./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a --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 32bit --witnessprinter.graph.data.programhash 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- 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-b5237d8 [2022-11-21 09:10:00,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:10:00,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:10:00,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:10:00,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:10:00,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:10:00,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:10:00,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:10:00,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:10:00,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:10:00,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:10:00,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:10:00,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:10:00,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:10:00,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:10:00,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:10:00,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:10:00,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:10:00,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:10:00,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:10:00,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:10:00,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:10:00,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:10:00,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:10:00,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:10:00,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:10:00,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:10:00,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:10:00,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:10:00,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:10:00,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:10:00,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:10:00,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:10:00,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:10:00,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:10:00,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:10:00,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:10:00,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:10:00,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:10:00,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:10:00,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:10:00,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:10:00,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:10:00,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:10:00,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:10:00,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:10:00,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:10:00,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:10:00,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:10:00,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:10:00,341 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:10:00,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:10:00,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:10:00,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:10:00,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:10:00,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:10:00,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:10:00,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:10:00,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:10:00,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:10:00,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:10:00,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:10:00,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:10:00,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:10:00,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:10:00,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:10:00,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:10:00,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:10:00,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:10:00,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:10:00,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:10:00,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:10:00,348 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:10:00,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:10:00,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:10:00,349 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_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2022-11-21 09:10:00,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:10:00,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:10:00,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:10:00,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:10:00,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:10:00,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-21 09:10:03,744 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:10:04,121 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:10:04,125 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-21 09:10:04,142 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/data/356262b23/55797507468947d0bd67862f32cacb8e/FLAG1f5ea68dc [2022-11-21 09:10:04,370 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/data/356262b23/55797507468947d0bd67862f32cacb8e [2022-11-21 09:10:04,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:10:04,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:10:04,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:10:04,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:10:04,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:10:04,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:04,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542fe442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04, skipping insertion in model container [2022-11-21 09:10:04,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:04,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:10:04,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:10:04,809 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-21 09:10:04,815 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-21 09:10:04,818 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-21 09:10:04,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:10:04,843 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:10:04,899 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-21 09:10:04,901 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-21 09:10:04,902 WARN L237 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_7884aeb7-2485-4740-a131-ad8433a498bc/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-21 09:10:04,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:10:04,952 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:10:04,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04 WrapperNode [2022-11-21 09:10:04,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:10:04,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:10:04,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:10:04,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:10:04,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:04,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,047 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2022-11-21 09:10:05,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:10:05,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:10:05,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:10:05,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:10:05,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,106 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:10:05,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:10:05,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:10:05,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:10:05,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (1/1) ... [2022-11-21 09:10:05,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:10:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:05,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:10:05,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:10:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-21 09:10:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-21 09:10:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-11-21 09:10:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-11-21 09:10:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:10:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:10:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 09:10:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-11-21 09:10:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-11-21 09:10:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 09:10:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:10:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 09:10:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-21 09:10:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-21 09:10:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:10:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-11-21 09:10:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-11-21 09:10:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:10:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:10:05,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:10:05,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:10:05,801 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:10:05,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:10:05,811 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 09:10:05,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:10:05 BoogieIcfgContainer [2022-11-21 09:10:05,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:10:05,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:10:05,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:10:05,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:10:05,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:10:04" (1/3) ... [2022-11-21 09:10:05,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe282cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:10:05, skipping insertion in model container [2022-11-21 09:10:05,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:10:04" (2/3) ... [2022-11-21 09:10:05,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe282cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:10:05, skipping insertion in model container [2022-11-21 09:10:05,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:10:05" (3/3) ... [2022-11-21 09:10:05,829 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2022-11-21 09:10:05,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:10:05,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-21 09:10:05,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:10:05,926 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;@5f88a5ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:10:05,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 09:10:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 62 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-21 09:10:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 09:10:05,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:05,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:05,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -840575259, now seen corresponding path program 1 times [2022-11-21 09:10:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:05,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988053167] [2022-11-21 09:10:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:06,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:06,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988053167] [2022-11-21 09:10:06,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988053167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:06,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:06,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:10:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019330737] [2022-11-21 09:10:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:06,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:10:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:10:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:10:06,360 INFO L87 Difference]: Start difference. First operand has 77 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 62 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:10:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:06,404 INFO L93 Difference]: Finished difference Result 151 states and 198 transitions. [2022-11-21 09:10:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:10:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-21 09:10:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:06,415 INFO L225 Difference]: With dead ends: 151 [2022-11-21 09:10:06,415 INFO L226 Difference]: Without dead ends: 72 [2022-11-21 09:10:06,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:10:06,422 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:06,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:10:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-21 09:10:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-21 09:10:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 57 states have internal predecessors, (64), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-21 09:10:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-11-21 09:10:06,467 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 13 [2022-11-21 09:10:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:06,468 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-11-21 09:10:06,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:10:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-11-21 09:10:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 09:10:06,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:06,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:06,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:10:06,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash 992690414, now seen corresponding path program 1 times [2022-11-21 09:10:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:06,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842516201] [2022-11-21 09:10:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:07,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:07,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842516201] [2022-11-21 09:10:07,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842516201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:07,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:07,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:10:07,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34496326] [2022-11-21 09:10:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:07,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:10:07,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:10:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:10:07,063 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:10:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:07,345 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2022-11-21 09:10:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:10:07,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-21 09:10:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:07,357 INFO L225 Difference]: With dead ends: 129 [2022-11-21 09:10:07,357 INFO L226 Difference]: Without dead ends: 123 [2022-11-21 09:10:07,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:10:07,361 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 60 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:07,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 369 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:10:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-21 09:10:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2022-11-21 09:10:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 81 states have internal predecessors, (95), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-21 09:10:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-11-21 09:10:07,403 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 13 [2022-11-21 09:10:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:07,403 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-11-21 09:10:07,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:10:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-11-21 09:10:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:10:07,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:07,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:07,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:10:07,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 194685096, now seen corresponding path program 1 times [2022-11-21 09:10:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:07,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474577421] [2022-11-21 09:10:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:07,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474577421] [2022-11-21 09:10:07,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474577421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:07,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:07,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:10:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533121457] [2022-11-21 09:10:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:07,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:10:07,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:10:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:10:07,484 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 09:10:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:07,515 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-11-21 09:10:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:10:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-21 09:10:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:07,518 INFO L225 Difference]: With dead ends: 109 [2022-11-21 09:10:07,519 INFO L226 Difference]: Without dead ends: 107 [2022-11-21 09:10:07,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:10:07,521 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:07,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:10:07,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-21 09:10:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-21 09:10:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.216867469879518) internal successors, (101), 87 states have internal predecessors, (101), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-21 09:10:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2022-11-21 09:10:07,554 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 15 [2022-11-21 09:10:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:07,555 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-11-21 09:10:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 09:10:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2022-11-21 09:10:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:10:07,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:07,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:07,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:10:07,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1769288401, now seen corresponding path program 1 times [2022-11-21 09:10:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698895050] [2022-11-21 09:10:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:07,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698895050] [2022-11-21 09:10:07,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698895050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:07,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:07,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:10:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525536730] [2022-11-21 09:10:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:10:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:10:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:10:07,754 INFO L87 Difference]: Start difference. First operand 107 states and 133 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 09:10:07,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:07,927 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-11-21 09:10:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:10:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-21 09:10:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:07,929 INFO L225 Difference]: With dead ends: 186 [2022-11-21 09:10:07,929 INFO L226 Difference]: Without dead ends: 88 [2022-11-21 09:10:07,930 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 [2022-11-21 09:10:07,931 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 20 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:07,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 207 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:10:07,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-21 09:10:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2022-11-21 09:10:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-21 09:10:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-11-21 09:10:07,942 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 15 [2022-11-21 09:10:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:07,943 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-11-21 09:10:07,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 09:10:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-11-21 09:10:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 09:10:07,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:07,944 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] [2022-11-21 09:10:07,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:10:07,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1822538755, now seen corresponding path program 1 times [2022-11-21 09:10:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:07,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316469693] [2022-11-21 09:10:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:10:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 09:10:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316469693] [2022-11-21 09:10:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316469693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:10:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503661359] [2022-11-21 09:10:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:08,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:08,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:10:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:09,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 09:10:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:09,276 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 09:10:09,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 09:10:09,621 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-21 09:10:09,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-11-21 09:10:09,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 09:10:09,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 09:10:09,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 09:10:10,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:10:10,389 INFO L321 Elim1Store]: treesize reduction 72, result has 25.8 percent of original size [2022-11-21 09:10:10,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 238 treesize of output 280 [2022-11-21 09:10:10,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 09:10:10,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 09:10:10,736 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-11-21 09:10:10,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 16 [2022-11-21 09:10:10,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 11 [2022-11-21 09:10:10,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 09:10:11,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 09:10:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:11,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:10:11,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:10:11,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 746 treesize of output 735 [2022-11-21 09:10:11,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 902 treesize of output 870 [2022-11-21 09:10:11,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 958 treesize of output 942 [2022-11-21 09:10:11,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 942 treesize of output 934 [2022-11-21 09:10:11,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 934 treesize of output 930 [2022-11-21 09:10:11,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:10:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 09:10:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:10:12,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-21 09:10:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:10:12,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:10:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:12,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503661359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:10:12,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:10:12,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-11-21 09:10:12,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007714227] [2022-11-21 09:10:12,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:10:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 09:10:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 09:10:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=952, Unknown=2, NotChecked=0, Total=1056 [2022-11-21 09:10:12,215 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-21 09:10:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:14,260 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2022-11-21 09:10:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 09:10:14,261 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 31 [2022-11-21 09:10:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:14,263 INFO L225 Difference]: With dead ends: 194 [2022-11-21 09:10:14,263 INFO L226 Difference]: Without dead ends: 159 [2022-11-21 09:10:14,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=371, Invalid=2279, Unknown=2, NotChecked=0, Total=2652 [2022-11-21 09:10:14,265 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 610 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:14,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 705 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 09:10:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-21 09:10:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2022-11-21 09:10:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 100 states have (on average 1.2) internal successors, (120), 106 states have internal predecessors, (120), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2022-11-21 09:10:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-11-21 09:10:14,299 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 31 [2022-11-21 09:10:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:14,300 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-11-21 09:10:14,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 2.0) internal successors, (56), 25 states have internal predecessors, (56), 8 states have call successors, (9), 6 states have call predecessors, (9), 9 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-21 09:10:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-11-21 09:10:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 09:10:14,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:14,305 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] [2022-11-21 09:10:14,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:14,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7884aeb7-2485-4740-a131-ad8433a498bc/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:14,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:14,513 INFO L85 PathProgramCache]: Analyzing trace with hash 389627046, now seen corresponding path program 1 times [2022-11-21 09:10:14,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:14,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911830207] [2022-11-21 09:10:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:14,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 09:10:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 09:10:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat