./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.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_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/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_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/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_59531d2c-90ca-49bd-b15a-c8e73b186f91/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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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 20:38:39,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:39,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:40,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:40,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:40,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:40,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:40,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:40,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:40,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:40,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:40,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:40,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:40,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:40,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:40,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:40,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:40,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:40,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:40,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:40,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:40,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:40,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:40,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:40,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:40,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:40,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:40,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:40,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:40,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:40,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:40,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:40,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:40,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:40,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:40,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:40,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:40,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:40,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:40,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:40,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:40,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:38:40,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:40,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:40,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:40,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:40,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:40,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:40,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:40,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:40,106 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:40,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:40,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:40,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:40,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:40,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:40,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:40,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:40,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:40,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:40,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:40,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:40,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:40,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:40,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:40,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:40,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:40,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:40,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:40,111 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:38:40,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:38:40,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:40,112 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-02 20:38:40,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:40,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:40,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:40,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:40,408 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:40,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:38:40,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/aa74c1bed/3ad15d397ed4426694a00fac17e2a2f9/FLAGc27b86eec [2022-11-02 20:38:41,256 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:41,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:38:41,282 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/aa74c1bed/3ad15d397ed4426694a00fac17e2a2f9/FLAGc27b86eec [2022-11-02 20:38:41,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/aa74c1bed/3ad15d397ed4426694a00fac17e2a2f9 [2022-11-02 20:38:41,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:41,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:41,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:41,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:41,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:41,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cbf479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:41, skipping insertion in model container [2022-11-02 20:38:41,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:41" (1/1) ... [2022-11-02 20:38:41,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:41,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:41,800 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-02 20:38:42,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:42,138 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:42,148 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-02 20:38:42,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:42,284 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:42,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42 WrapperNode [2022-11-02 20:38:42,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:42,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:42,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:42,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:42,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,491 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1202 [2022-11-02 20:38:42,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:42,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:42,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:42,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:42,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:42,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:42,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:42,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:42,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (1/1) ... [2022-11-02 20:38:42,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:42,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:42,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:42,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:43,045 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:43,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:49,086 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:49,097 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:49,097 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:49,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:49 BoogieIcfgContainer [2022-11-02 20:39:49,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:49,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:49,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:49,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:49,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:41" (1/3) ... [2022-11-02 20:39:49,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2574566f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:49, skipping insertion in model container [2022-11-02 20:39:49,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:42" (2/3) ... [2022-11-02 20:39:49,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2574566f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:49, skipping insertion in model container [2022-11-02 20:39:49,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:49" (3/3) ... [2022-11-02 20:39:49,112 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:39:49,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:49,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:49,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:49,224 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;@34c2df87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:49,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 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 20:39:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:49,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:49,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:49,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 20:39:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:49,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040394837] [2022-11-02 20:39:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,128 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 20:39:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040394837] [2022-11-02 20:39:50,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040394837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:50,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:50,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971710573] [2022-11-02 20:39:50,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:50,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:50,179 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 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 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:52,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:52,456 INFO L93 Difference]: Finished difference Result 165 states and 245 transitions. [2022-11-02 20:39:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:52,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:39:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:52,471 INFO L225 Difference]: With dead ends: 165 [2022-11-02 20:39:52,472 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 20:39:52,474 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 20:39:52,479 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 149 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 226 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:39:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 20:39:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2022-11-02 20:39:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2022-11-02 20:39:52,525 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 11 [2022-11-02 20:39:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:52,526 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2022-11-02 20:39:52,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2022-11-02 20:39:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:52,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:52,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:52,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 20:39:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262524260] [2022-11-02 20:39:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:52,793 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 20:39:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:52,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262524260] [2022-11-02 20:39:52,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262524260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:52,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:52,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778782526] [2022-11-02 20:39:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:52,798 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:54,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:54,989 INFO L93 Difference]: Finished difference Result 161 states and 232 transitions. [2022-11-02 20:39:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:54,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:39:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:54,991 INFO L225 Difference]: With dead ends: 161 [2022-11-02 20:39:54,991 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 20:39:54,991 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 20:39:54,993 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 143 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:54,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 226 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:39:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 20:39:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 59. [2022-11-02 20:39:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 0 states have call successors, (0), 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 20:39:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2022-11-02 20:39:55,008 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 11 [2022-11-02 20:39:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:55,008 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2022-11-02 20:39:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2022-11-02 20:39:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:55,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:55,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:55,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:55,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 20:39:55,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:55,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601782172] [2022-11-02 20:39:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:55,230 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 20:39:55,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601782172] [2022-11-02 20:39:55,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601782172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:55,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:55,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533416026] [2022-11-02 20:39:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:55,245 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:57,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:39:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:57,450 INFO L93 Difference]: Finished difference Result 161 states and 231 transitions. [2022-11-02 20:39:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:39:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:57,452 INFO L225 Difference]: With dead ends: 161 [2022-11-02 20:39:57,452 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 20:39:57,453 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 20:39:57,454 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 137 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:57,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 226 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:39:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 20:39:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 61. [2022-11-02 20:39:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 0 states have call successors, (0), 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 20:39:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2022-11-02 20:39:57,463 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 11 [2022-11-02 20:39:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:57,463 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2022-11-02 20:39:57,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:39:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2022-11-02 20:39:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:57,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:57,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:57,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:39:57,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 20:39:57,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:57,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439601733] [2022-11-02 20:39:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:57,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:57,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:57,796 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:57,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:39:57,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:39:57,805 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:39:57,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:39:57,873 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:39:57,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:39:57 BoogieIcfgContainer [2022-11-02 20:39:57,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:39:57,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:39:57,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:39:57,902 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:39:57,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:49" (3/4) ... [2022-11-02 20:39:57,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:39:57,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:39:57,908 INFO L158 Benchmark]: Toolchain (without parser) took 76446.01ms. Allocated memory was 96.5MB in the beginning and 494.9MB in the end (delta: 398.5MB). Free memory was 65.0MB in the beginning and 198.9MB in the end (delta: -133.9MB). Peak memory consumption was 265.1MB. Max. memory is 16.1GB. [2022-11-02 20:39:57,909 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:57,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.27ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 64.5MB in the end (delta: 234.1kB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-02 20:39:57,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 183.76ms. Allocated memory is still 146.8MB. Free memory was 116.1MB in the beginning and 88.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-02 20:39:57,911 INFO L158 Benchmark]: Boogie Preprocessor took 170.95ms. Allocated memory is still 146.8MB. Free memory was 88.8MB in the beginning and 75.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:39:57,913 INFO L158 Benchmark]: RCFGBuilder took 66435.86ms. Allocated memory was 146.8MB in the beginning and 494.9MB in the end (delta: 348.1MB). Free memory was 75.1MB in the beginning and 200.6MB in the end (delta: -125.5MB). Peak memory consumption was 279.3MB. Max. memory is 16.1GB. [2022-11-02 20:39:57,913 INFO L158 Benchmark]: TraceAbstraction took 8797.38ms. Allocated memory is still 494.9MB. Free memory was 199.6MB in the beginning and 199.9MB in the end (delta: -355.4kB). Peak memory consumption was 695.1kB. Max. memory is 16.1GB. [2022-11-02 20:39:57,913 INFO L158 Benchmark]: Witness Printer took 5.54ms. Allocated memory is still 494.9MB. Free memory was 199.9MB in the beginning and 198.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:57,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.27ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 64.5MB in the end (delta: 234.1kB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 183.76ms. Allocated memory is still 146.8MB. Free memory was 116.1MB in the beginning and 88.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 170.95ms. Allocated memory is still 146.8MB. Free memory was 88.8MB in the beginning and 75.1MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 66435.86ms. Allocated memory was 146.8MB in the beginning and 494.9MB in the end (delta: 348.1MB). Free memory was 75.1MB in the beginning and 200.6MB in the end (delta: -125.5MB). Peak memory consumption was 279.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8797.38ms. Allocated memory is still 494.9MB. Free memory was 199.6MB in the beginning and 199.9MB in the end (delta: -355.4kB). Peak memory consumption was 695.1kB. Max. memory is 16.1GB. * Witness Printer took 5.54ms. Allocated memory is still 494.9MB. Free memory was 199.9MB in the beginning and 198.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 182, overapproximation of bitwiseAnd at line 178. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_14 = 0; [L39] const SORT_4 var_43 = 1; [L40] const SORT_4 var_44 = 0; [L41] const SORT_2 var_54 = 0; [L42] const SORT_2 var_56 = 3; [L43] const SORT_2 var_59 = 2; [L44] const SORT_2 var_62 = 1; [L45] const SORT_2 var_70 = 255; [L46] const SORT_3 var_74 = 0; [L47] const SORT_4 var_78 = 255; [L49] SORT_1 input_53; [L50] SORT_1 input_55; [L51] SORT_1 input_57; [L52] SORT_1 input_58; [L53] SORT_1 input_60; [L54] SORT_1 input_61; [L55] SORT_1 input_71; [L56] SORT_1 input_72; [L57] SORT_1 input_73; [L58] SORT_1 input_90; [L59] SORT_1 input_91; [L60] SORT_1 input_106; [L61] SORT_1 input_107; [L62] SORT_1 input_124; [L63] SORT_1 input_132; [L64] SORT_1 input_140; [L65] SORT_1 input_148; [L66] SORT_1 input_156; [L67] SORT_1 input_164; [L69] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_2 init_7_arg_1 = var_5; [L89] state_6 = init_7_arg_1 [L90] SORT_2 init_9_arg_1 = var_5; [L91] state_8 = init_9_arg_1 [L92] SORT_2 init_11_arg_1 = var_5; [L93] state_10 = init_11_arg_1 [L94] SORT_2 init_13_arg_1 = var_5; [L95] state_12 = init_13_arg_1 [L96] SORT_1 init_16_arg_1 = var_14; [L97] state_15 = init_16_arg_1 [L98] SORT_1 init_18_arg_1 = var_14; [L99] state_17 = init_18_arg_1 [L100] SORT_1 init_20_arg_1 = var_14; [L101] state_19 = init_20_arg_1 [L102] SORT_1 init_22_arg_1 = var_14; [L103] state_21 = init_22_arg_1 [L104] SORT_1 init_24_arg_1 = var_14; [L105] state_23 = init_24_arg_1 [L106] SORT_1 init_26_arg_1 = var_14; [L107] state_25 = init_26_arg_1 [L108] SORT_1 init_28_arg_1 = var_14; [L109] state_27 = init_28_arg_1 [L110] SORT_1 init_30_arg_1 = var_14; [L111] state_29 = init_30_arg_1 [L112] SORT_1 init_32_arg_1 = var_14; [L113] state_31 = init_32_arg_1 [L114] SORT_1 init_34_arg_1 = var_14; [L115] state_33 = init_34_arg_1 [L116] SORT_1 init_36_arg_1 = var_14; [L117] state_35 = init_36_arg_1 [L118] SORT_1 init_38_arg_1 = var_14; [L119] state_37 = init_38_arg_1 [L120] SORT_1 init_40_arg_1 = var_14; [L121] state_39 = init_40_arg_1 [L122] SORT_1 init_42_arg_1 = var_14; [L123] state_41 = init_42_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L126] input_53 = __VERIFIER_nondet_uchar() [L127] input_53 = input_53 & mask_SORT_1 [L128] input_55 = __VERIFIER_nondet_uchar() [L129] input_55 = input_55 & mask_SORT_1 [L130] input_57 = __VERIFIER_nondet_uchar() [L131] input_57 = input_57 & mask_SORT_1 [L132] input_58 = __VERIFIER_nondet_uchar() [L133] input_58 = input_58 & mask_SORT_1 [L134] input_60 = __VERIFIER_nondet_uchar() [L135] input_60 = input_60 & mask_SORT_1 [L136] input_61 = __VERIFIER_nondet_uchar() [L137] input_61 = input_61 & mask_SORT_1 [L138] input_71 = __VERIFIER_nondet_uchar() [L139] input_71 = input_71 & mask_SORT_1 [L140] input_72 = __VERIFIER_nondet_uchar() [L141] input_72 = input_72 & mask_SORT_1 [L142] input_73 = __VERIFIER_nondet_uchar() [L143] input_73 = input_73 & mask_SORT_1 [L144] input_90 = __VERIFIER_nondet_uchar() [L145] input_90 = input_90 & mask_SORT_1 [L146] input_91 = __VERIFIER_nondet_uchar() [L147] input_91 = input_91 & mask_SORT_1 [L148] input_106 = __VERIFIER_nondet_uchar() [L149] input_106 = input_106 & mask_SORT_1 [L150] input_107 = __VERIFIER_nondet_uchar() [L151] input_107 = input_107 & mask_SORT_1 [L152] input_124 = __VERIFIER_nondet_uchar() [L153] input_132 = __VERIFIER_nondet_uchar() [L154] input_140 = __VERIFIER_nondet_uchar() [L155] input_148 = __VERIFIER_nondet_uchar() [L156] input_156 = __VERIFIER_nondet_uchar() [L157] input_164 = __VERIFIER_nondet_uchar() [L160] SORT_1 var_45_arg_0 = state_23; [L161] SORT_4 var_45_arg_1 = var_43; [L162] SORT_4 var_45_arg_2 = var_44; VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45_arg_0=0, var_45_arg_1=1, var_45_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L163] EXPR var_45_arg_0 ? var_45_arg_1 : var_45_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45_arg_0=0, var_45_arg_0 ? var_45_arg_1 : var_45_arg_2=0, var_45_arg_1=1, var_45_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L163] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L164] SORT_1 var_46_arg_0 = state_31; [L165] SORT_4 var_46_arg_1 = var_43; [L166] SORT_4 var_46_arg_2 = var_44; VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45=0, var_45_arg_0=0, var_45_arg_1=1, var_45_arg_2=0, var_46_arg_0=0, var_46_arg_1=1, var_46_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L167] EXPR var_46_arg_0 ? var_46_arg_1 : var_46_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45=0, var_45_arg_0=0, var_45_arg_1=1, var_45_arg_2=0, var_46_arg_0=0, var_46_arg_0 ? var_46_arg_1 : var_46_arg_2=0, var_46_arg_1=1, var_46_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L167] SORT_4 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L168] SORT_4 var_47_arg_0 = var_45; [L169] SORT_4 var_47_arg_1 = var_46; [L170] SORT_4 var_47 = var_47_arg_0 + var_47_arg_1; [L171] SORT_1 var_48_arg_0 = state_39; [L172] SORT_4 var_48_arg_1 = var_43; [L173] SORT_4 var_48_arg_2 = var_44; VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45=0, var_45_arg_0=0, var_45_arg_1=1, var_45_arg_2=0, var_46=0, var_46_arg_0=0, var_46_arg_1=1, var_46_arg_2=0, var_47=0, var_47_arg_0=0, var_47_arg_1=0, var_48_arg_0=0, var_48_arg_1=1, var_48_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L174] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_124=6, input_132=1, input_140=2, input_148=3, input_156=5, input_164=4, input_53=0, input_55=1, input_57=0, input_58=0, input_60=0, input_61=0, input_71=0, input_72=0, input_73=0, input_90=1, input_91=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_45=0, var_45_arg_0=0, var_45_arg_1=1, var_45_arg_2=0, var_46=0, var_46_arg_0=0, var_46_arg_1=1, var_46_arg_2=0, var_47=0, var_47_arg_0=0, var_47_arg_1=0, var_48_arg_0=0, var_48_arg_0 ? var_48_arg_1 : var_48_arg_2=0, var_48_arg_1=1, var_48_arg_2=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L174] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L175] SORT_4 var_49_arg_0 = var_47; [L176] SORT_4 var_49_arg_1 = var_48; [L177] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L178] var_49 = var_49 & mask_SORT_4 [L179] SORT_4 var_50_arg_0 = var_49; [L180] SORT_4 var_50_arg_1 = var_43; [L181] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L182] SORT_1 var_51_arg_0 = ~state_41; [L183] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L184] SORT_1 var_51_arg_1 = ~var_50; [L185] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L186] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L187] var_51 = var_51 & mask_SORT_1 [L188] SORT_1 bad_52_arg_0 = var_51; [L189] CALL __VERIFIER_assert(!(bad_52_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, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 429 mSDsluCounter, 678 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 228 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 147 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 20:39:58,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/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_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/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_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/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_59531d2c-90ca-49bd-b15a-c8e73b186f91/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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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 20:40:00,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:40:00,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:40:00,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:40:00,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:40:00,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:40:00,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:40:00,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:40:00,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:40:00,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:40:00,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:40:00,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:40:00,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:40:00,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:40:00,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:40:00,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:40:00,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:40:00,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:40:00,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:40:00,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:40:00,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:40:00,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:40:00,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:40:00,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:40:00,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:40:00,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:40:00,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:40:00,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:40:00,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:40:00,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:40:00,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:40:00,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:40:00,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:40:00,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:40:00,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:40:00,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:40:00,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:40:00,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:40:00,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:40:00,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:40:00,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:40:00,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:40:00,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:40:00,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:40:00,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:40:00,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:40:00,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:40:00,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:40:00,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:40:00,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:40:00,490 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:40:00,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:40:00,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:40:00,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:40:00,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:40:00,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:40:00,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:40:00,493 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:40:00,493 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:40:00,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:40:00,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:40:00,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:40:00,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:40:00,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:40:00,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:40:00,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:00,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:40:00,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:40:00,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:40:00,496 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:40:00,496 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:40:00,496 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:40:00,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:40:00,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:40:00,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:40:00,498 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-02 20:40:00,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:40:00,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:40:00,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:40:00,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:40:00,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:40:00,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:40:01,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/368bf99d1/5cbbc7f18c704e8085c861f8c97da779/FLAG043d60524 [2022-11-02 20:40:01,798 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:40:01,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:40:01,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/368bf99d1/5cbbc7f18c704e8085c861f8c97da779/FLAG043d60524 [2022-11-02 20:40:02,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/data/368bf99d1/5cbbc7f18c704e8085c861f8c97da779 [2022-11-02 20:40:02,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:40:02,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:40:02,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:02,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:40:02,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:40:02,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0e7829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02, skipping insertion in model container [2022-11-02 20:40:02,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:40:02,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:40:02,287 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-02 20:40:02,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:02,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:40:02,634 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_59531d2c-90ca-49bd-b15a-c8e73b186f91/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-02 20:40:02,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:02,736 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:40:02,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02 WrapperNode [2022-11-02 20:40:02,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:02,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:02,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:40:02,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:40:02,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,876 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1202 [2022-11-02 20:40:02,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:02,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:40:02,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:40:02,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:40:02,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:02,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:03,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:40:03,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:40:03,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:40:03,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:40:03,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (1/1) ... [2022-11-02 20:40:03,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:03,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:40:03,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:40:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:40:03,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:40:03,497 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:40:03,499 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:40:05,038 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:40:05,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:40:05,046 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:40:05,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:05 BoogieIcfgContainer [2022-11-02 20:40:05,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:40:05,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:40:05,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:40:05,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:40:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:40:02" (1/3) ... [2022-11-02 20:40:05,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e0b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:05, skipping insertion in model container [2022-11-02 20:40:05,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:02" (2/3) ... [2022-11-02 20:40:05,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e0b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:05, skipping insertion in model container [2022-11-02 20:40:05,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:05" (3/3) ... [2022-11-02 20:40:05,057 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-02 20:40:05,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:40:05,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:40:05,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:05,135 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;@4bb03f24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:05,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:40:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 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 20:40:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:05,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:05,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:05,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 20:40:05,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:05,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095954125] [2022-11-02 20:40:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:05,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:05,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:40:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:40:05,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:05,612 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 20:40:05,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:05,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:05,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095954125] [2022-11-02 20:40:05,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095954125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:05,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:05,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131153674] [2022-11-02 20:40:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:05,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:05,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:05,660 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 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 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:05,856 INFO L93 Difference]: Finished difference Result 217 states and 323 transitions. [2022-11-02 20:40:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:05,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:40:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:05,869 INFO L225 Difference]: With dead ends: 217 [2022-11-02 20:40:05,869 INFO L226 Difference]: Without dead ends: 160 [2022-11-02 20:40:05,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:40:05,876 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 223 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:05,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 301 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-02 20:40:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 57. [2022-11-02 20:40:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2022-11-02 20:40:05,918 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 11 [2022-11-02 20:40:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:05,919 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2022-11-02 20:40:05,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2022-11-02 20:40:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:05,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:05,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:05,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:06,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 20:40:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:06,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189471686] [2022-11-02 20:40:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:06,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:06,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:06,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:06,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:40:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:06,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:40:06,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:06,501 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 20:40:06,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:06,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189471686] [2022-11-02 20:40:06,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189471686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:06,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:06,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214244453] [2022-11-02 20:40:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:06,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:06,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:06,515 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:06,723 INFO L93 Difference]: Finished difference Result 213 states and 307 transitions. [2022-11-02 20:40:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:06,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:40:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:06,725 INFO L225 Difference]: With dead ends: 213 [2022-11-02 20:40:06,725 INFO L226 Difference]: Without dead ends: 160 [2022-11-02 20:40:06,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:40:06,727 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 217 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:06,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 300 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:40:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-02 20:40:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 59. [2022-11-02 20:40:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 0 states have call successors, (0), 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 20:40:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2022-11-02 20:40:06,737 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 11 [2022-11-02 20:40:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:06,737 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2022-11-02 20:40:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2022-11-02 20:40:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:06,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:06,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:06,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:06,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:06,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 20:40:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:06,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856872379] [2022-11-02 20:40:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:06,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:06,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:06,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:07,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:40:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:07,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:40:07,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:07,247 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 20:40:07,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:07,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856872379] [2022-11-02 20:40:07,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856872379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:07,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:07,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985118038] [2022-11-02 20:40:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:07,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:07,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:07,251 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:07,438 INFO L93 Difference]: Finished difference Result 213 states and 306 transitions. [2022-11-02 20:40:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:40:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:07,448 INFO L225 Difference]: With dead ends: 213 [2022-11-02 20:40:07,448 INFO L226 Difference]: Without dead ends: 160 [2022-11-02 20:40:07,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:40:07,450 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 211 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:07,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 299 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:40:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-02 20:40:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 61. [2022-11-02 20:40:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 0 states have call successors, (0), 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 20:40:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2022-11-02 20:40:07,464 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 11 [2022-11-02 20:40:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:07,464 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2022-11-02 20:40:07,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2022-11-02 20:40:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:07,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:07,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:07,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:07,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 20:40:07,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:07,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833704712] [2022-11-02 20:40:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:07,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:07,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:07,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:40:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:07,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:40:07,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:08,276 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 20:40:08,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:08,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833704712] [2022-11-02 20:40:08,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833704712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:08,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:08,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:40:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988709701] [2022-11-02 20:40:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:08,286 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:09,468 INFO L93 Difference]: Finished difference Result 237 states and 337 transitions. [2022-11-02 20:40:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:40:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:40:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:09,470 INFO L225 Difference]: With dead ends: 237 [2022-11-02 20:40:09,470 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 20:40:09,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:40:09,472 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 510 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 694 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:40:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 20:40:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 67. [2022-11-02 20:40:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 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 20:40:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2022-11-02 20:40:09,482 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 11 [2022-11-02 20:40:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:09,483 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2022-11-02 20:40:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:40:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2022-11-02 20:40:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:09,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:09,485 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, 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 20:40:09,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:09,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:09,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash 302759193, now seen corresponding path program 1 times [2022-11-02 20:40:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:09,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139388563] [2022-11-02 20:40:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:09,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:09,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:40:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:10,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:40:10,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:10,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:10,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:10,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139388563] [2022-11-02 20:40:10,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139388563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:10,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805300970] [2022-11-02 20:40:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:10,653 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 20:40:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:10,794 INFO L93 Difference]: Finished difference Result 158 states and 225 transitions. [2022-11-02 20:40:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:40:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 62 [2022-11-02 20:40:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:10,796 INFO L225 Difference]: With dead ends: 158 [2022-11-02 20:40:10,796 INFO L226 Difference]: Without dead ends: 99 [2022-11-02 20:40:10,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:40:10,798 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 52 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:10,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 339 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-02 20:40:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-02 20:40:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-02 20:40:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4183673469387754) internal successors, (139), 98 states have internal predecessors, (139), 0 states have call successors, (0), 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 20:40:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2022-11-02 20:40:10,807 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 62 [2022-11-02 20:40:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:10,808 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2022-11-02 20:40:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 20:40:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2022-11-02 20:40:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:10,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:10,810 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, 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 20:40:10,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:11,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:11,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2108197527, now seen corresponding path program 1 times [2022-11-02 20:40:11,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:11,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592971452] [2022-11-02 20:40:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:11,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:11,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:40:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:12,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:12,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592971452] [2022-11-02 20:40:12,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592971452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:12,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:12,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:40:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948398370] [2022-11-02 20:40:12,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:12,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:40:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:40:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:40:12,846 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 20:40:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:12,921 INFO L93 Difference]: Finished difference Result 278 states and 399 transitions. [2022-11-02 20:40:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:40:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 62 [2022-11-02 20:40:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:12,924 INFO L225 Difference]: With dead ends: 278 [2022-11-02 20:40:12,924 INFO L226 Difference]: Without dead ends: 219 [2022-11-02 20:40:12,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:40:12,926 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 320 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:12,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 876 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2022-11-02 20:40:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-02 20:40:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 164. [2022-11-02 20:40:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4355828220858895) internal successors, (234), 163 states have internal predecessors, (234), 0 states have call successors, (0), 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 20:40:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2022-11-02 20:40:12,938 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 62 [2022-11-02 20:40:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:12,938 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2022-11-02 20:40:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 20:40:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2022-11-02 20:40:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:12,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:12,941 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, 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 20:40:12,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:13,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1298850901, now seen corresponding path program 1 times [2022-11-02 20:40:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063795422] [2022-11-02 20:40:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:13,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:13,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:13,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:40:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:13,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:13,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:14,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:14,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063795422] [2022-11-02 20:40:14,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063795422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:14,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:14,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:40:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299931809] [2022-11-02 20:40:14,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:14,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:40:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:40:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:40:14,806 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 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 20:40:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:14,870 INFO L93 Difference]: Finished difference Result 347 states and 501 transitions. [2022-11-02 20:40:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:40:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 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 62 [2022-11-02 20:40:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:14,874 INFO L225 Difference]: With dead ends: 347 [2022-11-02 20:40:14,874 INFO L226 Difference]: Without dead ends: 288 [2022-11-02 20:40:14,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:40:14,876 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 187 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:14,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 482 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-02 20:40:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-02 20:40:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-02 20:40:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.4425087108013936) internal successors, (414), 287 states have internal predecessors, (414), 0 states have call successors, (0), 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 20:40:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 414 transitions. [2022-11-02 20:40:14,891 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 414 transitions. Word has length 62 [2022-11-02 20:40:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 414 transitions. [2022-11-02 20:40:14,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 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 20:40:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 414 transitions. [2022-11-02 20:40:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:14,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:14,895 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 20:40:14,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:15,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1356109203, now seen corresponding path program 1 times [2022-11-02 20:40:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:15,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053615419] [2022-11-02 20:40:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:15,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:15,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:15,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:40:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:40:15,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:16,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:24,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:24,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053615419] [2022-11-02 20:40:24,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053615419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:24,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:24,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:40:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219893749] [2022-11-02 20:40:24,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:40:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:40:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:40:24,298 INFO L87 Difference]: Start difference. First operand 288 states and 414 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:24,557 INFO L93 Difference]: Finished difference Result 536 states and 773 transitions. [2022-11-02 20:40:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:40:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:24,560 INFO L225 Difference]: With dead ends: 536 [2022-11-02 20:40:24,560 INFO L226 Difference]: Without dead ends: 534 [2022-11-02 20:40:24,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:40:24,561 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 314 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:24,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 612 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-02 20:40:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-02 20:40:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 526. [2022-11-02 20:40:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.4495238095238094) internal successors, (761), 525 states have internal predecessors, (761), 0 states have call successors, (0), 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 20:40:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 761 transitions. [2022-11-02 20:40:24,599 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 761 transitions. Word has length 62 [2022-11-02 20:40:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:24,601 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 761 transitions. [2022-11-02 20:40:24,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 761 transitions. [2022-11-02 20:40:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:24,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:24,610 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 20:40:24,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:24,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2057173781, now seen corresponding path program 1 times [2022-11-02 20:40:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:24,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818517038] [2022-11-02 20:40:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:24,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:24,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:40:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:25,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:40:25,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:26,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:34,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:34,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818517038] [2022-11-02 20:40:34,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818517038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:34,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:34,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:40:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990199749] [2022-11-02 20:40:34,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:34,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:40:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:40:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 20:40:34,998 INFO L87 Difference]: Start difference. First operand 526 states and 761 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:35,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:35,228 INFO L93 Difference]: Finished difference Result 670 states and 965 transitions. [2022-11-02 20:40:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:40:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:35,232 INFO L225 Difference]: With dead ends: 670 [2022-11-02 20:40:35,232 INFO L226 Difference]: Without dead ends: 668 [2022-11-02 20:40:35,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 20:40:35,233 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 299 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:35,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 681 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-02 20:40:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-02 20:40:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 660. [2022-11-02 20:40:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 1.4461305007587253) internal successors, (953), 659 states have internal predecessors, (953), 0 states have call successors, (0), 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 20:40:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 953 transitions. [2022-11-02 20:40:35,257 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 953 transitions. Word has length 62 [2022-11-02 20:40:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:35,258 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 953 transitions. [2022-11-02 20:40:35,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 953 transitions. [2022-11-02 20:40:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:35,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:35,261 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 20:40:35,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:35,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 777310103, now seen corresponding path program 1 times [2022-11-02 20:40:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:35,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967900466] [2022-11-02 20:40:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:35,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:35,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:35,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:35,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:40:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:36,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:40:36,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:37,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:46,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967900466] [2022-11-02 20:40:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967900466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:46,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:46,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:40:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57535102] [2022-11-02 20:40:46,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:46,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:40:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:40:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=228, Unknown=3, NotChecked=0, Total=306 [2022-11-02 20:40:46,490 INFO L87 Difference]: Start difference. First operand 660 states and 953 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:46,857 INFO L93 Difference]: Finished difference Result 970 states and 1397 transitions. [2022-11-02 20:40:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:40:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:46,861 INFO L225 Difference]: With dead ends: 970 [2022-11-02 20:40:46,861 INFO L226 Difference]: Without dead ends: 968 [2022-11-02 20:40:46,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=91, Invalid=286, Unknown=3, NotChecked=0, Total=380 [2022-11-02 20:40:46,863 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 230 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 745 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-11-02 20:40:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-02 20:40:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 960. [2022-11-02 20:40:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.4442127215849843) internal successors, (1385), 959 states have internal predecessors, (1385), 0 states have call successors, (0), 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 20:40:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1385 transitions. [2022-11-02 20:40:46,903 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1385 transitions. Word has length 62 [2022-11-02 20:40:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:46,904 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1385 transitions. [2022-11-02 20:40:46,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1385 transitions. [2022-11-02 20:40:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:46,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:46,906 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, 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 20:40:46,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:47,125 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1401565479, now seen corresponding path program 1 times [2022-11-02 20:40:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:47,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41860847] [2022-11-02 20:40:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:47,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:47,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:47,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:47,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:40:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:47,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:40:47,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:48,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:56,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41860847] [2022-11-02 20:40:56,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41860847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:56,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:56,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:40:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334141281] [2022-11-02 20:40:56,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:40:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:40:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:40:56,690 INFO L87 Difference]: Start difference. First operand 960 states and 1385 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:56,984 INFO L93 Difference]: Finished difference Result 1100 states and 1587 transitions. [2022-11-02 20:40:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:40:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:56,989 INFO L225 Difference]: With dead ends: 1100 [2022-11-02 20:40:56,989 INFO L226 Difference]: Without dead ends: 1098 [2022-11-02 20:40:56,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:40:56,991 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 154 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:56,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 776 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-02 20:40:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-02 20:40:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1092. [2022-11-02 20:40:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1091 states have (on average 1.4454628780934922) internal successors, (1577), 1091 states have internal predecessors, (1577), 0 states have call successors, (0), 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 20:40:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1577 transitions. [2022-11-02 20:40:57,060 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1577 transitions. Word has length 62 [2022-11-02 20:40:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:57,061 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1577 transitions. [2022-11-02 20:40:57,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1577 transitions. [2022-11-02 20:40:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:40:57,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:57,064 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, 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 20:40:57,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 20:40:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:57,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1613538139, now seen corresponding path program 1 times [2022-11-02 20:40:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163859012] [2022-11-02 20:40:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:57,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:57,281 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:57,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:40:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:57,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 20:40:57,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:59,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:02,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163859012] [2022-11-02 20:41:02,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163859012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:02,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:02,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:41:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72046835] [2022-11-02 20:41:02,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:02,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:41:02,802 INFO L87 Difference]: Start difference. First operand 1092 states and 1577 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:03,175 INFO L93 Difference]: Finished difference Result 1538 states and 2221 transitions. [2022-11-02 20:41:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:41:03,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:41:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:03,180 INFO L225 Difference]: With dead ends: 1538 [2022-11-02 20:41:03,180 INFO L226 Difference]: Without dead ends: 1536 [2022-11-02 20:41:03,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:41:03,182 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 324 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:03,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 714 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-02 20:41:03,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-11-02 20:41:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1522. [2022-11-02 20:41:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 1.4483892176199868) internal successors, (2203), 1521 states have internal predecessors, (2203), 0 states have call successors, (0), 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 20:41:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2203 transitions. [2022-11-02 20:41:03,256 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2203 transitions. Word has length 62 [2022-11-02 20:41:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:03,257 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2203 transitions. [2022-11-02 20:41:03,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2203 transitions. [2022-11-02 20:41:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:41:03,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:03,259 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 20:41:03,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:03,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:03,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1381216613, now seen corresponding path program 1 times [2022-11-02 20:41:03,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:03,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043268174] [2022-11-02 20:41:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:03,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:03,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:03,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:41:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:04,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 20:41:04,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:05,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:13,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:13,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043268174] [2022-11-02 20:41:13,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043268174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:13,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:13,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:41:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738740320] [2022-11-02 20:41:13,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:41:13,560 INFO L87 Difference]: Start difference. First operand 1522 states and 2203 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:13,883 INFO L93 Difference]: Finished difference Result 2328 states and 3363 transitions. [2022-11-02 20:41:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:41:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:41:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:13,891 INFO L225 Difference]: With dead ends: 2328 [2022-11-02 20:41:13,891 INFO L226 Difference]: Without dead ends: 2326 [2022-11-02 20:41:13,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:41:13,903 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 292 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:13,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 835 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-11-02 20:41:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2022-11-02 20:41:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 2318. [2022-11-02 20:41:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.4462667242123435) internal successors, (3351), 2317 states have internal predecessors, (3351), 0 states have call successors, (0), 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 20:41:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3351 transitions. [2022-11-02 20:41:14,041 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3351 transitions. Word has length 62 [2022-11-02 20:41:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:14,042 INFO L495 AbstractCegarLoop]: Abstraction has 2318 states and 3351 transitions. [2022-11-02 20:41:14,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3351 transitions. [2022-11-02 20:41:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:41:14,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:14,045 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 20:41:14,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:14,262 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -958514787, now seen corresponding path program 1 times [2022-11-02 20:41:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:14,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255310967] [2022-11-02 20:41:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:14,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:14,265 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:14,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:41:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 20:41:14,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:16,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:23,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:23,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255310967] [2022-11-02 20:41:23,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255310967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:23,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:23,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:41:23,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238432979] [2022-11-02 20:41:23,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:23,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:23,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:41:24,000 INFO L87 Difference]: Start difference. First operand 2318 states and 3351 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:24,506 INFO L93 Difference]: Finished difference Result 2750 states and 3977 transitions. [2022-11-02 20:41:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:41:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:41:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:24,514 INFO L225 Difference]: With dead ends: 2750 [2022-11-02 20:41:24,514 INFO L226 Difference]: Without dead ends: 2748 [2022-11-02 20:41:24,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:41:24,516 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 262 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:24,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 622 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-02 20:41:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2022-11-02 20:41:24,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2742. [2022-11-02 20:41:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2741 states have (on average 1.4472820138635534) internal successors, (3967), 2741 states have internal predecessors, (3967), 0 states have call successors, (0), 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 20:41:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 3967 transitions. [2022-11-02 20:41:24,675 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 3967 transitions. Word has length 62 [2022-11-02 20:41:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:24,676 INFO L495 AbstractCegarLoop]: Abstraction has 2742 states and 3967 transitions. [2022-11-02 20:41:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 3967 transitions. [2022-11-02 20:41:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:41:24,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:24,678 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, 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 20:41:24,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:24,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:24,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 734875101, now seen corresponding path program 1 times [2022-11-02 20:41:24,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:24,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315163079] [2022-11-02 20:41:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:24,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:24,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:24,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:24,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:41:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:25,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 20:41:25,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:26,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:35,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:35,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315163079] [2022-11-02 20:41:35,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315163079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:35,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:35,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:41:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091454636] [2022-11-02 20:41:35,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:35,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:41:35,882 INFO L87 Difference]: Start difference. First operand 2742 states and 3967 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:36,266 INFO L93 Difference]: Finished difference Result 3108 states and 4499 transitions. [2022-11-02 20:41:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:41:36,267 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:41:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:36,276 INFO L225 Difference]: With dead ends: 3108 [2022-11-02 20:41:36,276 INFO L226 Difference]: Without dead ends: 3106 [2022-11-02 20:41:36,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:41:36,278 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 149 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:36,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 729 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-02 20:41:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-11-02 20:41:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3100. [2022-11-02 20:41:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3099 states have (on average 1.4485317844465957) internal successors, (4489), 3099 states have internal predecessors, (4489), 0 states have call successors, (0), 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 20:41:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4489 transitions. [2022-11-02 20:41:36,494 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4489 transitions. Word has length 62 [2022-11-02 20:41:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:36,495 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4489 transitions. [2022-11-02 20:41:36,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4489 transitions. [2022-11-02 20:41:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:41:36,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:36,498 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, 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 20:41:36,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:36,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:36,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash -544988577, now seen corresponding path program 1 times [2022-11-02 20:41:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:36,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618536294] [2022-11-02 20:41:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:36,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:36,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:36,720 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:36,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:41:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:37,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 20:41:37,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:38,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:54,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618536294] [2022-11-02 20:41:54,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618536294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:54,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:54,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:41:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23988080] [2022-11-02 20:41:54,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:41:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:41:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:41:54,081 INFO L87 Difference]: Start difference. First operand 3100 states and 4489 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:54,620 INFO L93 Difference]: Finished difference Result 4824 states and 6975 transitions. [2022-11-02 20:41:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:41:54,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:41:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:54,629 INFO L225 Difference]: With dead ends: 4824 [2022-11-02 20:41:54,629 INFO L226 Difference]: Without dead ends: 4822 [2022-11-02 20:41:54,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:41:54,631 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 282 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:54,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 872 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-02 20:41:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2022-11-02 20:41:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4816. [2022-11-02 20:41:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4815 states have (on average 1.4465212876427829) internal successors, (6965), 4815 states have internal predecessors, (6965), 0 states have call successors, (0), 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 20:41:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6965 transitions. [2022-11-02 20:41:54,967 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6965 transitions. Word has length 62 [2022-11-02 20:41:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:54,967 INFO L495 AbstractCegarLoop]: Abstraction has 4816 states and 6965 transitions. [2022-11-02 20:41:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6965 transitions. [2022-11-02 20:41:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:41:54,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:54,971 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, 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 20:41:54,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:55,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:41:55,185 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash 156611297, now seen corresponding path program 1 times [2022-11-02 20:41:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:41:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033004190] [2022-11-02 20:41:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:55,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:41:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:41:55,189 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:41:55,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:41:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:55,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:41:55,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:57,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:03,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:03,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033004190] [2022-11-02 20:42:03,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033004190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:03,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:03,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:42:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20003444] [2022-11-02 20:42:03,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:42:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:42:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:42:03,281 INFO L87 Difference]: Start difference. First operand 4816 states and 6965 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:04,051 INFO L93 Difference]: Finished difference Result 8368 states and 12095 transitions. [2022-11-02 20:42:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:42:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:42:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:04,069 INFO L225 Difference]: With dead ends: 8368 [2022-11-02 20:42:04,070 INFO L226 Difference]: Without dead ends: 8366 [2022-11-02 20:42:04,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:42:04,072 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 403 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:04,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 630 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-02 20:42:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8366 states. [2022-11-02 20:42:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8366 to 8360. [2022-11-02 20:42:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8360 states, 8359 states have (on average 1.4457470989352794) internal successors, (12085), 8359 states have internal predecessors, (12085), 0 states have call successors, (0), 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 20:42:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8360 states to 8360 states and 12085 transitions. [2022-11-02 20:42:04,784 INFO L78 Accepts]: Start accepts. Automaton has 8360 states and 12085 transitions. Word has length 62 [2022-11-02 20:42:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:04,785 INFO L495 AbstractCegarLoop]: Abstraction has 8360 states and 12085 transitions. [2022-11-02 20:42:04,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8360 states and 12085 transitions. [2022-11-02 20:42:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:42:04,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:04,791 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, 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 20:42:04,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:05,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1887601249, now seen corresponding path program 1 times [2022-11-02 20:42:05,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:05,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419408410] [2022-11-02 20:42:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:05,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:05,013 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:05,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:42:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:05,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 20:42:05,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:07,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:12,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:12,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419408410] [2022-11-02 20:42:12,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419408410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:12,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:12,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:42:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185386520] [2022-11-02 20:42:12,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:12,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:42:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:42:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:42:12,130 INFO L87 Difference]: Start difference. First operand 8360 states and 12085 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:12,917 INFO L93 Difference]: Finished difference Result 9724 states and 14075 transitions. [2022-11-02 20:42:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:42:12,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:42:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:12,933 INFO L225 Difference]: With dead ends: 9724 [2022-11-02 20:42:12,934 INFO L226 Difference]: Without dead ends: 9722 [2022-11-02 20:42:12,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:42:12,937 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 199 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:12,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 947 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-11-02 20:42:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2022-11-02 20:42:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9206. [2022-11-02 20:42:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9206 states, 9205 states have (on average 1.446713742531233) internal successors, (13317), 9205 states have internal predecessors, (13317), 0 states have call successors, (0), 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 20:42:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9206 states to 9206 states and 13317 transitions. [2022-11-02 20:42:13,566 INFO L78 Accepts]: Start accepts. Automaton has 9206 states and 13317 transitions. Word has length 62 [2022-11-02 20:42:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:13,567 INFO L495 AbstractCegarLoop]: Abstraction has 9206 states and 13317 transitions. [2022-11-02 20:42:13,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9206 states and 13317 transitions. [2022-11-02 20:42:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:42:13,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:13,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:13,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 20:42:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:13,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1186001375, now seen corresponding path program 1 times [2022-11-02 20:42:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437188931] [2022-11-02 20:42:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:13,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:13,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:42:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:14,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:42:14,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:15,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:24,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437188931] [2022-11-02 20:42:24,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437188931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:24,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:24,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:42:24,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694302289] [2022-11-02 20:42:24,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:24,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:42:24,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:24,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:42:24,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 20:42:24,025 INFO L87 Difference]: Start difference. First operand 9206 states and 13317 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:24,885 INFO L93 Difference]: Finished difference Result 10962 states and 15875 transitions. [2022-11-02 20:42:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:42:24,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:42:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:24,903 INFO L225 Difference]: With dead ends: 10962 [2022-11-02 20:42:24,903 INFO L226 Difference]: Without dead ends: 10960 [2022-11-02 20:42:24,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 20:42:24,908 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 145 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:24,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 691 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-02 20:42:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2022-11-02 20:42:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10954. [2022-11-02 20:42:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10954 states, 10953 states have (on average 1.4484616086916826) internal successors, (15865), 10953 states have internal predecessors, (15865), 0 states have call successors, (0), 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 20:42:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10954 states to 10954 states and 15865 transitions. [2022-11-02 20:42:25,608 INFO L78 Accepts]: Start accepts. Automaton has 10954 states and 15865 transitions. Word has length 62 [2022-11-02 20:42:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:25,608 INFO L495 AbstractCegarLoop]: Abstraction has 10954 states and 15865 transitions. [2022-11-02 20:42:25,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10954 states and 15865 transitions. [2022-11-02 20:42:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:42:25,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:25,617 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, 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 20:42:25,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:25,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:25,836 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -164686879, now seen corresponding path program 1 times [2022-11-02 20:42:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:25,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709709610] [2022-11-02 20:42:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:25,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:25,838 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:42:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:26,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 20:42:26,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:28,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:34,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:34,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709709610] [2022-11-02 20:42:34,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709709610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:34,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:34,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:42:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459340773] [2022-11-02 20:42:34,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:42:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:42:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 20:42:34,150 INFO L87 Difference]: Start difference. First operand 10954 states and 15865 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:35,045 INFO L93 Difference]: Finished difference Result 11488 states and 16639 transitions. [2022-11-02 20:42:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:42:35,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:42:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:35,056 INFO L225 Difference]: With dead ends: 11488 [2022-11-02 20:42:35,056 INFO L226 Difference]: Without dead ends: 11486 [2022-11-02 20:42:35,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:42:35,059 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 162 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:35,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 714 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-02 20:42:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11486 states. [2022-11-02 20:42:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11486 to 11478. [2022-11-02 20:42:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11478 states, 11477 states have (on average 1.448723534024571) internal successors, (16627), 11477 states have internal predecessors, (16627), 0 states have call successors, (0), 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 20:42:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11478 states to 11478 states and 16627 transitions. [2022-11-02 20:42:35,840 INFO L78 Accepts]: Start accepts. Automaton has 11478 states and 16627 transitions. Word has length 62 [2022-11-02 20:42:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:35,841 INFO L495 AbstractCegarLoop]: Abstraction has 11478 states and 16627 transitions. [2022-11-02 20:42:35,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11478 states and 16627 transitions. [2022-11-02 20:42:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:42:35,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:35,849 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, 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 20:42:35,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-02 20:42:36,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:36,062 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash 536912995, now seen corresponding path program 1 times [2022-11-02 20:42:36,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:36,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312229466] [2022-11-02 20:42:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:36,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:36,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:36,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59531d2c-90ca-49bd-b15a-c8e73b186f91/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:42:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:36,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:42:36,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:38,255 INFO L328 TraceCheckSpWp]: Computing backward predicates...