./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/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_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/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_f438a068-f78a-4a22-93cb-42496d85f06a/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 9be67a2dd8530a66f1036afdfdb19835d7e01c5ffc65f4ebaab799190bdae8fe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:32:49,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:32:49,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:32:49,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:32:49,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:32:49,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:32:49,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:32:49,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:32:49,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:32:49,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:32:49,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:32:49,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:32:49,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:32:49,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:32:49,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:32:49,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:32:49,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:32:49,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:32:49,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:32:49,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:32:49,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:32:49,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:32:49,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:32:49,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:32:49,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:32:49,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:32:49,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:32:49,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:32:49,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:32:49,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:32:49,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:32:49,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:32:49,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:32:49,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:32:49,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:32:49,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:32:49,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:32:49,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:32:49,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:32:49,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:32:49,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:32:49,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:32:49,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:32:49,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:32:49,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:32:49,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:32:49,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:32:49,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:32:49,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:32:49,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:32:49,459 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:32:49,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:32:49,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:32:49,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:32:49,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:32:49,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:32:49,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:32:49,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:32:49,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:32:49,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:32:49,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:32:49,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:32:49,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:32:49,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:49,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:32:49,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:32:49,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:32:49,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:32:49,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:32:49,466 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:32:49,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:32:49,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:32:49,467 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_f438a068-f78a-4a22-93cb-42496d85f06a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be67a2dd8530a66f1036afdfdb19835d7e01c5ffc65f4ebaab799190bdae8fe [2022-11-02 20:32:49,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:32:49,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:32:49,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:32:49,834 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:32:49,835 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:32:49,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2022-11-02 20:32:49,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/3a1d41180/130840e4084c465b8c2984a856663b6a/FLAG174323029 [2022-11-02 20:32:50,647 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:32:50,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2022-11-02 20:32:50,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/3a1d41180/130840e4084c465b8c2984a856663b6a/FLAG174323029 [2022-11-02 20:32:50,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/3a1d41180/130840e4084c465b8c2984a856663b6a [2022-11-02 20:32:50,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:32:50,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:32:50,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:50,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:32:50,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:32:50,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:50" (1/1) ... [2022-11-02 20:32:50,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575c6788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:50, skipping insertion in model container [2022-11-02 20:32:50,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:50" (1/1) ... [2022-11-02 20:32:50,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:32:51,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:32:51,241 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_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1107,1120] [2022-11-02 20:32:51,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:51,316 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:32:51,327 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_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1107,1120] [2022-11-02 20:32:51,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:51,385 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:32:51,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51 WrapperNode [2022-11-02 20:32:51,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:51,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:51,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:32:51,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:32:51,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,466 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 214 [2022-11-02 20:32:51,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:51,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:32:51,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:32:51,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:32:51,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:32:51,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:32:51,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:32:51,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:32:51,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (1/1) ... [2022-11-02 20:32:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:51,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:32:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:32:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:32:51,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:32:51,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:32:51,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:32:52,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:32:52,461 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:32:52,462 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:32:52,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:52 BoogieIcfgContainer [2022-11-02 20:32:52,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:32:52,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:32:52,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:32:52,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:32:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:50" (1/3) ... [2022-11-02 20:32:52,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c0c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:52, skipping insertion in model container [2022-11-02 20:32:52,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:51" (2/3) ... [2022-11-02 20:32:52,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c0c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:32:52, skipping insertion in model container [2022-11-02 20:32:52,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:52" (3/3) ... [2022-11-02 20:32:52,482 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2022-11-02 20:32:52,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:32:52,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:32:52,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:32:52,620 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;@23c0d99d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:32:52,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:32:52,637 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 20:32:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:32:52,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:52,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:52,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:32:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:52,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446428122] [2022-11-02 20:32:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:53,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446428122] [2022-11-02 20:32:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446428122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:53,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:53,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669936008] [2022-11-02 20:32:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:53,608 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 20:32:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:53,704 INFO L93 Difference]: Finished difference Result 106 states and 158 transitions. [2022-11-02 20:32:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:53,708 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 20:32:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:53,720 INFO L225 Difference]: With dead ends: 106 [2022-11-02 20:32:53,721 INFO L226 Difference]: Without dead ends: 69 [2022-11-02 20:32:53,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:53,732 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 20:32:53,735 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 20:32:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-02 20:32:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2022-11-02 20:32:53,787 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 20:32:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 20:32:53,794 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 20:32:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:53,794 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 20:32:53,795 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 20:32:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 20:32:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:32:53,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:53,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:53,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:32:53,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:32:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:53,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718590634] [2022-11-02 20:32:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718590634] [2022-11-02 20:32:54,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718590634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:54,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:54,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:32:54,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805274977] [2022-11-02 20:32:54,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:54,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:54,153 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 20:32:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:54,244 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2022-11-02 20:32:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:32:54,246 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 20:32:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:54,248 INFO L225 Difference]: With dead ends: 104 [2022-11-02 20:32:54,250 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:32:54,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:32:54,253 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 20:32:54,256 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 20:32:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:32:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 39. [2022-11-02 20:32:54,266 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 20:32:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 20:32:54,271 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 20:32:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:54,274 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 20:32:54,275 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 20:32:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 20:32:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:32:54,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:54,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:32:54,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:32:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142810381] [2022-11-02 20:32:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:32:54,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:32:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:32:54,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:32:54,774 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:32:54,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:32:54,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:32:54,792 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:32:54,799 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:32:54,843 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:32:54,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:32:54 BoogieIcfgContainer [2022-11-02 20:32:54,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:32:54,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:32:54,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:32:54,855 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:32:54,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:32:52" (3/4) ... [2022-11-02 20:32:54,860 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:32:54,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:32:54,861 INFO L158 Benchmark]: Toolchain (without parser) took 3912.76ms. Allocated memory is still 130.0MB. Free memory was 94.8MB in the beginning and 71.7MB in the end (delta: 23.0MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,862 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:32:54,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.52ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 101.8MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.62ms. Allocated memory is still 130.0MB. Free memory was 101.8MB in the beginning and 98.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,864 INFO L158 Benchmark]: Boogie Preprocessor took 79.38ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 96.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,865 INFO L158 Benchmark]: RCFGBuilder took 916.90ms. Allocated memory is still 130.0MB. Free memory was 96.8MB in the beginning and 75.7MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,866 INFO L158 Benchmark]: TraceAbstraction took 2386.82ms. Allocated memory is still 130.0MB. Free memory was 75.7MB in the beginning and 72.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,867 INFO L158 Benchmark]: Witness Printer took 5.56ms. Allocated memory is still 130.0MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:54,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 67.3MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.52ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 101.8MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.62ms. Allocated memory is still 130.0MB. Free memory was 101.8MB in the beginning and 98.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.38ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 96.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 916.90ms. Allocated memory is still 130.0MB. Free memory was 96.8MB in the beginning and 75.7MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2386.82ms. Allocated memory is still 130.0MB. Free memory was 75.7MB in the beginning and 72.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 5.56ms. Allocated memory is still 130.0MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 97, overapproximation of bitwiseOr at line 95, overapproximation of bitwiseAnd at line 86. 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_1 var_11 = 0; [L32] const SORT_5 var_15 = 0; [L33] const SORT_5 var_21 = 1; [L34] const SORT_1 var_31 = 1; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L39] SORT_5 input_6; [L40] SORT_5 input_7; [L41] SORT_1 input_8; [L42] SORT_5 input_9; [L43] SORT_5 input_10; [L45] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L47] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L50] SORT_1 init_13_arg_1 = var_11; [L51] state_12 = init_13_arg_1 [L52] SORT_5 init_17_arg_1 = var_15; [L53] state_16 = init_17_arg_1 [L54] SORT_1 init_19_arg_1 = var_11; [L55] state_18 = init_19_arg_1 [L56] SORT_5 init_24_arg_1 = var_15; [L57] state_23 = init_24_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=1, var_31=1] [L60] input_2 = __VERIFIER_nondet_uchar() [L61] input_2 = input_2 & mask_SORT_1 [L62] input_3 = __VERIFIER_nondet_uchar() [L63] input_3 = input_3 & mask_SORT_1 [L64] input_4 = __VERIFIER_nondet_uchar() [L65] input_6 = __VERIFIER_nondet_uchar() [L66] input_7 = __VERIFIER_nondet_uchar() [L67] input_8 = __VERIFIER_nondet_uchar() [L68] input_9 = __VERIFIER_nondet_uchar() [L69] input_10 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_14_arg_0 = state_12; [L73] SORT_1 var_14 = ~var_14_arg_0; [L74] SORT_1 var_20_arg_0 = state_18; [L75] SORT_5 var_20_arg_1 = state_16; [L76] 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_24_arg_1=0, input_10=4, input_2=1, input_3=1, input_4=7, input_6=6, input_7=2, input_8=5, input_9=3, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=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=2, var_21=1, var_31=1] [L77] 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_24_arg_1=0, input_10=4, input_2=1, input_3=1, input_4=7, input_6=6, input_7=2, input_8=5, input_9=3, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=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=2, var_20_arg_1=0, var_20_arg_2=2, var_21=1, var_31=1] [L77] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; [L78] var_20 = var_20 & mask_SORT_5 [L79] SORT_5 var_22_arg_0 = var_20; [L80] SORT_5 var_22_arg_1 = var_21; [L81] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L82] SORT_1 var_25_arg_0 = state_18; [L83] SORT_5 var_25_arg_1 = state_23; [L84] SORT_5 var_25_arg_2 = input_7; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_10=4, input_2=1, input_3=1, input_4=7, input_6=6, input_7=2, input_8=5, input_9=3, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=3, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=2, var_21=1, var_22=0, var_22_arg_0=3, var_22_arg_1=1, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=2, var_31=1] [L85] EXPR var_25_arg_0 ? var_25_arg_1 : var_25_arg_2 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_10=4, input_2=1, input_3=1, input_4=7, input_6=6, input_7=2, input_8=5, input_9=3, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14_arg_0=0, var_15=0, var_20=3, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=2, var_21=1, var_22=0, var_22_arg_0=3, var_22_arg_1=1, var_25_arg_0=0, var_25_arg_0 ? var_25_arg_1 : var_25_arg_2=2, var_25_arg_1=0, var_25_arg_2=2, var_31=1] [L85] SORT_5 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; [L86] var_25 = var_25 & mask_SORT_5 [L87] SORT_5 var_26_arg_0 = var_25; [L88] SORT_5 var_26_arg_1 = var_21; [L89] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L90] SORT_1 var_27_arg_0 = var_22; [L91] SORT_1 var_27_arg_1 = var_26; [L92] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L93] SORT_1 var_28_arg_0 = var_14; [L94] SORT_1 var_28_arg_1 = var_27; [L95] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L96] SORT_1 var_32_arg_0 = var_28; [L97] SORT_1 var_32 = ~var_32_arg_0; [L98] SORT_1 var_33_arg_0 = var_31; [L99] SORT_1 var_33_arg_1 = var_32; [L100] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L101] var_33 = var_33 & mask_SORT_1 [L102] SORT_1 bad_34_arg_0 = var_33; [L103] CALL __VERIFIER_assert(!(bad_34_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: 2.2s, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s 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 20:32:54,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/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_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/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_f438a068-f78a-4a22-93cb-42496d85f06a/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 9be67a2dd8530a66f1036afdfdb19835d7e01c5ffc65f4ebaab799190bdae8fe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:32:57,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:32:57,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:32:57,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:32:57,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:32:57,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:32:57,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:32:57,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:32:57,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:32:57,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:32:57,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:32:57,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:32:57,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:32:57,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:32:57,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:32:57,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:32:57,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:32:57,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:32:57,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:32:57,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:32:57,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:32:57,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:32:57,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:32:57,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:32:57,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:32:57,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:32:57,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:32:57,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:32:57,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:32:57,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:32:57,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:32:57,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:32:57,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:32:57,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:32:57,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:32:57,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:32:57,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:32:57,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:32:57,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:32:57,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:32:57,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:32:57,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:32:57,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:32:57,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:32:57,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:32:57,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:32:57,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:32:57,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:32:57,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:32:57,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:32:57,825 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:32:57,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:32:57,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:32:57,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:32:57,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:32:57,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:32:57,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:32:57,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:32:57,827 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:32:57,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:32:57,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:32:57,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:32:57,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:32:57,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:32:57,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:32:57,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:57,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:32:57,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:32:57,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:32:57,830 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:32:57,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:32:57,830 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:32:57,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:32:57,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:32:57,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:32:57,831 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_f438a068-f78a-4a22-93cb-42496d85f06a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be67a2dd8530a66f1036afdfdb19835d7e01c5ffc65f4ebaab799190bdae8fe [2022-11-02 20:32:58,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:32:58,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:32:58,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:32:58,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:32:58,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:32:58,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2022-11-02 20:32:58,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/5bfce1153/f2eaed3a61484cbb9ae91f8858bdae36/FLAG03251b8a9 [2022-11-02 20:32:59,031 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:32:59,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2022-11-02 20:32:59,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/5bfce1153/f2eaed3a61484cbb9ae91f8858bdae36/FLAG03251b8a9 [2022-11-02 20:32:59,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/data/5bfce1153/f2eaed3a61484cbb9ae91f8858bdae36 [2022-11-02 20:32:59,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:32:59,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:32:59,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:59,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:32:59,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:32:59,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e1e0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59, skipping insertion in model container [2022-11-02 20:32:59,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:32:59,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:32:59,512 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_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1107,1120] [2022-11-02 20:32:59,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:59,589 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:32:59,650 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_f438a068-f78a-4a22-93cb-42496d85f06a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1107,1120] [2022-11-02 20:32:59,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:59,745 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:32:59,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59 WrapperNode [2022-11-02 20:32:59,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:59,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:59,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:32:59,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:32:59,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,833 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 214 [2022-11-02 20:32:59,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:32:59,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:32:59,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:32:59,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:32:59,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:32:59,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:32:59,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:32:59,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:32:59,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:32:59,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:32:59,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:32:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:32:59,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:00,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:00,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:00,641 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:00,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:00,658 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:33:00,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:00 BoogieIcfgContainer [2022-11-02 20:33:00,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:00,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:00,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:00,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:00,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:59" (1/3) ... [2022-11-02 20:33:00,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300e688e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:00, skipping insertion in model container [2022-11-02 20:33:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59" (2/3) ... [2022-11-02 20:33:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300e688e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:00, skipping insertion in model container [2022-11-02 20:33:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:00" (3/3) ... [2022-11-02 20:33:00,683 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2022-11-02 20:33:00,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:00,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:33:00,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:00,802 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;@28881875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:00,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:33:00,809 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 20:33:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:33:00,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:00,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:00,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:33:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:00,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770799279] [2022-11-02 20:33:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:00,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:33:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:01,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:01,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:01,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:01,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:01,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770799279] [2022-11-02 20:33:01,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770799279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:01,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:01,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147123573] [2022-11-02 20:33:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:01,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:01,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:01,267 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 20:33:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:01,416 INFO L93 Difference]: Finished difference Result 137 states and 203 transitions. [2022-11-02 20:33:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:01,420 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 20:33:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:01,432 INFO L225 Difference]: With dead ends: 137 [2022-11-02 20:33:01,432 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:33:01,436 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 20:33:01,441 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:01,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 179 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:33:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 37. [2022-11-02 20:33:01,487 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 20:33:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-11-02 20:33:01,490 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 9 [2022-11-02 20:33:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-11-02 20:33:01,491 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 20:33:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-11-02 20:33:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:33:01,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:01,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:01,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:01,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:01,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:33:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:01,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788241180] [2022-11-02 20:33:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:01,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:01,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:01,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:33:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:01,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:01,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:01,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:01,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788241180] [2022-11-02 20:33:01,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788241180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:01,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:01,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453698509] [2022-11-02 20:33:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:01,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:01,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:01,933 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 20:33:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:02,026 INFO L93 Difference]: Finished difference Result 133 states and 187 transitions. [2022-11-02 20:33:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:02,034 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 20:33:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:02,036 INFO L225 Difference]: With dead ends: 133 [2022-11-02 20:33:02,037 INFO L226 Difference]: Without dead ends: 100 [2022-11-02 20:33:02,037 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 20:33:02,039 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:02,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-02 20:33:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 39. [2022-11-02 20:33:02,058 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 20:33:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-02 20:33:02,062 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-11-02 20:33:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:02,063 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-02 20:33:02,063 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 20:33:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-02 20:33:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:33:02,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:02,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:02,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-02 20:33:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:02,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:33:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369490749] [2022-11-02 20:33:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:02,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:33:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:02,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:33:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:02,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:02,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:02,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369490749] [2022-11-02 20:33:02,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369490749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:02,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:02,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119733983] [2022-11-02 20:33:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:02,589 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 20:33:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:02,738 INFO L93 Difference]: Finished difference Result 73 states and 101 transitions. [2022-11-02 20:33:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:02,741 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 20:33:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:02,747 INFO L225 Difference]: With dead ends: 73 [2022-11-02 20:33:02,748 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:33:02,748 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 20:33:02,752 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 20:33:02,754 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 20:33:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:33:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 41. [2022-11-02 20:33:02,768 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 20:33:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-11-02 20:33:02,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 9 [2022-11-02 20:33:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:02,776 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-11-02 20:33:02,776 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 20:33:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-11-02 20:33:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:02,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:02,779 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 20:33:02,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:33:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:02,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1250611463, now seen corresponding path program 1 times [2022-11-02 20:33:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:02,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075664525] [2022-11-02 20:33:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:02,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:02,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:02,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:33:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:03,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:33:03,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:03,217 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 20:33:03,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:03,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:03,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075664525] [2022-11-02 20:33:03,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075664525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:03,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:03,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687402514] [2022-11-02 20:33:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:03,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:03,232 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 20:33:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:03,261 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2022-11-02 20:33:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:03,262 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 20:33:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:03,263 INFO L225 Difference]: With dead ends: 81 [2022-11-02 20:33:03,263 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:33:03,264 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 20:33:03,265 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 20:33:03,266 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 20:33:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:33:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-11-02 20:33:03,272 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 20:33:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2022-11-02 20:33:03,273 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 40 [2022-11-02 20:33:03,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:03,273 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2022-11-02 20:33:03,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2022-11-02 20:33:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:03,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:03,275 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 20:33:03,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:03,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:03,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1110062853, now seen corresponding path program 1 times [2022-11-02 20:33:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741670739] [2022-11-02 20:33:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:03,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:03,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:03,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:33:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:03,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:33:03,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:03,758 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 20:33:03,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:03,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:03,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741670739] [2022-11-02 20:33:03,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741670739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:03,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:03,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780471480] [2022-11-02 20:33:03,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:03,775 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 20:33:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:03,813 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2022-11-02 20:33:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:03,814 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 20:33:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:03,816 INFO L225 Difference]: With dead ends: 85 [2022-11-02 20:33:03,816 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 20:33:03,817 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 20:33:03,819 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 20:33:03,820 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 20:33:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 20:33:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-11-02 20:33:03,833 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 20:33:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2022-11-02 20:33:03,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 40 [2022-11-02 20:33:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:03,834 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-11-02 20:33:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2022-11-02 20:33:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:03,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:03,837 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 20:33:03,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:04,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -687361027, now seen corresponding path program 1 times [2022-11-02 20:33:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:04,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733671064] [2022-11-02 20:33:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:04,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:04,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:04,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:04,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:33:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:33:04,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:04,303 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 20:33:04,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:04,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:04,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733671064] [2022-11-02 20:33:04,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733671064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:04,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:04,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358308397] [2022-11-02 20:33:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:04,307 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 20:33:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:04,405 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-11-02 20:33:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:04,406 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 20:33:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:04,407 INFO L225 Difference]: With dead ends: 120 [2022-11-02 20:33:04,407 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 20:33:04,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:04,409 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 108 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 20:33:04,409 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 20:33:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 20:33:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2022-11-02 20:33:04,417 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 20:33:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2022-11-02 20:33:04,418 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 40 [2022-11-02 20:33:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:04,418 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2022-11-02 20:33:04,419 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 20:33:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-11-02 20:33:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:04,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:04,420 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 20:33:04,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:04,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1001582715, now seen corresponding path program 1 times [2022-11-02 20:33:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:04,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348970094] [2022-11-02 20:33:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:04,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:04,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:04,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:04,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:33:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:04,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:33:04,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:04,862 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 20:33:04,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:04,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:04,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348970094] [2022-11-02 20:33:04,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348970094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:04,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:04,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:04,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796484376] [2022-11-02 20:33:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:04,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:04,866 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 20:33:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:04,897 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2022-11-02 20:33:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:33:04,897 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 20:33:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:04,898 INFO L225 Difference]: With dead ends: 95 [2022-11-02 20:33:04,899 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 20:33:04,899 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 20:33:04,900 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 20:33:04,901 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 20:33:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 20:33:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-11-02 20:33:04,907 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 20:33:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-02 20:33:04,908 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 40 [2022-11-02 20:33:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-02 20:33:04,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-02 20:33:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:04,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:04,910 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 20:33:04,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:33:05,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:05,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1702647293, now seen corresponding path program 1 times [2022-11-02 20:33:05,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:05,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609876313] [2022-11-02 20:33:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:05,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:05,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:33:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:05,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:33:05,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:05,496 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 20:33:05,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:05,672 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 20:33:05,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:05,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609876313] [2022-11-02 20:33:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609876313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:05,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:05,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:33:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121934322] [2022-11-02 20:33:05,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:33:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:33:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:05,676 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 20:33:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:06,181 INFO L93 Difference]: Finished difference Result 188 states and 247 transitions. [2022-11-02 20:33:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:33:06,181 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 20:33:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:06,182 INFO L225 Difference]: With dead ends: 188 [2022-11-02 20:33:06,182 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 20:33:06,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:33:06,184 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 20:33:06,184 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 20:33:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 20:33:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 68. [2022-11-02 20:33:06,196 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 20:33:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2022-11-02 20:33:06,197 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 40 [2022-11-02 20:33:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:06,197 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2022-11-02 20:33:06,198 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 20:33:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2022-11-02 20:33:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:06,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:06,208 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 20:33:06,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:06,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:06,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1759905595, now seen corresponding path program 1 times [2022-11-02 20:33:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:06,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072435215] [2022-11-02 20:33:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:06,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:06,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:06,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:06,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:33:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:33:06,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:06,738 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 20:33:06,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:06,887 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 20:33:06,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:06,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072435215] [2022-11-02 20:33:06,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072435215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:06,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:06,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:33:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409530101] [2022-11-02 20:33:06,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:06,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:33:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:33:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:06,891 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 20:33:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:07,361 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2022-11-02 20:33:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:33:07,362 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 20:33:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:07,363 INFO L225 Difference]: With dead ends: 203 [2022-11-02 20:33:07,363 INFO L226 Difference]: Without dead ends: 157 [2022-11-02 20:33:07,364 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 20:33:07,365 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 20:33:07,365 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 20:33:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-02 20:33:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 70. [2022-11-02 20:33:07,373 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 20:33:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2022-11-02 20:33:07,374 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 40 [2022-11-02 20:33:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:07,375 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2022-11-02 20:33:07,375 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 20:33:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2022-11-02 20:33:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 20:33:07,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:07,376 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 20:33:07,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:07,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:07,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1759965177, now seen corresponding path program 1 times [2022-11-02 20:33:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:07,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577996475] [2022-11-02 20:33:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:07,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:07,595 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:07,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:33:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:07,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:33:07,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:08,548 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 20:33:08,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:10,086 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 20:33:10,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:10,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577996475] [2022-11-02 20:33:10,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577996475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:10,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:10,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:33:10,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206773184] [2022-11-02 20:33:10,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:10,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:33:10,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:10,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:33:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:33:10,090 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 20:33:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:10,729 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2022-11-02 20:33:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:33:10,730 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 20:33:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:10,733 INFO L225 Difference]: With dead ends: 126 [2022-11-02 20:33:10,733 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 20:33:10,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:33:10,734 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 190 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:10,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 271 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-11-02 20:33:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 20:33:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2022-11-02 20:33:10,743 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 20:33:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-02 20:33:10,744 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 40 [2022-11-02 20:33:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:10,745 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-02 20:33:10,745 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 20:33:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-02 20:33:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:10,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:10,747 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 20:33:10,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:10,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,961 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1845699059, now seen corresponding path program 1 times [2022-11-02 20:33:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:10,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134618807] [2022-11-02 20:33:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:10,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:10,965 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:10,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:33:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:11,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:33:11,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:11,409 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 20:33:11,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:11,576 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 20:33:11,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134618807] [2022-11-02 20:33:11,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134618807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:11,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:11,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:33:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136774823] [2022-11-02 20:33:11,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:11,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:33:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:33:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:11,580 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 20:33:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:11,805 INFO L93 Difference]: Finished difference Result 174 states and 221 transitions. [2022-11-02 20:33:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:11,806 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 20:33:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:11,807 INFO L225 Difference]: With dead ends: 174 [2022-11-02 20:33:11,807 INFO L226 Difference]: Without dead ends: 122 [2022-11-02 20:33:11,808 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 20:33:11,808 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 187 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:11,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 307 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-02 20:33:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 74. [2022-11-02 20:33:11,820 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 20:33:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2022-11-02 20:33:11,821 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 71 [2022-11-02 20:33:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:11,823 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2022-11-02 20:33:11,823 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 20:33:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2022-11-02 20:33:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:11,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:11,826 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 20:33:11,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash 40260725, now seen corresponding path program 1 times [2022-11-02 20:33:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:12,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420624564] [2022-11-02 20:33:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:12,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:12,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:12,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:33:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:33:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:12,529 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 20:33:12,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:12,722 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 20:33:12,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420624564] [2022-11-02 20:33:12,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420624564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:12,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:12,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:33:12,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283441697] [2022-11-02 20:33:12,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:12,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:33:12,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:33:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:12,726 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 20:33:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:12,946 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2022-11-02 20:33:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:33:12,947 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 20:33:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:12,948 INFO L225 Difference]: With dead ends: 183 [2022-11-02 20:33:12,948 INFO L226 Difference]: Without dead ends: 131 [2022-11-02 20:33:12,948 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 20:33:12,949 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 222 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:12,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 242 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-02 20:33:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2022-11-02 20:33:12,956 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 20:33:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-11-02 20:33:12,957 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 71 [2022-11-02 20:33:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:12,958 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-11-02 20:33:12,958 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 20:33:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-11-02 20:33:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:12,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:12,959 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 20:33:12,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:13,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 720319095, now seen corresponding path program 1 times [2022-11-02 20:33:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493370472] [2022-11-02 20:33:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:13,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:13,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:13,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:33:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:33:13,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:14,720 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 20:33:14,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:33:22,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493370472] [2022-11-02 20:33:22,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493370472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:22,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:22,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:33:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093867343] [2022-11-02 20:33:22,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:22,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:33:22,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:33:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2276, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:33:22,244 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 20:33:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:35,378 INFO L93 Difference]: Finished difference Result 555 states and 686 transitions. [2022-11-02 20:33:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-02 20:33:35,379 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 20:33:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:35,382 INFO L225 Difference]: With dead ends: 555 [2022-11-02 20:33:35,382 INFO L226 Difference]: Without dead ends: 553 [2022-11-02 20:33:35,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 94 SyntacticMatches, 16 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=2388, Invalid=14382, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 20:33:35,390 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 624 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1895 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 3445 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 899 Invalid, 0 Unknown, 1895 Unchecked, 1.2s Time] [2022-11-02 20:33:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-02 20:33:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 235. [2022-11-02 20:33:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2777777777777777) internal successors, (299), 234 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2022-11-02 20:33:35,410 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 71 [2022-11-02 20:33:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:35,411 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2022-11-02 20:33:35,411 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 20:33:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2022-11-02 20:33:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:35,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:35,413 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 20:33:35,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:35,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:35,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 720378677, now seen corresponding path program 1 times [2022-11-02 20:33:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:35,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445863409] [2022-11-02 20:33:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:35,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:35,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:35,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:33:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:35,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:35,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:36,153 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 20:33:36,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:36,480 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 20:33:36,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:36,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445863409] [2022-11-02 20:33:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445863409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:36,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:36,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:33:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708203058] [2022-11-02 20:33:36,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:33:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:33:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:33:36,484 INFO L87 Difference]: Start difference. First operand 235 states and 299 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 20:33:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:36,992 INFO L93 Difference]: Finished difference Result 543 states and 688 transitions. [2022-11-02 20:33:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:33:36,993 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 20:33:36,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:36,995 INFO L225 Difference]: With dead ends: 543 [2022-11-02 20:33:36,995 INFO L226 Difference]: Without dead ends: 378 [2022-11-02 20:33:36,996 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 20:33:36,997 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 274 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:36,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 693 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:33:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-02 20:33:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 229. [2022-11-02 20:33:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 228 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 20:33:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 286 transitions. [2022-11-02 20:33:37,016 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 286 transitions. Word has length 71 [2022-11-02 20:33:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:37,017 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 286 transitions. [2022-11-02 20:33:37,017 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 20:33:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 286 transitions. [2022-11-02 20:33:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:37,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:37,019 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 20:33:37,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:37,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:37,234 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 777577397, now seen corresponding path program 1 times [2022-11-02 20:33:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:37,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910280536] [2022-11-02 20:33:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:37,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:37,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:33:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:37,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:37,747 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 20:33:37,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:38,077 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 20:33:38,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:38,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910280536] [2022-11-02 20:33:38,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910280536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:38,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:38,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:33:38,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231195233] [2022-11-02 20:33:38,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:38,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:33:38,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:33:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:33:38,079 INFO L87 Difference]: Start difference. First operand 229 states and 286 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 20:33:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:38,599 INFO L93 Difference]: Finished difference Result 514 states and 641 transitions. [2022-11-02 20:33:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:33:38,600 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 20:33:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:38,602 INFO L225 Difference]: With dead ends: 514 [2022-11-02 20:33:38,602 INFO L226 Difference]: Without dead ends: 355 [2022-11-02 20:33:38,603 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 20:33:38,604 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 347 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 560 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:33:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-02 20:33:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 229. [2022-11-02 20:33:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.236842105263158) internal successors, (282), 228 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 282 transitions. [2022-11-02 20:33:38,630 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 282 transitions. Word has length 71 [2022-11-02 20:33:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:38,630 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 282 transitions. [2022-11-02 20:33:38,631 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 20:33:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 282 transitions. [2022-11-02 20:33:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:38,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:38,632 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 20:33:38,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:38,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:38,835 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash 133513081, now seen corresponding path program 1 times [2022-11-02 20:33:38,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:38,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283578774] [2022-11-02 20:33:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:38,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:38,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:38,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:33:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:38,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:38,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:39,244 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 20:33:39,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:39,314 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 20:33:39,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283578774] [2022-11-02 20:33:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283578774] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:39,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:39,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:33:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965228444] [2022-11-02 20:33:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:39,317 INFO L87 Difference]: Start difference. First operand 229 states and 282 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 20:33:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:39,406 INFO L93 Difference]: Finished difference Result 637 states and 780 transitions. [2022-11-02 20:33:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:39,407 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 20:33:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:39,409 INFO L225 Difference]: With dead ends: 637 [2022-11-02 20:33:39,409 INFO L226 Difference]: Without dead ends: 470 [2022-11-02 20:33:39,410 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 20:33:39,411 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 122 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:39,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 202 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-02 20:33:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 283. [2022-11-02 20:33:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.2234042553191489) internal successors, (345), 282 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 345 transitions. [2022-11-02 20:33:39,433 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 345 transitions. Word has length 71 [2022-11-02 20:33:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:39,433 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 345 transitions. [2022-11-02 20:33:39,434 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 20:33:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 345 transitions. [2022-11-02 20:33:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:39,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:39,435 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 20:33:39,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:39,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash -559544583, now seen corresponding path program 1 times [2022-11-02 20:33:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:39,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630023988] [2022-11-02 20:33:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:39,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:39,654 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:39,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:33:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:39,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:39,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:40,045 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 20:33:40,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:40,119 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 20:33:40,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630023988] [2022-11-02 20:33:40,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630023988] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:40,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:40,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 20:33:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897356772] [2022-11-02 20:33:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:40,124 INFO L87 Difference]: Start difference. First operand 283 states and 345 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 20:33:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:40,214 INFO L93 Difference]: Finished difference Result 751 states and 912 transitions. [2022-11-02 20:33:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:40,215 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 20:33:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:40,217 INFO L225 Difference]: With dead ends: 751 [2022-11-02 20:33:40,217 INFO L226 Difference]: Without dead ends: 540 [2022-11-02 20:33:40,218 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 20:33:40,219 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 134 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:40,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 190 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-02 20:33:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 320. [2022-11-02 20:33:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.213166144200627) internal successors, (387), 319 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 387 transitions. [2022-11-02 20:33:40,242 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 387 transitions. Word has length 71 [2022-11-02 20:33:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:40,242 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 387 transitions. [2022-11-02 20:33:40,243 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 20:33:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 387 transitions. [2022-11-02 20:33:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:40,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:40,244 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 20:33:40,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:40,467 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1651420167, now seen corresponding path program 1 times [2022-11-02 20:33:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:40,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578166369] [2022-11-02 20:33:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:40,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:40,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:40,469 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:40,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:33:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:40,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:40,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:40,803 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 20:33:40,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:40,849 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 20:33:40,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:40,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578166369] [2022-11-02 20:33:40,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578166369] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:40,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:40,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:33:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199072896] [2022-11-02 20:33:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:40,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:40,868 INFO L87 Difference]: Start difference. First operand 320 states and 387 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 20:33:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:40,956 INFO L93 Difference]: Finished difference Result 752 states and 908 transitions. [2022-11-02 20:33:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:40,957 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 20:33:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:40,959 INFO L225 Difference]: With dead ends: 752 [2022-11-02 20:33:40,960 INFO L226 Difference]: Without dead ends: 508 [2022-11-02 20:33:40,960 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 20:33:40,961 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 79 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:40,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 263 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-02 20:33:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 320. [2022-11-02 20:33:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.1943573667711598) internal successors, (381), 319 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 381 transitions. [2022-11-02 20:33:40,984 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 381 transitions. Word has length 71 [2022-11-02 20:33:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:40,985 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 381 transitions. [2022-11-02 20:33:40,985 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 20:33:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 381 transitions. [2022-11-02 20:33:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:40,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:40,987 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 20:33:41,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:41,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:41,198 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2056741115, now seen corresponding path program 1 times [2022-11-02 20:33:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:41,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148272073] [2022-11-02 20:33:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:41,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:41,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:41,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:33:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:41,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 20:33:41,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:43,869 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 20:33:43,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:50,563 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 20:33:50,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148272073] [2022-11-02 20:33:50,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148272073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:50,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:50,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 20:33:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501351570] [2022-11-02 20:33:50,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:33:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:33:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2457, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:33:50,567 INFO L87 Difference]: Start difference. First operand 320 states and 381 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 20:33:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:51,387 INFO L93 Difference]: Finished difference Result 659 states and 781 transitions. [2022-11-02 20:33:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:33:51,387 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 20:33:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:51,390 INFO L225 Difference]: With dead ends: 659 [2022-11-02 20:33:51,390 INFO L226 Difference]: Without dead ends: 657 [2022-11-02 20:33:51,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=243, Invalid=3063, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:33:51,392 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:51,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1536 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 390 Unchecked, 0.0s Time] [2022-11-02 20:33:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-02 20:33:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 489. [2022-11-02 20:33:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.1926229508196722) internal successors, (582), 488 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 582 transitions. [2022-11-02 20:33:51,423 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 582 transitions. Word has length 71 [2022-11-02 20:33:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:51,424 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 582 transitions. [2022-11-02 20:33:51,424 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 20:33:51,424 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 582 transitions. [2022-11-02 20:33:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:51,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:51,426 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 20:33:51,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:51,634 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2106522489, now seen corresponding path program 1 times [2022-11-02 20:33:51,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:51,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348599120] [2022-11-02 20:33:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:51,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:51,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:51,637 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:51,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:33:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:51,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:33:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:51,971 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 20:33:51,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:52,019 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 20:33:52,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:52,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348599120] [2022-11-02 20:33:52,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348599120] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:33:52,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:33:52,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 20:33:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479106984] [2022-11-02 20:33:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:52,022 INFO L87 Difference]: Start difference. First operand 489 states and 582 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 20:33:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:52,124 INFO L93 Difference]: Finished difference Result 1129 states and 1336 transitions. [2022-11-02 20:33:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:52,125 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 20:33:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:52,128 INFO L225 Difference]: With dead ends: 1129 [2022-11-02 20:33:52,129 INFO L226 Difference]: Without dead ends: 767 [2022-11-02 20:33:52,130 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 20:33:52,133 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 20:33:52,133 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 20:33:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-02 20:33:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 489. [2022-11-02 20:33:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.1618852459016393) internal successors, (567), 488 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 567 transitions. [2022-11-02 20:33:52,178 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 567 transitions. Word has length 71 [2022-11-02 20:33:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:52,179 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 567 transitions. [2022-11-02 20:33:52,179 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 20:33:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 567 transitions. [2022-11-02 20:33:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:33:52,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:52,184 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 20:33:52,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:52,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash 826658811, now seen corresponding path program 1 times [2022-11-02 20:33:52,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:52,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401561626] [2022-11-02 20:33:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:52,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:52,404 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:52,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:33:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:52,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-02 20:33:52,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:54,769 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 20:33:54,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:01,996 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 20:34:01,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:01,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401561626] [2022-11-02 20:34:01,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401561626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:01,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:01,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2022-11-02 20:34:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588314156] [2022-11-02 20:34:01,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:01,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-02 20:34:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-02 20:34:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3087, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:34:02,000 INFO L87 Difference]: Start difference. First operand 489 states and 567 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 20:34:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:09,494 INFO L93 Difference]: Finished difference Result 1567 states and 1776 transitions. [2022-11-02 20:34:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 20:34:09,495 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 20:34:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:09,501 INFO L225 Difference]: With dead ends: 1567 [2022-11-02 20:34:09,502 INFO L226 Difference]: Without dead ends: 1565 [2022-11-02 20:34:09,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1156, Invalid=11276, Unknown=0, NotChecked=0, Total=12432 [2022-11-02 20:34:09,506 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 455 mSDsluCounter, 5370 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 5539 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1761 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:09,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 5539 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 187 Invalid, 0 Unknown, 1761 Unchecked, 0.3s Time] [2022-11-02 20:34:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-02 20:34:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 537. [2022-11-02 20:34:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.1735074626865671) internal successors, (629), 536 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 629 transitions. [2022-11-02 20:34:09,554 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 629 transitions. Word has length 71 [2022-11-02 20:34:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:09,554 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 629 transitions. [2022-11-02 20:34:09,555 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 20:34:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 629 transitions. [2022-11-02 20:34:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:34:09,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:09,557 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 20:34:09,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:09,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:09,772 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash -761689091, now seen corresponding path program 1 times [2022-11-02 20:34:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:09,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006941974] [2022-11-02 20:34:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:09,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:09,774 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:09,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:34:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:09,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:09,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:10,066 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 20:34:10,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:10,126 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 20:34:10,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:10,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006941974] [2022-11-02 20:34:10,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006941974] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:10,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:10,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:34:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978565563] [2022-11-02 20:34:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:10,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:34:10,130 INFO L87 Difference]: Start difference. First operand 537 states and 629 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 20:34:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:10,253 INFO L93 Difference]: Finished difference Result 1982 states and 2277 transitions. [2022-11-02 20:34:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:34:10,253 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 20:34:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:10,259 INFO L225 Difference]: With dead ends: 1982 [2022-11-02 20:34:10,259 INFO L226 Difference]: Without dead ends: 1513 [2022-11-02 20:34:10,260 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 20:34:10,261 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 20:34:10,261 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 20:34:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-11-02 20:34:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 731. [2022-11-02 20:34:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.1561643835616437) internal successors, (844), 730 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 844 transitions. [2022-11-02 20:34:10,307 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 844 transitions. Word has length 71 [2022-11-02 20:34:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:10,308 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 844 transitions. [2022-11-02 20:34:10,308 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 20:34:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 844 transitions. [2022-11-02 20:34:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:34:10,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:10,310 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 20:34:10,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:34:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:10,525 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1528258685, now seen corresponding path program 1 times [2022-11-02 20:34:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:10,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507876026] [2022-11-02 20:34:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:10,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:10,527 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:34:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:10,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:10,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:10,779 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 20:34:10,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:10,818 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 20:34:10,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507876026] [2022-11-02 20:34:10,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507876026] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:10,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:10,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 20:34:10,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153131176] [2022-11-02 20:34:10,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:10,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:10,820 INFO L87 Difference]: Start difference. First operand 731 states and 844 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 20:34:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:10,911 INFO L93 Difference]: Finished difference Result 1879 states and 2152 transitions. [2022-11-02 20:34:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:34:10,915 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 20:34:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:10,919 INFO L225 Difference]: With dead ends: 1879 [2022-11-02 20:34:10,919 INFO L226 Difference]: Without dead ends: 1274 [2022-11-02 20:34:10,920 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 20:34:10,921 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 111 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:10,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-11-02 20:34:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 731. [2022-11-02 20:34:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.115068493150685) internal successors, (814), 730 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 814 transitions. [2022-11-02 20:34:10,965 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 814 transitions. Word has length 71 [2022-11-02 20:34:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:10,965 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 814 transitions. [2022-11-02 20:34:10,965 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 20:34:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 814 transitions. [2022-11-02 20:34:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:34:10,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:10,968 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 20:34:10,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:11,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:11,183 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash -60089217, now seen corresponding path program 1 times [2022-11-02 20:34:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:11,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217313030] [2022-11-02 20:34:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:11,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:11,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:11,185 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:11,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:34:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-02 20:34:11,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:14,459 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 20:34:14,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:23,811 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 20:34:23,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:23,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217313030] [2022-11-02 20:34:23,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217313030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:23,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:23,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2022-11-02 20:34:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150736486] [2022-11-02 20:34:23,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-02 20:34:23,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-02 20:34:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=4297, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:34:23,816 INFO L87 Difference]: Start difference. First operand 731 states and 814 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 20:34:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:25,377 INFO L93 Difference]: Finished difference Result 1236 states and 1370 transitions. [2022-11-02 20:34:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:34:25,378 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 20:34:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:25,380 INFO L225 Difference]: With dead ends: 1236 [2022-11-02 20:34:25,381 INFO L226 Difference]: Without dead ends: 1234 [2022-11-02 20:34:25,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=339, Invalid=5513, Unknown=0, NotChecked=0, Total=5852 [2022-11-02 20:34:25,383 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 714 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:25,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 3320 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 714 Unchecked, 0.1s Time] [2022-11-02 20:34:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-11-02 20:34:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1115. [2022-11-02 20:34:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.114003590664273) internal successors, (1241), 1114 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1241 transitions. [2022-11-02 20:34:25,453 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1241 transitions. Word has length 71 [2022-11-02 20:34:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:25,453 INFO L495 AbstractCegarLoop]: Abstraction has 1115 states and 1241 transitions. [2022-11-02 20:34:25,454 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 20:34:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1241 transitions. [2022-11-02 20:34:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:34:25,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:25,456 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 20:34:25,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:25,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:25,670 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash 684933817, now seen corresponding path program 1 times [2022-11-02 20:34:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:25,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771172939] [2022-11-02 20:34:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:25,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:25,672 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:25,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:34:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:34:25,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:25,887 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 20:34:25,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:25,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:25,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771172939] [2022-11-02 20:34:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771172939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:25,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:25,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250180411] [2022-11-02 20:34:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:25,889 INFO L87 Difference]: Start difference. First operand 1115 states and 1241 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:25,993 INFO L93 Difference]: Finished difference Result 2302 states and 2555 transitions. [2022-11-02 20:34:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:25,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 20:34:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:25,996 INFO L225 Difference]: With dead ends: 2302 [2022-11-02 20:34:25,996 INFO L226 Difference]: Without dead ends: 1402 [2022-11-02 20:34:25,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:25,997 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 84 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:25,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 184 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2022-11-02 20:34:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1075. [2022-11-02 20:34:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.1135940409683427) internal successors, (1196), 1074 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1196 transitions. [2022-11-02 20:34:26,065 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1196 transitions. Word has length 71 [2022-11-02 20:34:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:26,066 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1196 transitions. [2022-11-02 20:34:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1196 transitions. [2022-11-02 20:34:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:34:26,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:26,068 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 20:34:26,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:26,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:26,284 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -895339661, now seen corresponding path program 2 times [2022-11-02 20:34:26,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164849653] [2022-11-02 20:34:26,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:26,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:26,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:26,286 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:26,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:34:26,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:34:26,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:26,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:34:26,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:27,507 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 20:34:27,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:34:33,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:33,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164849653] [2022-11-02 20:34:33,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164849653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:33,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:33,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:34:33,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449250737] [2022-11-02 20:34:33,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:33,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:34:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:33,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:34:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2276, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:34:33,566 INFO L87 Difference]: Start difference. First operand 1075 states and 1196 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 20:34:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:44,519 INFO L93 Difference]: Finished difference Result 2402 states and 2619 transitions. [2022-11-02 20:34:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-02 20:34:44,521 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 20:34:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:44,528 INFO L225 Difference]: With dead ends: 2402 [2022-11-02 20:34:44,528 INFO L226 Difference]: Without dead ends: 2400 [2022-11-02 20:34:44,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2745 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=2691, Invalid=12315, Unknown=0, NotChecked=0, Total=15006 [2022-11-02 20:34:44,532 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 631 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1534 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:44,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2520 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1157 Invalid, 0 Unknown, 1534 Unchecked, 1.2s Time] [2022-11-02 20:34:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2022-11-02 20:34:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 545. [2022-11-02 20:34:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.1102941176470589) internal successors, (604), 544 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 604 transitions. [2022-11-02 20:34:44,602 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 604 transitions. Word has length 71 [2022-11-02 20:34:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:44,603 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 604 transitions. [2022-11-02 20:34:44,603 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 20:34:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 604 transitions. [2022-11-02 20:34:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 20:34:44,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:44,605 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 20:34:44,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 20:34:44,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:44,820 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash -272216387, now seen corresponding path program 3 times [2022-11-02 20:34:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:44,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390955016] [2022-11-02 20:34:44,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:34:44,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:44,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:44,823 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:44,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:34:45,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:34:45,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:45,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-02 20:34:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:34:49,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:35:03,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390955016] [2022-11-02 20:35:03,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390955016] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:03,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:03,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 27] total 63 [2022-11-02 20:35:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620592855] [2022-11-02 20:35:03,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-02 20:35:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-02 20:35:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3741, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:35:03,767 INFO L87 Difference]: Start difference. First operand 545 states and 604 transitions. Second operand has 63 states, 63 states have (on average 2.634920634920635) internal successors, (166), 63 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:10,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:10,144 INFO L93 Difference]: Finished difference Result 1042 states and 1131 transitions. [2022-11-02 20:36:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-11-02 20:36:10,144 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.634920634920635) internal successors, (166), 63 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-11-02 20:36:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:10,147 INFO L225 Difference]: With dead ends: 1042 [2022-11-02 20:36:10,148 INFO L226 Difference]: Without dead ends: 1040 [2022-11-02 20:36:10,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 142 SyntacticMatches, 7 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8402 ImplicationChecksByTransitivity, 77.9s TimeCoverageRelationStatistics Valid=2497, Invalid=34559, Unknown=0, NotChecked=0, Total=37056 [2022-11-02 20:36:10,154 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 430 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3257 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:10,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 4363 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1203 Invalid, 0 Unknown, 3257 Unchecked, 1.4s Time] [2022-11-02 20:36:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2022-11-02 20:36:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 449. [2022-11-02 20:36:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.1071428571428572) internal successors, (496), 448 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 496 transitions. [2022-11-02 20:36:10,194 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 496 transitions. Word has length 102 [2022-11-02 20:36:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:10,195 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 496 transitions. [2022-11-02 20:36:10,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.634920634920635) internal successors, (166), 63 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 496 transitions. [2022-11-02 20:36:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 20:36:10,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:10,197 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, 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 20:36:10,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:36:10,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:10,411 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1905920577, now seen corresponding path program 2 times [2022-11-02 20:36:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:10,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921448771] [2022-11-02 20:36:10,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:10,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:10,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:10,414 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f438a068-f78a-4a22-93cb-42496d85f06a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:36:10,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:36:10,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:36:10,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-02 20:36:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 78 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:36:13,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:36:34,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921448771] [2022-11-02 20:36:34,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921448771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:34,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 53] total 94 [2022-11-02 20:36:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32350559] [2022-11-02 20:36:34,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-02 20:36:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-02 20:36:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=8399, Unknown=0, NotChecked=0, Total=8742 [2022-11-02 20:36:34,108 INFO L87 Difference]: Start difference. First operand 449 states and 496 transitions. Second operand has 94 states, 94 states have (on average 1.8829787234042554) internal successors, (177), 94 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)