./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro --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 5f93b8ae76a9f49fd548f86864dba92467dc46226e70c48807ccc1916a23b1f0 --- 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-8393723 [2022-11-18 20:04:12,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:04:12,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:04:12,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:04:12,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:04:12,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:04:12,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:04:12,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:04:12,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:04:12,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:04:12,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:04:12,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:04:12,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:04:12,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:04:12,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:04:12,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:04:12,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:04:12,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:04:12,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:04:12,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:04:12,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:04:12,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:04:12,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:04:12,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:04:12,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:04:12,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:04:12,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:04:12,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:04:12,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:04:12,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:04:12,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:04:12,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:04:12,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:04:12,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:04:12,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:04:12,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:04:12,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:04:12,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:04:12,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:04:12,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:04:12,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:04:12,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:04:12,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:04:12,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:04:12,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:04:12,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:04:12,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:04:12,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:04:12,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:04:12,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:04:12,347 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:04:12,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:04:12,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:04:12,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:04:12,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:04:12,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:04:12,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:04:12,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:04:12,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:04:12,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:04:12,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:04:12,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:04:12,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:04:12,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:12,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:04:12,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:04:12,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:04:12,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:04:12,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:04:12,353 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:04:12,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:04:12,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:04:12,354 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_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f93b8ae76a9f49fd548f86864dba92467dc46226e70c48807ccc1916a23b1f0 [2022-11-18 20:04:12,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:04:12,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:04:12,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:04:12,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:04:12,711 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:04:12,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c [2022-11-18 20:04:12,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/data/b467f3299/f6e5a1409e1d43ab9cc1b9e0c1409278/FLAGd508d6c48 [2022-11-18 20:04:13,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:04:13,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c [2022-11-18 20:04:13,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/data/b467f3299/f6e5a1409e1d43ab9cc1b9e0c1409278/FLAGd508d6c48 [2022-11-18 20:04:14,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/data/b467f3299/f6e5a1409e1d43ab9cc1b9e0c1409278 [2022-11-18 20:04:14,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:04:14,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:04:14,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:14,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:04:14,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:04:14,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:14" (1/1) ... [2022-11-18 20:04:14,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2ee4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:14, skipping insertion in model container [2022-11-18 20:04:14,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:14" (1/1) ... [2022-11-18 20:04:14,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:04:14,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:04:14,966 WARN L234 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_930ef25c-e448-43b5-9cfc-f333172cc9a8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c[1014,1027] [2022-11-18 20:04:16,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:16,501 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:04:16,513 WARN L234 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_930ef25c-e448-43b5-9cfc-f333172cc9a8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c[1014,1027] [2022-11-18 20:04:17,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:17,366 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:04:17,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17 WrapperNode [2022-11-18 20:04:17,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:17,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:17,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:04:17,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:04:17,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:17,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:18,941 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26018 [2022-11-18 20:04:18,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:18,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:04:18,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:04:18,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:04:18,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:18,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:19,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:20,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:04:20,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:04:20,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:04:20,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:04:20,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (1/1) ... [2022-11-18 20:04:20,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:20,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:20,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:20,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_930ef25c-e448-43b5-9cfc-f333172cc9a8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:04:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:04:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:04:22,361 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:04:22,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:05:04,293 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:05:04,336 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:05:04,336 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:05:04,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:04 BoogieIcfgContainer [2022-11-18 20:05:04,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:05:04,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:05:04,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:05:04,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:05:04,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:04:14" (1/3) ... [2022-11-18 20:05:04,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76473caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:04, skipping insertion in model container [2022-11-18 20:05:04,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:17" (2/3) ... [2022-11-18 20:05:04,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76473caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:04, skipping insertion in model container [2022-11-18 20:05:04,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:04" (3/3) ... [2022-11-18 20:05:04,356 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.3.prop1-back-serstep.c [2022-11-18 20:05:04,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:05:04,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:05:04,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:05:04,532 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;@7267e725, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:05:04,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:05:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 4487 states, 4485 states have (on average 1.666220735785953) internal successors, (7473), 4486 states have internal predecessors, (7473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-11-18 20:05:04,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:04,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:04,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:05:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1212883661, now seen corresponding path program 1 times [2022-11-18 20:05:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115716769] [2022-11-18 20:05:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115716769] [2022-11-18 20:05:07,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115716769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:07,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:07,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506971608] [2022-11-18 20:05:07,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:07,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:07,711 INFO L87 Difference]: Start difference. First operand has 4487 states, 4485 states have (on average 1.666220735785953) internal successors, (7473), 4486 states have internal predecessors, (7473), 0 states have call successors, (0), 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 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:09,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:05:12,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:05:14,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:05:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:14,357 INFO L93 Difference]: Finished difference Result 14323 states and 23867 transitions. [2022-11-18 20:05:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 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 589 [2022-11-18 20:05:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:14,425 INFO L225 Difference]: With dead ends: 14323 [2022-11-18 20:05:14,426 INFO L226 Difference]: Without dead ends: 9838 [2022-11-18 20:05:14,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:14,449 INFO L413 NwaCegarLoop]: 8925 mSDtfsCounter, 22377 mSDsluCounter, 10378 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22377 SdHoareTripleChecker+Valid, 19303 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:14,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22377 Valid, 19303 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 3 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 20:05:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9838 states. [2022-11-18 20:05:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9838 to 4485. [2022-11-18 20:05:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 1.665700267618198) internal successors, (7469), 4484 states have internal predecessors, (7469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 7469 transitions. [2022-11-18 20:05:14,683 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 7469 transitions. Word has length 589 [2022-11-18 20:05:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:14,686 INFO L495 AbstractCegarLoop]: Abstraction has 4485 states and 7469 transitions. [2022-11-18 20:05:14,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 7469 transitions. [2022-11-18 20:05:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-11-18 20:05:14,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:14,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:05:14,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:05:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1053583721, now seen corresponding path program 1 times [2022-11-18 20:05:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:14,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658509942] [2022-11-18 20:05:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:14,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:17,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:17,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658509942] [2022-11-18 20:05:17,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658509942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:17,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:17,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668754443] [2022-11-18 20:05:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:17,856 INFO L87 Difference]: Start difference. First operand 4485 states and 7469 transitions. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:20,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:05:23,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:05:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:23,248 INFO L93 Difference]: Finished difference Result 17921 states and 29854 transitions. [2022-11-18 20:05:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:23,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 590 [2022-11-18 20:05:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:23,309 INFO L225 Difference]: With dead ends: 17921 [2022-11-18 20:05:23,310 INFO L226 Difference]: Without dead ends: 13438 [2022-11-18 20:05:23,318 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 [2022-11-18 20:05:23,319 INFO L413 NwaCegarLoop]: 8919 mSDtfsCounter, 20338 mSDsluCounter, 14923 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20338 SdHoareTripleChecker+Valid, 23842 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:23,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20338 Valid, 23842 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-18 20:05:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2022-11-18 20:05:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 5360. [2022-11-18 20:05:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5359 states have (on average 1.665609255458108) internal successors, (8926), 5359 states have internal predecessors, (8926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8926 transitions. [2022-11-18 20:05:23,503 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8926 transitions. Word has length 590 [2022-11-18 20:05:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:23,506 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 8926 transitions. [2022-11-18 20:05:23,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8926 transitions. [2022-11-18 20:05:23,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3578 [2022-11-18 20:05:23,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:23,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:05:23,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:05:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash -904005263, now seen corresponding path program 1 times [2022-11-18 20:05:23,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:23,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334233124] [2022-11-18 20:05:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms