./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 38b53e6a 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 16:56:09,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:56:09,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:56:09,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:56:09,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:56:09,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:56:09,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:56:09,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:56:09,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:56:09,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:56:09,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:56:09,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:56:09,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:56:09,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:56:09,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:56:09,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:56:09,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:56:09,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:56:09,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:56:09,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:56:09,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:56:09,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:56:09,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:56:09,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:56:09,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:56:09,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:56:09,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:56:09,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:56:09,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:56:09,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:56:09,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:56:09,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:56:09,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:56:09,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:56:09,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:56:09,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:56:09,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:56:09,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:56:09,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:56:09,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:56:09,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:56:09,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:56:09,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:56:09,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:56:09,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:56:09,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:56:09,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:56:09,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:56:09,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:56:09,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:56:09,123 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:56:09,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:56:09,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:56:09,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:56:09,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:56:09,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:56:09,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:56:09,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:56:09,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:56:09,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:56:09,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:56:09,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:56:09,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:56:09,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:56:09,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:56:09,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:56:09,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:56:09,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:56:09,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:56:09,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:56:09,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:56:09,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:56:09,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:56:09,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:56:09,131 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:56:09,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:56:09,132 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2022-11-25 16:56:09,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:56:09,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:56:09,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:56:09,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:56:09,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:56:09,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-25 16:56:12,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:56:12,819 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:56:12,819 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-25 16:56:12,838 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/data/6aadbd53a/c30837c3c5ea4ed9868bf06c41c38792/FLAGfb2ae5c63 [2022-11-25 16:56:12,852 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/data/6aadbd53a/c30837c3c5ea4ed9868bf06c41c38792 [2022-11-25 16:56:12,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:56:12,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:56:12,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:12,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:56:12,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:56:12,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:12" (1/1) ... [2022-11-25 16:56:12,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f9e658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:12, skipping insertion in model container [2022-11-25 16:56:12,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:12" (1/1) ... [2022-11-25 16:56:12,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:56:12,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:56:13,300 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-25 16:56:13,306 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-25 16:56:13,310 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-25 16:56:13,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:13,351 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:56:13,406 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-25 16:56:13,407 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-25 16:56:13,408 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_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-25 16:56:13,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:13,448 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:56:13,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13 WrapperNode [2022-11-25 16:56:13,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:13,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:13,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:56:13,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:56:13,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,505 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2022-11-25 16:56:13,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:13,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:56:13,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:56:13,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:56:13,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:56:13,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:56:13,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:56:13,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:56:13,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (1/1) ... [2022-11-25 16:56:13,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:56:13,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:13,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:56:13,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:56:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-25 16:56:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-25 16:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-11-25 16:56:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-11-25 16:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:56:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-11-25 16:56:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-11-25 16:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:56:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 16:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-25 16:56:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-25 16:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-11-25 16:56:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-11-25 16:56:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:56:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:56:13,794 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:56:13,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:56:14,191 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:56:14,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:56:14,208 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 16:56:14,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:14 BoogieIcfgContainer [2022-11-25 16:56:14,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:56:14,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:56:14,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:56:14,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:56:14,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:56:12" (1/3) ... [2022-11-25 16:56:14,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bcf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:14, skipping insertion in model container [2022-11-25 16:56:14,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:13" (2/3) ... [2022-11-25 16:56:14,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bcf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:14, skipping insertion in model container [2022-11-25 16:56:14,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:14" (3/3) ... [2022-11-25 16:56:14,226 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2022-11-25 16:56:14,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:56:14,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-25 16:56:14,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:56:14,311 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;@21e83c3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:56:14,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 16:56:14,319 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) [2022-11-25 16:56:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 16:56:14,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:14,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:14,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash -840575259, now seen corresponding path program 1 times [2022-11-25 16:56:14,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:14,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901959657] [2022-11-25 16:56:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:14,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901959657] [2022-11-25 16:56:14,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901959657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:14,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:14,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:56:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126204531] [2022-11-25 16:56:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:56:14,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:56:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:56:14,645 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) [2022-11-25 16:56:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:56:14,682 INFO L93 Difference]: Finished difference Result 151 states and 198 transitions. [2022-11-25 16:56:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:56:14,684 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 [2022-11-25 16:56:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:56:14,692 INFO L225 Difference]: With dead ends: 151 [2022-11-25 16:56:14,693 INFO L226 Difference]: Without dead ends: 72 [2022-11-25 16:56:14,696 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 [2022-11-25 16:56:14,699 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 [2022-11-25 16:56:14,700 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] [2022-11-25 16:56:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-25 16:56:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-25 16:56:14,741 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) [2022-11-25 16:56:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-11-25 16:56:14,745 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 13 [2022-11-25 16:56:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:56:14,746 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-11-25 16:56:14,746 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) [2022-11-25 16:56:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-11-25 16:56:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 16:56:14,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:14,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:14,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:56:14,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash 992690414, now seen corresponding path program 1 times [2022-11-25 16:56:14,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:14,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019946516] [2022-11-25 16:56:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:14,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:15,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:15,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019946516] [2022-11-25 16:56:15,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019946516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:15,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:15,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454248288] [2022-11-25 16:56:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:56:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:56:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:56:15,412 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) [2022-11-25 16:56:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:56:15,737 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2022-11-25 16:56:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:56:15,738 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 [2022-11-25 16:56:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:56:15,746 INFO L225 Difference]: With dead ends: 129 [2022-11-25 16:56:15,747 INFO L226 Difference]: Without dead ends: 123 [2022-11-25 16:56:15,748 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 [2022-11-25 16:56:15,751 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 [2022-11-25 16:56:15,752 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] [2022-11-25 16:56:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-25 16:56:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2022-11-25 16:56:15,787 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) [2022-11-25 16:56:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2022-11-25 16:56:15,794 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 13 [2022-11-25 16:56:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:56:15,795 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2022-11-25 16:56:15,795 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) [2022-11-25 16:56:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2022-11-25 16:56:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 16:56:15,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:15,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:15,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:56:15,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash 194685096, now seen corresponding path program 1 times [2022-11-25 16:56:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:15,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718728452] [2022-11-25 16:56:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:56:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:15,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:15,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718728452] [2022-11-25 16:56:15,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718728452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:15,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:15,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670151344] [2022-11-25 16:56:15,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:15,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:15,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:15,967 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) [2022-11-25 16:56:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:56:16,013 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2022-11-25 16:56:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:56:16,014 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 [2022-11-25 16:56:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:56:16,020 INFO L225 Difference]: With dead ends: 109 [2022-11-25 16:56:16,020 INFO L226 Difference]: Without dead ends: 107 [2022-11-25 16:56:16,021 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 [2022-11-25 16:56:16,024 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 [2022-11-25 16:56:16,026 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] [2022-11-25 16:56:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-25 16:56:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-25 16:56:16,043 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) [2022-11-25 16:56:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions. [2022-11-25 16:56:16,044 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 15 [2022-11-25 16:56:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:56:16,045 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 133 transitions. [2022-11-25 16:56:16,045 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) [2022-11-25 16:56:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions. [2022-11-25 16:56:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 16:56:16,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:16,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:16,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:56:16,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1769288401, now seen corresponding path program 1 times [2022-11-25 16:56:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:16,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958734225] [2022-11-25 16:56:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:16,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:56:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:16,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958734225] [2022-11-25 16:56:16,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958734225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:16,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:16,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:16,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790512778] [2022-11-25 16:56:16,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:16,229 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) [2022-11-25 16:56:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:56:16,406 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-11-25 16:56:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:16,407 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 [2022-11-25 16:56:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:56:16,408 INFO L225 Difference]: With dead ends: 186 [2022-11-25 16:56:16,408 INFO L226 Difference]: Without dead ends: 88 [2022-11-25 16:56:16,409 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 [2022-11-25 16:56:16,410 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 [2022-11-25 16:56:16,411 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] [2022-11-25 16:56:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-25 16:56:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2022-11-25 16:56:16,421 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) [2022-11-25 16:56:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-11-25 16:56:16,423 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 15 [2022-11-25 16:56:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:56:16,423 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-11-25 16:56:16,423 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) [2022-11-25 16:56:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-11-25 16:56:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-25 16:56:16,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:16,425 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] [2022-11-25 16:56:16,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:56:16,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1822538755, now seen corresponding path program 1 times [2022-11-25 16:56:16,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:16,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48870361] [2022-11-25 16:56:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:16,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:56:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:56:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:56:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:17,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:17,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48870361] [2022-11-25 16:56:17,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48870361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:17,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945060150] [2022-11-25 16:56:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:17,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:17,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:17,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:56:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 16:56:17,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:18,043 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 16:56:18,044 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 [2022-11-25 16:56:18,414 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-25 16:56:18,415 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 [2022-11-25 16:56:18,442 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 [2022-11-25 16:56:18,467 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 [2022-11-25 16:56:18,492 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 [2022-11-25 16:56:18,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:56:19,045 INFO L321 Elim1Store]: treesize reduction 72, result has 25.8 percent of original size [2022-11-25 16:56:19,046 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 [2022-11-25 16:56:19,117 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 [2022-11-25 16:56:19,327 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 [2022-11-25 16:56:19,368 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-11-25 16:56:19,368 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 [2022-11-25 16:56:19,457 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 [2022-11-25 16:56:19,461 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 [2022-11-25 16:56:19,759 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 [2022-11-25 16:56:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:19,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:20,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 16:56:20,096 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 [2022-11-25 16:56:20,112 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 [2022-11-25 16:56:20,131 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 [2022-11-25 16:56:20,152 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 [2022-11-25 16:56:20,175 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 [2022-11-25 16:56:20,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:56:20,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 16:56:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:56:20,480 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 [2022-11-25 16:56:20,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:56:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 16:56:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:20,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945060150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:20,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:20,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-11-25 16:56:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635020413] [2022-11-25 16:56:20,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 16:56:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 16:56:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=952, Unknown=2, NotChecked=0, Total=1056 [2022-11-25 16:56:20,685 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) [2022-11-25 16:56:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:56:22,565 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2022-11-25 16:56:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 16:56:22,566 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 [2022-11-25 16:56:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:56:22,568 INFO L225 Difference]: With dead ends: 194 [2022-11-25 16:56:22,568 INFO L226 Difference]: Without dead ends: 159 [2022-11-25 16:56:22,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=371, Invalid=2279, Unknown=2, NotChecked=0, Total=2652 [2022-11-25 16:56:22,570 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 588 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:56:22,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 705 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:56:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-25 16:56:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131. [2022-11-25 16:56:22,606 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) [2022-11-25 16:56:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-11-25 16:56:22,610 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 31 [2022-11-25 16:56:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:56:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-11-25 16:56:22,611 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) [2022-11-25 16:56:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-11-25 16:56:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 16:56:22,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:56:22,617 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] [2022-11-25 16:56:22,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:22,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f6c3d35-32aa-483d-9db8-8a2b4c52331c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:22,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:56:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 389627046, now seen corresponding path program 1 times [2022-11-25 16:56:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:22,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527162] [2022-11-25 16:56:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:56:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 16:56:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 16:56:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat