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:53:08,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:53:08,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:08,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:53:08,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:53:08,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:08" (1/1) ... [2022-11-02 19:53:08,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459482c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:08, skipping insertion in model container [2022-11-02 19:53:08,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:08" (1/1) ... [2022-11-02 19:53:08,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:53:09,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:53:09,178 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_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c[1107,1120] [2022-11-02 19:53:09,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:09,271 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:53:09,283 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_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c[1107,1120] [2022-11-02 19:53:09,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:09,337 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:53:09,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09 WrapperNode [2022-11-02 19:53:09,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:09,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:09,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:53:09,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:53:09,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,407 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 234 [2022-11-02 19:53:09,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:09,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:53:09,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:53:09,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:53:09,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:53:09,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:53:09,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:53:09,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:53:09,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (1/1) ... [2022-11-02 19:53:09,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:09,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:53:09,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:53:09,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:53:09,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:53:09,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:53:09,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:53:10,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:53:10,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:53:10,312 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:53:10,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:10 BoogieIcfgContainer [2022-11-02 19:53:10,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:53:10,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:53:10,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:53:10,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:53:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:53:08" (1/3) ... [2022-11-02 19:53:10,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd040bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:10, skipping insertion in model container [2022-11-02 19:53:10,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:09" (2/3) ... [2022-11-02 19:53:10,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd040bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:10, skipping insertion in model container [2022-11-02 19:53:10,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:10" (3/3) ... [2022-11-02 19:53:10,330 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal55.c [2022-11-02 19:53:10,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:53:10,354 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:53:10,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:53:10,447 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;@35057bfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:53:10,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:53:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 19:53:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:10,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:10,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:10,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 19:53:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:10,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377636908] [2022-11-02 19:53:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:11,275 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 19:53:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:11,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377636908] [2022-11-02 19:53:11,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377636908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:11,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:11,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612995059] [2022-11-02 19:53:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:11,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:11,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:11,326 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:11,442 INFO L93 Difference]: Finished difference Result 106 states and 158 transitions. [2022-11-02 19:53:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:53:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 19:53:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:11,467 INFO L225 Difference]: With dead ends: 106 [2022-11-02 19:53:11,468 INFO L226 Difference]: Without dead ends: 69 [2022-11-02 19:53:11,471 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 19:53:11,480 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 90 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:11,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-02 19:53:11,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2022-11-02 19:53:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 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 19:53:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 19:53:11,528 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 19:53:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 19:53:11,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 19:53:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:11,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:11,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:11,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:53:11,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 19:53:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:11,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094856413] [2022-11-02 19:53:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:11,919 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 19:53:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:11,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094856413] [2022-11-02 19:53:11,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094856413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:11,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:11,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494557755] [2022-11-02 19:53:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:11,923 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:12,003 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2022-11-02 19:53:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:53:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 19:53:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:12,005 INFO L225 Difference]: With dead ends: 104 [2022-11-02 19:53:12,005 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 19:53:12,006 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 19:53:12,007 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:12,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 138 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 19:53:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2022-11-02 19:53:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 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 19:53:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 19:53:12,014 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 19:53:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:12,014 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 19:53:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 19:53:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:12,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:12,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:53:12,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 19:53:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:12,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474771613] [2022-11-02 19:53:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:53:12,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:53:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:53:12,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:53:12,448 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:53:12,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:53:12,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:53:12,456 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 19:53:12,460 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:53:12,487 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:53:12,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:53:12 BoogieIcfgContainer [2022-11-02 19:53:12,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:53:12,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:53:12,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:53:12,500 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:53:12,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:10" (3/4) ... [2022-11-02 19:53:12,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:53:12,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:53:12,505 INFO L158 Benchmark]: Toolchain (without parser) took 3535.54ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 60.0MB in the beginning and 90.7MB in the end (delta: -30.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,506 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:53:12,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.76ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 67.5MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.88ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 63.8MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,508 INFO L158 Benchmark]: Boogie Preprocessor took 49.97ms. Allocated memory is still 94.4MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,509 INFO L158 Benchmark]: RCFGBuilder took 855.58ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 61.7MB in the beginning and 105.2MB in the end (delta: -43.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,509 INFO L158 Benchmark]: TraceAbstraction took 2181.55ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 90.7MB in the end (delta: 13.8MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2022-11-02 19:53:12,510 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 130.0MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:53:12,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.76ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 67.5MB in the end (delta: -7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.88ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 63.8MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.97ms. Allocated memory is still 94.4MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 855.58ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 61.7MB in the beginning and 105.2MB in the end (delta: -43.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2181.55ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 90.7MB in the end (delta: 13.8MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 130.0MB. Free memory is still 90.7MB. 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 118, overapproximation of bitwiseOr at line 107, overapproximation of bitwiseAnd at line 101. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L31] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 2); [L32] const SORT_26 msb_SORT_26 = (SORT_26)1 << (2 - 1); [L34] const SORT_1 var_11 = 0; [L35] const SORT_5 var_15 = 0; [L36] const SORT_5 var_21 = 5; [L37] const SORT_5 var_23 = 4; [L38] const SORT_1 var_39 = 1; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_5 input_6; [L44] SORT_5 input_7; [L45] SORT_1 input_8; [L46] SORT_5 input_9; [L47] SORT_5 input_10; [L49] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_5 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L54] SORT_1 init_13_arg_1 = var_11; [L55] state_12 = init_13_arg_1 [L56] SORT_5 init_17_arg_1 = var_15; [L57] state_16 = init_17_arg_1 [L58] SORT_1 init_19_arg_1 = var_11; [L59] state_18 = init_19_arg_1 [L60] SORT_5 init_30_arg_1 = var_15; [L61] state_29 = init_30_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_15=0, var_21=5, var_23=4, var_39=1] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_2 = input_2 & mask_SORT_1 [L66] input_3 = __VERIFIER_nondet_uchar() [L67] input_3 = input_3 & mask_SORT_1 [L68] input_4 = __VERIFIER_nondet_uchar() [L69] input_6 = __VERIFIER_nondet_uchar() [L70] input_7 = __VERIFIER_nondet_uchar() [L71] input_8 = __VERIFIER_nondet_uchar() [L72] input_9 = __VERIFIER_nondet_uchar() [L73] input_10 = __VERIFIER_nondet_uchar() [L76] SORT_1 var_14_arg_0 = state_12; [L77] SORT_1 var_14 = ~var_14_arg_0; [L78] SORT_1 var_20_arg_0 = state_18; [L79] SORT_5 var_20_arg_1 = state_16; [L80] SORT_5 var_20_arg_2 = input_7; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=5, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=5, var_21=5, var_23=4, var_39=1] [L81] EXPR var_20_arg_0 ? var_20_arg_1 : var_20_arg_2 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=5, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20_arg_0=0, var_20_arg_0 ? var_20_arg_1 : var_20_arg_2=5, var_20_arg_1=0, var_20_arg_2=5, var_21=5, var_23=4, var_39=1] [L81] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; [L82] var_20 = var_20 & mask_SORT_5 [L83] SORT_5 var_24_arg_0 = var_20; [L84] SORT_5 var_24_arg_1 = var_23; [L85] SORT_1 var_24 = var_24_arg_0 == var_24_arg_1; [L86] SORT_1 var_25_arg_0 = var_24; [L87] SORT_1 var_25 = ~var_25_arg_0; [L88] SORT_5 var_22_arg_0 = var_20; [L89] SORT_5 var_22_arg_1 = var_21; [L90] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L91] SORT_1 var_27_arg_0 = var_25; [L92] SORT_1 var_27_arg_1 = var_22; [L93] SORT_26 var_27 = ((SORT_26)var_27_arg_0 << 1) | var_27_arg_1; [L94] var_27 = var_27 & mask_SORT_26 [L95] SORT_26 var_28_arg_0 = var_27; [L96] SORT_1 var_28 = var_28_arg_0 == mask_SORT_26; [L97] SORT_1 var_31_arg_0 = state_18; [L98] SORT_5 var_31_arg_1 = state_29; [L99] SORT_5 var_31_arg_2 = input_7; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=5, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=5, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=5, var_21=5, var_22=1, var_22_arg_0=5, var_22_arg_1=5, var_23=4, var_24=0, var_24_arg_0=5, var_24_arg_1=4, var_25=128, var_25_arg_0=0, var_27=0, var_27_arg_0=128, var_27_arg_1=1, var_28=0, var_28_arg_0=0, var_31_arg_0=0, var_31_arg_1=0, var_31_arg_2=5, var_39=1] [L100] EXPR var_31_arg_0 ? var_31_arg_1 : var_31_arg_2 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_30_arg_1=0, input_10=2, input_2=1, input_3=0, input_4=5, input_6=4, input_7=5, input_8=3, input_9=1, mask_SORT_1=1, mask_SORT_26=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_26=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_29=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=5, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=5, var_21=5, var_22=1, var_22_arg_0=5, var_22_arg_1=5, var_23=4, var_24=0, var_24_arg_0=5, var_24_arg_1=4, var_25=128, var_25_arg_0=0, var_27=0, var_27_arg_0=128, var_27_arg_1=1, var_28=0, var_28_arg_0=0, var_31_arg_0=0, var_31_arg_0 ? var_31_arg_1 : var_31_arg_2=5, var_31_arg_1=0, var_31_arg_2=5, var_39=1] [L100] SORT_5 var_31 = var_31_arg_0 ? var_31_arg_1 : var_31_arg_2; [L101] var_31 = var_31 & mask_SORT_5 [L102] SORT_5 var_32_arg_0 = var_31; [L103] SORT_5 var_32_arg_1 = var_21; [L104] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L105] SORT_1 var_33_arg_0 = var_25; [L106] SORT_1 var_33_arg_1 = var_32; [L107] SORT_26 var_33 = ((SORT_26)var_33_arg_0 << 1) | var_33_arg_1; [L108] var_33 = var_33 & mask_SORT_26 [L109] SORT_26 var_34_arg_0 = var_33; [L110] SORT_1 var_34 = var_34_arg_0 == mask_SORT_26; [L111] SORT_1 var_35_arg_0 = var_28; [L112] SORT_1 var_35_arg_1 = var_34; [L113] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L114] SORT_1 var_36_arg_0 = var_14; [L115] SORT_1 var_36_arg_1 = var_35; [L116] SORT_1 var_36 = var_36_arg_0 | var_36_arg_1; [L117] SORT_1 var_40_arg_0 = var_36; [L118] SORT_1 var_40 = ~var_40_arg_0; [L119] SORT_1 var_41_arg_0 = var_39; [L120] SORT_1 var_41_arg_1 = var_40; [L121] SORT_1 var_41 = var_41_arg_0 & var_41_arg_1; [L122] var_41 = var_41 & mask_SORT_1 [L123] SORT_1 bad_42_arg_0 = var_41; [L124] CALL __VERIFIER_assert(!(bad_42_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, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 275 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 96 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 19:53:12,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/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_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/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_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/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_ebdc5698-9516-43a8-acac-6760806fa17b/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 08891daee860d4f5c8b9eb372c77be9c8f68c10ee67e3866dfab61bc12575d92 --- 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 19:53:15,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:53:15,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:53:15,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:53:15,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:53:15,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:53:15,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:53:15,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:53:15,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:53:15,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:53:15,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:53:15,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:53:15,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:53:15,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:53:15,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:53:15,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:53:15,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:53:15,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:53:15,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:53:15,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:53:15,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:53:15,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:53:15,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:53:15,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:53:15,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:53:15,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:53:15,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:53:15,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:53:15,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:53:15,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:53:15,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:53:15,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:53:15,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:53:15,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:53:15,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:53:15,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:53:15,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:53:15,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:53:15,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:53:15,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:53:15,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:53:15,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:53:15,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:53:15,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:53:15,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:53:15,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:53:15,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:53:15,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:53:15,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:53:15,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:53:15,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:53:15,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:53:15,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:53:15,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:53:15,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:53:15,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:53:15,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:53:15,349 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:53:15,349 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:53:15,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:53:15,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:53:15,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:53:15,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:53:15,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:53:15,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:53:15,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:15,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:53:15,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:53:15,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:53:15,352 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:53:15,353 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:53:15,353 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:53:15,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:53:15,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:53:15,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:53:15,354 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_ebdc5698-9516-43a8-acac-6760806fa17b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08891daee860d4f5c8b9eb372c77be9c8f68c10ee67e3866dfab61bc12575d92 [2022-11-02 19:53:15,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:53:15,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:53:15,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:53:15,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:53:15,876 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:53:15,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c [2022-11-02 19:53:15,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/537724fa6/6a6823edeaba4234917916e698a97d23/FLAG626787f12 [2022-11-02 19:53:16,544 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:53:16,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c [2022-11-02 19:53:16,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/537724fa6/6a6823edeaba4234917916e698a97d23/FLAG626787f12 [2022-11-02 19:53:16,868 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/data/537724fa6/6a6823edeaba4234917916e698a97d23 [2022-11-02 19:53:16,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:53:16,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:53:16,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:16,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:53:16,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:53:16,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:16" (1/1) ... [2022-11-02 19:53:16,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cd002b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:16, skipping insertion in model container [2022-11-02 19:53:16,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:16" (1/1) ... [2022-11-02 19:53:16,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:53:16,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:53:17,051 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_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c[1107,1120] [2022-11-02 19:53:17,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:17,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:53:17,198 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_ebdc5698-9516-43a8-acac-6760806fa17b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal55.c[1107,1120] [2022-11-02 19:53:17,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:17,253 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:53:17,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17 WrapperNode [2022-11-02 19:53:17,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:17,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:17,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:53:17,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:53:17,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,309 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 234 [2022-11-02 19:53:17,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:17,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:53:17,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:53:17,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:53:17,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:53:17,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:53:17,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:53:17,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:53:17,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (1/1) ... [2022-11-02 19:53:17,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:17,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:53:17,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:53:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:53:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:53:17,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:53:17,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:53:18,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:53:18,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:53:18,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:53:18,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:18 BoogieIcfgContainer [2022-11-02 19:53:18,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:53:18,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:53:18,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:53:18,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:53:18,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:53:16" (1/3) ... [2022-11-02 19:53:18,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425dbc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:18, skipping insertion in model container [2022-11-02 19:53:18,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:17" (2/3) ... [2022-11-02 19:53:18,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425dbc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:53:18, skipping insertion in model container [2022-11-02 19:53:18,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:53:18" (3/3) ... [2022-11-02 19:53:18,242 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal55.c [2022-11-02 19:53:18,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:53:18,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:53:18,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:53:18,371 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;@38143c4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:53:18,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:53:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 19:53:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:18,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:18,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:18,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 19:53:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:18,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214926148] [2022-11-02 19:53:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:18,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:18,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:18,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:53:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:53:18,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:18,709 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 19:53:18,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:18,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:18,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214926148] [2022-11-02 19:53:18,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214926148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:18,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:18,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:18,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880368520] [2022-11-02 19:53:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:18,757 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 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 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:18,834 INFO L93 Difference]: Finished difference Result 137 states and 203 transitions. [2022-11-02 19:53:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:53:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 19:53:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:18,846 INFO L225 Difference]: With dead ends: 137 [2022-11-02 19:53:18,847 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 19:53:18,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 19:53:18,854 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 134 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:18,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 179 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:18,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 19:53:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 37. [2022-11-02 19:53:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 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 19:53:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 19:53:18,933 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 19:53:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:18,934 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 19:53:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 19:53:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:18,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:18,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:18,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:19,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 19:53:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:19,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495668387] [2022-11-02 19:53:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:19,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:19,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:19,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:19,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:53:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:53:19,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:19,343 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 19:53:19,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:19,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495668387] [2022-11-02 19:53:19,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495668387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:19,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:19,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433482980] [2022-11-02 19:53:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:19,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:19,356 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:19,425 INFO L93 Difference]: Finished difference Result 133 states and 187 transitions. [2022-11-02 19:53:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:53:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-02 19:53:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:19,428 INFO L225 Difference]: With dead ends: 133 [2022-11-02 19:53:19,428 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 19:53:19,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 19:53:19,430 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 128 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:19,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 19:53:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 39. [2022-11-02 19:53:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 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 19:53:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 19:53:19,440 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 19:53:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:19,440 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 19:53:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 19:53:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 19:53:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:53:19,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:19,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:19,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:19,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:19,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 19:53:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:19,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280313575] [2022-11-02 19:53:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:19,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:19,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:19,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:53:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:53:19,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:19,989 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 19:53:19,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:19,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:19,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280313575] [2022-11-02 19:53:19,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280313575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:19,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:19,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:53:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247793113] [2022-11-02 19:53:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:53:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:53:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:53:20,003 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 19:53:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:20,123 INFO L93 Difference]: Finished difference Result 73 states and 101 transitions. [2022-11-02 19:53:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-02 19:53:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:20,125 INFO L225 Difference]: With dead ends: 73 [2022-11-02 19:53:20,125 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 19:53:20,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:53:20,126 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 124 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:20,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 180 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 19:53:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 41. [2022-11-02 19:53:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 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 19:53:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-11-02 19:53:20,135 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 9 [2022-11-02 19:53:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:20,136 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-11-02 19:53:20,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 19:53:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-11-02 19:53:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:20,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:20,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:20,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1250611463, now seen corresponding path program 1 times [2022-11-02 19:53:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:20,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358841128] [2022-11-02 19:53:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:20,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:20,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:53:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:20,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:53:20,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:20,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:20,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358841128] [2022-11-02 19:53:20,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358841128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:20,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:20,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62510979] [2022-11-02 19:53:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:20,633 INFO L87 Difference]: Start difference. First operand 41 states and 55 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 19:53:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:20,678 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2022-11-02 19:53:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:20,679 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 40 [2022-11-02 19:53:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:20,680 INFO L225 Difference]: With dead ends: 81 [2022-11-02 19:53:20,680 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 19:53:20,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 19:53:20,682 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 79 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:20,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 19:53:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-11-02 19:53:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 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 19:53:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2022-11-02 19:53:20,696 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 40 [2022-11-02 19:53:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:20,696 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2022-11-02 19:53:20,697 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 19:53:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2022-11-02 19:53:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:20,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:20,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:20,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-02 19:53:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1110062853, now seen corresponding path program 1 times [2022-11-02 19:53:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407897655] [2022-11-02 19:53:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:20,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:20,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:20,919 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:20,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:53:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:53:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:21,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:21,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407897655] [2022-11-02 19:53:21,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407897655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:21,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:21,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:21,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299992351] [2022-11-02 19:53:21,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:21,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:21,167 INFO L87 Difference]: Start difference. First operand 41 states and 54 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 19:53:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:21,212 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2022-11-02 19:53:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:21,213 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 40 [2022-11-02 19:53:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:21,216 INFO L225 Difference]: With dead ends: 85 [2022-11-02 19:53:21,216 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 19:53:21,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 19:53:21,221 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:21,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 82 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 19:53:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-11-02 19:53:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 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 19:53:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-11-02 19:53:21,241 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 40 [2022-11-02 19:53:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:21,242 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-11-02 19:53:21,243 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 19:53:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-11-02 19:53:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:21,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:21,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:21,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:21,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:21,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -687361027, now seen corresponding path program 1 times [2022-11-02 19:53:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454853455] [2022-11-02 19:53:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:21,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:21,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:53:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:53:21,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:21,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:21,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454853455] [2022-11-02 19:53:21,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454853455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:21,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:21,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:53:21,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419340867] [2022-11-02 19:53:21,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:21,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:53:21,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:53:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:53:21,717 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 19:53:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:21,825 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-11-02 19:53:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:53:21,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 40 [2022-11-02 19:53:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:21,827 INFO L225 Difference]: With dead ends: 120 [2022-11-02 19:53:21,827 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 19:53:21,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:53:21,829 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 108 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 182 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 19:53:21,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 182 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 19:53:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2022-11-02 19:53:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 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 19:53:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-11-02 19:53:21,837 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 40 [2022-11-02 19:53:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:21,837 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-11-02 19:53:21,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 19:53:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-11-02 19:53:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:21,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:21,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:21,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:22,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:22,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1001582715, now seen corresponding path program 1 times [2022-11-02 19:53:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:22,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052590944] [2022-11-02 19:53:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:22,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:22,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:53:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:22,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:53:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:22,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:22,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:22,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052590944] [2022-11-02 19:53:22,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052590944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:22,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:22,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793157685] [2022-11-02 19:53:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:22,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:22,286 INFO L87 Difference]: Start difference. First operand 55 states and 71 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 19:53:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:22,323 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2022-11-02 19:53:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:22,325 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 40 [2022-11-02 19:53:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:22,326 INFO L225 Difference]: With dead ends: 95 [2022-11-02 19:53:22,326 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 19:53:22,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 19:53:22,328 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 61 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:22,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 103 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 19:53:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-11-02 19:53:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 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 19:53:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-02 19:53:22,353 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 40 [2022-11-02 19:53:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:22,356 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-02 19:53:22,356 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 19:53:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-02 19:53:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:22,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:22,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:22,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:22,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:22,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1702647293, now seen corresponding path program 1 times [2022-11-02 19:53:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:22,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948962762] [2022-11-02 19:53:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:22,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:22,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:22,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:22,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:53:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:53:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:22,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:23,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948962762] [2022-11-02 19:53:23,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948962762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:23,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:23,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 19:53:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730933715] [2022-11-02 19:53:23,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:23,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 19:53:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 19:53:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:53:23,124 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 19:53:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:23,558 INFO L93 Difference]: Finished difference Result 188 states and 247 transitions. [2022-11-02 19:53:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:53:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 40 [2022-11-02 19:53:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:23,560 INFO L225 Difference]: With dead ends: 188 [2022-11-02 19:53:23,560 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 19:53:23,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:23,561 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 438 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:23,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 366 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:53:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 19:53:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 68. [2022-11-02 19:53:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 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 19:53:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2022-11-02 19:53:23,570 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 40 [2022-11-02 19:53:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:23,571 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2022-11-02 19:53:23,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 19:53:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2022-11-02 19:53:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:23,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:23,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:23,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-02 19:53:23,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:23,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1759905595, now seen corresponding path program 1 times [2022-11-02 19:53:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:23,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087080786] [2022-11-02 19:53:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:23,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:23,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:23,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:53:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:23,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:53:23,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:24,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:24,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087080786] [2022-11-02 19:53:24,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087080786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:24,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:24,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 19:53:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534554822] [2022-11-02 19:53:24,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:24,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 19:53:24,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 19:53:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:53:24,259 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 19:53:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:24,680 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2022-11-02 19:53:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:53:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 40 [2022-11-02 19:53:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:24,682 INFO L225 Difference]: With dead ends: 203 [2022-11-02 19:53:24,682 INFO L226 Difference]: Without dead ends: 157 [2022-11-02 19:53:24,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:24,684 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 441 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:24,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 362 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:53:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-02 19:53:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 70. [2022-11-02 19:53:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.289855072463768) internal successors, (89), 69 states have internal predecessors, (89), 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 19:53:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2022-11-02 19:53:24,702 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 40 [2022-11-02 19:53:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2022-11-02 19:53:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 19:53:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2022-11-02 19:53:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 19:53:24,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:24,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:24,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:24,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1759965177, now seen corresponding path program 1 times [2022-11-02 19:53:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:24,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881973056] [2022-11-02 19:53:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:24,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:24,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:24,922 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:24,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:53:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:25,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 19:53:25,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:53:26,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:53:30,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:30,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881973056] [2022-11-02 19:53:30,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881973056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:30,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:30,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 19:53:30,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842945986] [2022-11-02 19:53:30,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:30,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:53:30,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:53:30,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:53:30,114 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 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 19:53:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:31,419 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2022-11-02 19:53:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:53:31,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 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 40 [2022-11-02 19:53:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:31,422 INFO L225 Difference]: With dead ends: 126 [2022-11-02 19:53:31,422 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 19:53:31,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2022-11-02 19:53:31,423 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 200 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 265 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-02 19:53:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 19:53:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2022-11-02 19:53:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 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 19:53:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-02 19:53:31,445 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 40 [2022-11-02 19:53:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-02 19:53:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 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 19:53:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-02 19:53:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:53:31,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:31,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:31,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:31,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1845699059, now seen corresponding path program 1 times [2022-11-02 19:53:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:31,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225170104] [2022-11-02 19:53:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:31,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:31,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:31,665 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:31,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:53:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:31,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:53:31,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:32,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:32,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:32,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225170104] [2022-11-02 19:53:32,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225170104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:32,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:32,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 19:53:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410915509] [2022-11-02 19:53:32,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:32,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:53:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:53:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:53:32,227 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:53:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:32,417 INFO L93 Difference]: Finished difference Result 174 states and 221 transitions. [2022-11-02 19:53:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:32,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 71 [2022-11-02 19:53:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:32,418 INFO L225 Difference]: With dead ends: 174 [2022-11-02 19:53:32,418 INFO L226 Difference]: Without dead ends: 122 [2022-11-02 19:53:32,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:53:32,420 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 260 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:32,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 256 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-02 19:53:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2022-11-02 19:53:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2022-11-02 19:53:32,426 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 71 [2022-11-02 19:53:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:32,427 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2022-11-02 19:53:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:53:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2022-11-02 19:53:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:53:32,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:32,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:32,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:32,643 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 40260725, now seen corresponding path program 1 times [2022-11-02 19:53:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904668990] [2022-11-02 19:53:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:32,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:32,645 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:32,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:53:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:32,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:53:32,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:33,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:33,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904668990] [2022-11-02 19:53:33,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904668990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:33,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:33,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 19:53:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691779497] [2022-11-02 19:53:33,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:53:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:53:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:53:33,293 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:53:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:33,495 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2022-11-02 19:53:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:33,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 71 [2022-11-02 19:53:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:33,497 INFO L225 Difference]: With dead ends: 183 [2022-11-02 19:53:33,497 INFO L226 Difference]: Without dead ends: 131 [2022-11-02 19:53:33,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:53:33,498 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 150 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 277 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-02 19:53:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2022-11-02 19:53:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 83 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:53:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-11-02 19:53:33,510 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 71 [2022-11-02 19:53:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:33,510 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-11-02 19:53:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 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 19:53:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-11-02 19:53:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:53:33,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:33,518 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:33,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-02 19:53:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:53:33,732 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash 720319095, now seen corresponding path program 1 times [2022-11-02 19:53:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:53:33,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229027613] [2022-11-02 19:53:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:33,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:53:33,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:53:33,736 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:53:33,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:53:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 19:53:33,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:53:35,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:53:52,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:53:52,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229027613] [2022-11-02 19:53:52,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229027613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:52,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:52,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 19:53:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264643176] [2022-11-02 19:53:52,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 19:53:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:53:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 19:53:52,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2302, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 19:53:52,370 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 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 19:54:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:21,411 INFO L93 Difference]: Finished difference Result 730 states and 890 transitions. [2022-11-02 19:54:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-02 19:54:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 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) Word has length 71 [2022-11-02 19:54:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:21,415 INFO L225 Difference]: With dead ends: 730 [2022-11-02 19:54:21,415 INFO L226 Difference]: Without dead ends: 728 [2022-11-02 19:54:21,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 92 SyntacticMatches, 42 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12504 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=5885, Invalid=29647, Unknown=0, NotChecked=0, Total=35532 [2022-11-02 19:54:21,428 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1202 mSDsluCounter, 3983 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 4435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2679 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:21,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 4104 Invalid, 4435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1598 Invalid, 0 Unknown, 2679 Unchecked, 2.2s Time] [2022-11-02 19:54:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-02 19:54:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 109. [2022-11-02 19:54:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 108 states have internal predecessors, (137), 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 19:54:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2022-11-02 19:54:21,445 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 71 [2022-11-02 19:54:21,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:21,445 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2022-11-02 19:54:21,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.48) internal successors, (124), 50 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 19:54:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2022-11-02 19:54:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:21,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:21,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:21,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:21,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash 720378677, now seen corresponding path program 1 times [2022-11-02 19:54:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:21,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935315812] [2022-11-02 19:54:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:21,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:21,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:21,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:21,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:54:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:21,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:54:21,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 19:54:22,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 19:54:22,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935315812] [2022-11-02 19:54:22,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935315812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:22,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:22,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 19:54:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104846634] [2022-11-02 19:54:22,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:22,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:54:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:22,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:54:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:54:22,496 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 19:54:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:23,003 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2022-11-02 19:54:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:54:23,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 71 [2022-11-02 19:54:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:23,005 INFO L225 Difference]: With dead ends: 255 [2022-11-02 19:54:23,005 INFO L226 Difference]: Without dead ends: 178 [2022-11-02 19:54:23,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-11-02 19:54:23,007 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 315 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:23,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 675 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:54:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-02 19:54:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 107. [2022-11-02 19:54:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 106 states have internal predecessors, (132), 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 19:54:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2022-11-02 19:54:23,019 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 71 [2022-11-02 19:54:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:23,019 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2022-11-02 19:54:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 19:54:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2022-11-02 19:54:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:23,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:23,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:23,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:23,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:23,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:23,237 INFO L85 PathProgramCache]: Analyzing trace with hash 777577397, now seen corresponding path program 1 times [2022-11-02 19:54:23,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:23,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187779325] [2022-11-02 19:54:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:23,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:23,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:23,239 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:23,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:54:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:23,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:54:23,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 19:54:23,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 19:54:24,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:24,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187779325] [2022-11-02 19:54:24,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187779325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:24,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:24,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 19:54:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402250883] [2022-11-02 19:54:24,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:24,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:54:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:54:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:54:24,003 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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 19:54:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:24,565 INFO L93 Difference]: Finished difference Result 244 states and 301 transitions. [2022-11-02 19:54:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:54:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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 71 [2022-11-02 19:54:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:24,567 INFO L225 Difference]: With dead ends: 244 [2022-11-02 19:54:24,567 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 19:54:24,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2022-11-02 19:54:24,569 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 408 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:24,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 631 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:54:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 19:54:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 107. [2022-11-02 19:54:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 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 19:54:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2022-11-02 19:54:24,603 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 71 [2022-11-02 19:54:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:24,604 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2022-11-02 19:54:24,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 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 19:54:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2022-11-02 19:54:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:24,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:24,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:24,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:24,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:24,806 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:24,806 INFO L85 PathProgramCache]: Analyzing trace with hash 133513081, now seen corresponding path program 1 times [2022-11-02 19:54:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013603974] [2022-11-02 19:54:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:24,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:24,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:24,808 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:24,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:54:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:24,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:54:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:25,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:54:25,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013603974] [2022-11-02 19:54:25,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013603974] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:25,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:25,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 19:54:25,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055563578] [2022-11-02 19:54:25,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:25,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:25,251 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 19:54:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:25,317 INFO L93 Difference]: Finished difference Result 321 states and 390 transitions. [2022-11-02 19:54:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:25,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2022-11-02 19:54:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:25,318 INFO L225 Difference]: With dead ends: 321 [2022-11-02 19:54:25,319 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 19:54:25,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:54:25,320 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 134 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:25,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 175 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 19:54:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 141. [2022-11-02 19:54:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 140 states have internal predecessors, (171), 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 19:54:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2022-11-02 19:54:25,333 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 71 [2022-11-02 19:54:25,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:25,333 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2022-11-02 19:54:25,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 19:54:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2022-11-02 19:54:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:25,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:25,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:25,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-02 19:54:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:25,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash -559544583, now seen corresponding path program 1 times [2022-11-02 19:54:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:25,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119429035] [2022-11-02 19:54:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:25,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:25,538 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:54:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:25,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:54:25,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:25,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:54:25,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119429035] [2022-11-02 19:54:25,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119429035] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:25,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:25,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 19:54:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723333592] [2022-11-02 19:54:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:26,001 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:54:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:26,083 INFO L93 Difference]: Finished difference Result 420 states and 509 transitions. [2022-11-02 19:54:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 71 [2022-11-02 19:54:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:26,085 INFO L225 Difference]: With dead ends: 420 [2022-11-02 19:54:26,085 INFO L226 Difference]: Without dead ends: 317 [2022-11-02 19:54:26,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:54:26,087 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 149 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:26,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 169 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-02 19:54:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 187. [2022-11-02 19:54:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 186 states have internal predecessors, (225), 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 19:54:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2022-11-02 19:54:26,104 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 71 [2022-11-02 19:54:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:26,105 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2022-11-02 19:54:26,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:54:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2022-11-02 19:54:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:26,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:26,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:26,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:26,306 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1651420167, now seen corresponding path program 1 times [2022-11-02 19:54:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:26,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030578916] [2022-11-02 19:54:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:26,309 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:26,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:54:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:26,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:54:26,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:26,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:54:26,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:26,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030578916] [2022-11-02 19:54:26,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030578916] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:26,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:26,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:54:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759204801] [2022-11-02 19:54:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:26,613 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 19:54:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:26,686 INFO L93 Difference]: Finished difference Result 411 states and 493 transitions. [2022-11-02 19:54:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2022-11-02 19:54:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:26,690 INFO L225 Difference]: With dead ends: 411 [2022-11-02 19:54:26,690 INFO L226 Difference]: Without dead ends: 292 [2022-11-02 19:54:26,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:26,691 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 80 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 234 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 19:54:26,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 234 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-02 19:54:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 187. [2022-11-02 19:54:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.1935483870967742) internal successors, (222), 186 states have internal predecessors, (222), 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 19:54:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2022-11-02 19:54:26,707 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 71 [2022-11-02 19:54:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:26,708 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2022-11-02 19:54:26,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 19:54:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2022-11-02 19:54:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:26,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:26,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:26,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:26,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:26,930 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2056741115, now seen corresponding path program 1 times [2022-11-02 19:54:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996796973] [2022-11-02 19:54:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:26,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:26,932 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:26,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:54:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:27,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-02 19:54:27,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:30,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:41,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:41,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996796973] [2022-11-02 19:54:41,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996796973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:41,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:41,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 19:54:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401311534] [2022-11-02 19:54:41,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 19:54:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 19:54:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2459, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 19:54:41,950 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 19:54:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:46,598 INFO L93 Difference]: Finished difference Result 538 states and 631 transitions. [2022-11-02 19:54:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-02 19:54:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 71 [2022-11-02 19:54:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:46,601 INFO L225 Difference]: With dead ends: 538 [2022-11-02 19:54:46,601 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 19:54:46,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=543, Invalid=6767, Unknown=0, NotChecked=0, Total=7310 [2022-11-02 19:54:46,604 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 191 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 932 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:46,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 5117 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 932 Unchecked, 0.1s Time] [2022-11-02 19:54:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 19:54:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 223. [2022-11-02 19:54:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.2027027027027026) internal successors, (267), 222 states have internal predecessors, (267), 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 19:54:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 267 transitions. [2022-11-02 19:54:46,620 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 267 transitions. Word has length 71 [2022-11-02 19:54:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:46,620 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 267 transitions. [2022-11-02 19:54:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 52 states have internal predecessors, (140), 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 19:54:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 267 transitions. [2022-11-02 19:54:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:46,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:46,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:46,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:46,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:46,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2106522489, now seen corresponding path program 1 times [2022-11-02 19:54:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:46,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042680947] [2022-11-02 19:54:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:46,840 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:54:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:54:46,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:54:47,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:54:47,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:54:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042680947] [2022-11-02 19:54:47,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042680947] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:47,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:47,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 19:54:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593718799] [2022-11-02 19:54:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:47,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:54:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:54:47,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:54:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:47,179 INFO L87 Difference]: Start difference. First operand 223 states and 267 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:54:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:47,248 INFO L93 Difference]: Finished difference Result 527 states and 626 transitions. [2022-11-02 19:54:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:54:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 71 [2022-11-02 19:54:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:47,250 INFO L225 Difference]: With dead ends: 527 [2022-11-02 19:54:47,250 INFO L226 Difference]: Without dead ends: 368 [2022-11-02 19:54:47,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:47,251 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 86 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 231 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 19:54:47,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 231 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:54:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-02 19:54:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 223. [2022-11-02 19:54:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.1711711711711712) internal successors, (260), 222 states have internal predecessors, (260), 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 19:54:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 260 transitions. [2022-11-02 19:54:47,265 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 260 transitions. Word has length 71 [2022-11-02 19:54:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:47,266 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 260 transitions. [2022-11-02 19:54:47,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:54:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 260 transitions. [2022-11-02 19:54:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:54:47,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:47,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:47,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-02 19:54:47,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:54:47,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash 826658811, now seen corresponding path program 1 times [2022-11-02 19:54:47,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:54:47,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318787360] [2022-11-02 19:54:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:54:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:54:47,484 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:54:47,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 19:54:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:47,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 19:54:47,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:54:50,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:55:03,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318787360] [2022-11-02 19:55:03,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318787360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:03,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:55:03,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2022-11-02 19:55:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945755342] [2022-11-02 19:55:03,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-02 19:55:03,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-02 19:55:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3089, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 19:55:03,960 INFO L87 Difference]: Start difference. First operand 223 states and 260 transitions. Second operand has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 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 19:55:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:12,467 INFO L93 Difference]: Finished difference Result 777 states and 883 transitions. [2022-11-02 19:55:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 19:55:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 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 71 [2022-11-02 19:55:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:12,470 INFO L225 Difference]: With dead ends: 777 [2022-11-02 19:55:12,470 INFO L226 Difference]: Without dead ends: 775 [2022-11-02 19:55:12,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1367, Invalid=11065, Unknown=0, NotChecked=0, Total=12432 [2022-11-02 19:55:12,473 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 368 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1932 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:12,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 3922 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 319 Invalid, 0 Unknown, 1932 Unchecked, 0.4s Time] [2022-11-02 19:55:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-02 19:55:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 243. [2022-11-02 19:55:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.1818181818181819) internal successors, (286), 242 states have internal predecessors, (286), 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 19:55:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 286 transitions. [2022-11-02 19:55:12,502 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 286 transitions. Word has length 71 [2022-11-02 19:55:12,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:12,502 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 286 transitions. [2022-11-02 19:55:12,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 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 19:55:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 286 transitions. [2022-11-02 19:55:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:55:12,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:12,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:12,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:12,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:12,705 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -761689091, now seen corresponding path program 1 times [2022-11-02 19:55:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554063875] [2022-11-02 19:55:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:12,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:12,707 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:12,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 19:55:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:12,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:55:12,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:55:12,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:55:13,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:13,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554063875] [2022-11-02 19:55:13,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554063875] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:13,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:55:13,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 19:55:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319882940] [2022-11-02 19:55:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:55:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:55:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:55:13,039 INFO L87 Difference]: Start difference. First operand 243 states and 286 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:55:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:13,107 INFO L93 Difference]: Finished difference Result 846 states and 975 transitions. [2022-11-02 19:55:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:55:13,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 71 [2022-11-02 19:55:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:13,113 INFO L225 Difference]: With dead ends: 846 [2022-11-02 19:55:13,114 INFO L226 Difference]: Without dead ends: 659 [2022-11-02 19:55:13,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:13,115 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 210 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:13,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-02 19:55:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 351. [2022-11-02 19:55:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.1628571428571428) internal successors, (407), 350 states have internal predecessors, (407), 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 19:55:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 407 transitions. [2022-11-02 19:55:13,142 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 407 transitions. Word has length 71 [2022-11-02 19:55:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:13,142 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 407 transitions. [2022-11-02 19:55:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:55:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 407 transitions. [2022-11-02 19:55:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:55:13,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:13,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:13,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:13,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:13,344 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1528258685, now seen corresponding path program 1 times [2022-11-02 19:55:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948504733] [2022-11-02 19:55:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:13,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:13,346 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:13,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 19:55:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:55:13,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:55:13,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:55:13,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948504733] [2022-11-02 19:55:13,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948504733] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:55:13,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:55:13,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 19:55:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454170958] [2022-11-02 19:55:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:55:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:55:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:13,641 INFO L87 Difference]: Start difference. First operand 351 states and 407 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:55:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:13,700 INFO L93 Difference]: Finished difference Result 823 states and 943 transitions. [2022-11-02 19:55:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:55:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 71 [2022-11-02 19:55:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:13,704 INFO L225 Difference]: With dead ends: 823 [2022-11-02 19:55:13,704 INFO L226 Difference]: Without dead ends: 574 [2022-11-02 19:55:13,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:55:13,705 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 114 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:13,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 240 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-02 19:55:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 351. [2022-11-02 19:55:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.1228571428571428) internal successors, (393), 350 states have internal predecessors, (393), 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 19:55:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 393 transitions. [2022-11-02 19:55:13,724 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 393 transitions. Word has length 71 [2022-11-02 19:55:13,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:13,725 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 393 transitions. [2022-11-02 19:55:13,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:55:13,725 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 393 transitions. [2022-11-02 19:55:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 19:55:13,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:13,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:13,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:13,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:13,930 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash -60089217, now seen corresponding path program 1 times [2022-11-02 19:55:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:13,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843095984] [2022-11-02 19:55:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:13,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:13,933 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:13,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 19:55:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:14,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-02 19:55:14,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:55:17,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:55:34,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:55:34,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843095984] [2022-11-02 19:55:34,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843095984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:34,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:55:34,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2022-11-02 19:55:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228222551] [2022-11-02 19:55:34,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:34,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-02 19:55:34,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:55:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-02 19:55:34,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=4299, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 19:55:34,555 INFO L87 Difference]: Start difference. First operand 351 states and 393 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 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 19:55:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:43,738 INFO L93 Difference]: Finished difference Result 798 states and 879 transitions. [2022-11-02 19:55:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-02 19:55:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 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 71 [2022-11-02 19:55:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:43,741 INFO L225 Difference]: With dead ends: 798 [2022-11-02 19:55:43,742 INFO L226 Difference]: Without dead ends: 796 [2022-11-02 19:55:43,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=419, Invalid=7413, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 19:55:43,747 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 139 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2014 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:43,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 3832 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 2014 Unchecked, 0.0s Time] [2022-11-02 19:55:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-02 19:55:43,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 694. [2022-11-02 19:55:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.113997113997114) internal successors, (772), 693 states have internal predecessors, (772), 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 19:55:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 772 transitions. [2022-11-02 19:55:43,795 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 772 transitions. Word has length 71 [2022-11-02 19:55:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:43,795 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 772 transitions. [2022-11-02 19:55:43,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 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 19:55:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 772 transitions. [2022-11-02 19:55:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 19:55:43,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:43,797 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:43,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:43,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:55:43,998 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:43,998 INFO L85 PathProgramCache]: Analyzing trace with hash -272216387, now seen corresponding path program 2 times [2022-11-02 19:55:43,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:55:43,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655480449] [2022-11-02 19:55:43,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:55:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:55:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:55:44,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:55:44,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebdc5698-9516-43a8-acac-6760806fa17b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 19:55:44,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:55:44,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:55:44,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 19:55:44,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 19:55:46,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 88 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:56:21,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655480449] [2022-11-02 19:56:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655480449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:21,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:56:21,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 45] total 80 [2022-11-02 19:56:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101604309] [2022-11-02 19:56:21,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-02 19:56:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-02 19:56:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=6085, Unknown=0, NotChecked=0, Total=6320 [2022-11-02 19:56:21,730 INFO L87 Difference]: Start difference. First operand 694 states and 772 transitions. Second operand has 80 states, 80 states have (on average 2.2375) internal successors, (179), 80 states have internal predecessors, (179), 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)