./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/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 ff8f3f7dc837fc67a7020fd9a9dd65135ef198f3603f2c180bcb5ad9943191ea --- 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 15:51:53,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:51:53,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:51:54,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:51:54,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:51:54,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:51:54,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:51:54,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:51:54,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:51:54,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:51:54,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:51:54,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:51:54,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:51:54,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:51:54,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:51:54,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:51:54,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:51:54,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:51:54,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:51:54,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:51:54,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:51:54,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:51:54,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:51:54,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:51:54,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:51:54,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:51:54,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:51:54,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:51:54,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:51:54,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:51:54,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:51:54,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:51:54,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:51:54,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:51:54,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:51:54,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:51:54,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:51:54,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:51:54,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:51:54,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:51:54,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:51:54,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:51:54,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:51:54,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:51:54,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:51:54,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:51:54,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:51:54,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:51:54,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:51:54,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:51:54,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:51:54,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:51:54,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:51:54,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:51:54,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:51:54,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:51:54,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:51:54,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:51:54,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:51:54,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:51:54,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:51:54,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:51:54,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:51:54,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:51:54,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:51:54,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:51:54,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:54,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:51:54,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:51:54,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:51:54,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:51:54,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:51:54,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:51:54,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:51:54,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:51:54,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:51:54,177 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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff8f3f7dc837fc67a7020fd9a9dd65135ef198f3603f2c180bcb5ad9943191ea [2022-11-25 15:51:54,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:51:54,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:51:54,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:51:54,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:51:54,586 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:51:54,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 15:51:57,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:51:58,328 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:51:58,329 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 15:51:58,355 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/data/bfcdf4253/546daa034ccc490bae1ffb43a0758c3b/FLAG686545b0a [2022-11-25 15:51:58,376 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/data/bfcdf4253/546daa034ccc490bae1ffb43a0758c3b [2022-11-25 15:51:58,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:51:58,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:51:58,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:58,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:51:58,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:51:58,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:58" (1/1) ... [2022-11-25 15:51:58,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adc103a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:58, skipping insertion in model container [2022-11-25 15:51:58,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:58" (1/1) ... [2022-11-25 15:51:58,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:51:58,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:51:58,767 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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-11-25 15:51:58,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:58,867 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:51:58,928 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_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-11-25 15:51:58,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:59,004 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:51:59,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59 WrapperNode [2022-11-25 15:51:59,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:59,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:59,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:51:59,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:51:59,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,077 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 792 [2022-11-25 15:51:59,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:59,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:51:59,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:51:59,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:51:59,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:51:59,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:51:59,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:51:59,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:51:59,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (1/1) ... [2022-11-25 15:51:59,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:59,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:51:59,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a8b6ca-1343-4df4-a046-c7d3aa120d7c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:51:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:51:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:51:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:51:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:51:59,477 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:51:59,482 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:52:00,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:52:00,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:52:00,567 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:52:00,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:52:00 BoogieIcfgContainer [2022-11-25 15:52:00,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:52:00,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:52:00,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:52:00,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:52:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:51:58" (1/3) ... [2022-11-25 15:52:00,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bca34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:52:00, skipping insertion in model container [2022-11-25 15:52:00,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:59" (2/3) ... [2022-11-25 15:52:00,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bca34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:52:00, skipping insertion in model container [2022-11-25 15:52:00,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:52:00" (3/3) ... [2022-11-25 15:52:00,600 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 15:52:00,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:52:00,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:52:00,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:52:00,736 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;@6a4c9c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:52:00,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:52:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 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 15:52:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 15:52:00,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:00,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:00,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1949123702, now seen corresponding path program 1 times [2022-11-25 15:52:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:00,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863770405] [2022-11-25 15:52:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:01,678 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 15:52:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863770405] [2022-11-25 15:52:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863770405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:01,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:01,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500914318] [2022-11-25 15:52:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:01,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:01,751 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 15:52:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:02,213 INFO L93 Difference]: Finished difference Result 867 states and 1402 transitions. [2022-11-25 15:52:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:52:02,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 80 [2022-11-25 15:52:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:02,236 INFO L225 Difference]: With dead ends: 867 [2022-11-25 15:52:02,236 INFO L226 Difference]: Without dead ends: 747 [2022-11-25 15:52:02,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:52:02,245 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 2370 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:02,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 2217 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:52:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-25 15:52:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 328. [2022-11-25 15:52:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.507645259938838) internal successors, (493), 327 states have internal predecessors, (493), 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 15:52:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 493 transitions. [2022-11-25 15:52:02,378 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 493 transitions. Word has length 80 [2022-11-25 15:52:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:02,379 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 493 transitions. [2022-11-25 15:52:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 15:52:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 493 transitions. [2022-11-25 15:52:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 15:52:02,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:02,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:52:02,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash 13403552, now seen corresponding path program 1 times [2022-11-25 15:52:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:02,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850230079] [2022-11-25 15:52:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:02,812 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 15:52:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:02,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850230079] [2022-11-25 15:52:02,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850230079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:02,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:02,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:52:02,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614932118] [2022-11-25 15:52:02,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:02,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:52:02,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:52:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:02,820 INFO L87 Difference]: Start difference. First operand 328 states and 493 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:03,520 INFO L93 Difference]: Finished difference Result 1424 states and 2210 transitions. [2022-11-25 15:52:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:52:03,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-25 15:52:03,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:03,526 INFO L225 Difference]: With dead ends: 1424 [2022-11-25 15:52:03,527 INFO L226 Difference]: Without dead ends: 1176 [2022-11-25 15:52:03,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:03,530 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1158 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:03,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1466 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:52:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-11-25 15:52:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1168. [2022-11-25 15:52:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.5475578406169666) internal successors, (1806), 1167 states have internal predecessors, (1806), 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 15:52:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1806 transitions. [2022-11-25 15:52:03,776 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1806 transitions. Word has length 81 [2022-11-25 15:52:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:03,777 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1806 transitions. [2022-11-25 15:52:03,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1806 transitions. [2022-11-25 15:52:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:52:03,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:03,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:52:03,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2050473049, now seen corresponding path program 1 times [2022-11-25 15:52:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:03,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951864248] [2022-11-25 15:52:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:03,990 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 15:52:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951864248] [2022-11-25 15:52:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951864248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:03,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:52:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826136571] [2022-11-25 15:52:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:03,995 INFO L87 Difference]: Start difference. First operand 1168 states and 1806 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:04,833 INFO L93 Difference]: Finished difference Result 3105 states and 4859 transitions. [2022-11-25 15:52:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-25 15:52:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:04,844 INFO L225 Difference]: With dead ends: 3105 [2022-11-25 15:52:04,844 INFO L226 Difference]: Without dead ends: 2018 [2022-11-25 15:52:04,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:04,858 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1168 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:04,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 298 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:52:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-25 15:52:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2016. [2022-11-25 15:52:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2015 states have (on average 1.5563275434243176) internal successors, (3136), 2015 states have internal predecessors, (3136), 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 15:52:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3136 transitions. [2022-11-25 15:52:05,295 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3136 transitions. Word has length 82 [2022-11-25 15:52:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:05,296 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 3136 transitions. [2022-11-25 15:52:05,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3136 transitions. [2022-11-25 15:52:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:52:05,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:05,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:05,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:52:05,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash 269412074, now seen corresponding path program 1 times [2022-11-25 15:52:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:05,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594136968] [2022-11-25 15:52:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:05,456 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 15:52:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594136968] [2022-11-25 15:52:05,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594136968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:05,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:05,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:52:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313538909] [2022-11-25 15:52:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:05,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:05,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:05,460 INFO L87 Difference]: Start difference. First operand 2016 states and 3136 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:06,479 INFO L93 Difference]: Finished difference Result 5537 states and 8684 transitions. [2022-11-25 15:52:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:06,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-25 15:52:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:06,495 INFO L225 Difference]: With dead ends: 5537 [2022-11-25 15:52:06,495 INFO L226 Difference]: Without dead ends: 3632 [2022-11-25 15:52:06,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:06,500 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1134 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:06,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 298 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:52:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2022-11-25 15:52:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3630. [2022-11-25 15:52:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 1.5593827500688895) internal successors, (5659), 3629 states have internal predecessors, (5659), 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 15:52:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5659 transitions. [2022-11-25 15:52:07,201 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5659 transitions. Word has length 82 [2022-11-25 15:52:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:07,202 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5659 transitions. [2022-11-25 15:52:07,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5659 transitions. [2022-11-25 15:52:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:52:07,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:07,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:52:07,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash 778028859, now seen corresponding path program 1 times [2022-11-25 15:52:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017947934] [2022-11-25 15:52:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:07,412 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 15:52:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:07,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017947934] [2022-11-25 15:52:07,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017947934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:07,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:07,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:52:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170385546] [2022-11-25 15:52:07,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:07,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:07,419 INFO L87 Difference]: Start difference. First operand 3630 states and 5659 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:09,094 INFO L93 Difference]: Finished difference Result 10317 states and 16188 transitions. [2022-11-25 15:52:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-25 15:52:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:09,127 INFO L225 Difference]: With dead ends: 10317 [2022-11-25 15:52:09,127 INFO L226 Difference]: Without dead ends: 6832 [2022-11-25 15:52:09,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:09,138 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1116 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:09,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 309 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:52:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2022-11-25 15:52:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6830. [2022-11-25 15:52:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 1.5618685019768634) internal successors, (10666), 6829 states have internal predecessors, (10666), 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 15:52:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 10666 transitions. [2022-11-25 15:52:10,275 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 10666 transitions. Word has length 82 [2022-11-25 15:52:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:10,276 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 10666 transitions. [2022-11-25 15:52:10,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 10666 transitions. [2022-11-25 15:52:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:52:10,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:10,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:10,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:52:10,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1091254392, now seen corresponding path program 1 times [2022-11-25 15:52:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:10,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4738425] [2022-11-25 15:52:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:10,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:10,496 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 15:52:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4738425] [2022-11-25 15:52:10,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4738425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:10,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:10,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:52:10,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184041700] [2022-11-25 15:52:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:10,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:10,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:10,500 INFO L87 Difference]: Start difference. First operand 6830 states and 10666 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:12,798 INFO L93 Difference]: Finished difference Result 20144 states and 31540 transitions. [2022-11-25 15:52:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-25 15:52:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:12,867 INFO L225 Difference]: With dead ends: 20144 [2022-11-25 15:52:12,868 INFO L226 Difference]: Without dead ends: 13372 [2022-11-25 15:52:12,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:12,880 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1182 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:12,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 296 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:52:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2022-11-25 15:52:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 13370. [2022-11-25 15:52:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 1.5566609320068816) internal successors, (20811), 13369 states have internal predecessors, (20811), 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 15:52:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 20811 transitions. [2022-11-25 15:52:14,799 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 20811 transitions. Word has length 82 [2022-11-25 15:52:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:14,799 INFO L495 AbstractCegarLoop]: Abstraction has 13370 states and 20811 transitions. [2022-11-25 15:52:14,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 20811 transitions. [2022-11-25 15:52:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:52:14,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:14,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:52:14,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 980453495, now seen corresponding path program 1 times [2022-11-25 15:52:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454186840] [2022-11-25 15:52:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:14,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:14,970 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 15:52:14,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:14,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454186840] [2022-11-25 15:52:14,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454186840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:14,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:14,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:52:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406891097] [2022-11-25 15:52:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:14,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:14,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:14,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:14,975 INFO L87 Difference]: Start difference. First operand 13370 states and 20811 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:18,370 INFO L93 Difference]: Finished difference Result 39777 states and 61996 transitions. [2022-11-25 15:52:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:52:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-11-25 15:52:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:18,444 INFO L225 Difference]: With dead ends: 39777 [2022-11-25 15:52:18,445 INFO L226 Difference]: Without dead ends: 26449 [2022-11-25 15:52:18,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:52:18,464 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:18,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 292 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:52:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26449 states. [2022-11-25 15:52:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26449 to 26447. [2022-11-25 15:52:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26447 states, 26446 states have (on average 1.5480601981396052) internal successors, (40940), 26446 states have internal predecessors, (40940), 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 15:52:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26447 states to 26447 states and 40940 transitions. [2022-11-25 15:52:22,753 INFO L78 Accepts]: Start accepts. Automaton has 26447 states and 40940 transitions. Word has length 82 [2022-11-25 15:52:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:22,754 INFO L495 AbstractCegarLoop]: Abstraction has 26447 states and 40940 transitions. [2022-11-25 15:52:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 15:52:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 26447 states and 40940 transitions. [2022-11-25 15:52:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 15:52:22,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:22,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:22,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:52:22,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1660254060, now seen corresponding path program 1 times [2022-11-25 15:52:22,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924496729] [2022-11-25 15:52:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:23,103 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 15:52:23,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:23,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924496729] [2022-11-25 15:52:23,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924496729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:23,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:23,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:52:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203129604] [2022-11-25 15:52:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:23,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:52:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:52:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:52:23,108 INFO L87 Difference]: Start difference. First operand 26447 states and 40940 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:29,712 INFO L93 Difference]: Finished difference Result 52689 states and 81293 transitions. [2022-11-25 15:52:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:52:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-25 15:52:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:29,895 INFO L225 Difference]: With dead ends: 52689 [2022-11-25 15:52:29,896 INFO L226 Difference]: Without dead ends: 52687 [2022-11-25 15:52:29,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:52:29,915 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 304 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:29,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1237 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:52:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52687 states. [2022-11-25 15:52:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52687 to 27087. [2022-11-25 15:52:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27087 states, 27086 states have (on average 1.5351103891309164) internal successors, (41580), 27086 states have internal predecessors, (41580), 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 15:52:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27087 states to 27087 states and 41580 transitions. [2022-11-25 15:52:34,797 INFO L78 Accepts]: Start accepts. Automaton has 27087 states and 41580 transitions. Word has length 83 [2022-11-25 15:52:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:34,798 INFO L495 AbstractCegarLoop]: Abstraction has 27087 states and 41580 transitions. [2022-11-25 15:52:34,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 27087 states and 41580 transitions. [2022-11-25 15:52:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 15:52:34,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:34,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:34,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:52:34,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash 207675476, now seen corresponding path program 1 times [2022-11-25 15:52:34,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:34,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635509673] [2022-11-25 15:52:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:35,281 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 15:52:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:35,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635509673] [2022-11-25 15:52:35,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635509673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:35,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:35,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:52:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881542262] [2022-11-25 15:52:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:35,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:52:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:52:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:52:35,285 INFO L87 Difference]: Start difference. First operand 27087 states and 41580 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 15:52:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:51,035 INFO L93 Difference]: Finished difference Result 110286 states and 167959 transitions. [2022-11-25 15:52:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:52:51,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 84 [2022-11-25 15:52:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:51,282 INFO L225 Difference]: With dead ends: 110286 [2022-11-25 15:52:51,283 INFO L226 Difference]: Without dead ends: 95974 [2022-11-25 15:52:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-25 15:52:51,529 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 2976 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:51,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 1390 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 15:52:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95974 states. [2022-11-25 15:52:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95974 to 27380. [2022-11-25 15:52:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27380 states, 27379 states have (on average 1.53340151210782) internal successors, (41983), 27379 states have internal predecessors, (41983), 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 15:52:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27380 states to 27380 states and 41983 transitions. [2022-11-25 15:52:57,493 INFO L78 Accepts]: Start accepts. Automaton has 27380 states and 41983 transitions. Word has length 84 [2022-11-25 15:52:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:52:57,494 INFO L495 AbstractCegarLoop]: Abstraction has 27380 states and 41983 transitions. [2022-11-25 15:52:57,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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 15:52:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27380 states and 41983 transitions. [2022-11-25 15:52:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 15:52:57,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:52:57,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:57,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:52:57,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:52:57,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1543265332, now seen corresponding path program 1 times [2022-11-25 15:52:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:57,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992107816] [2022-11-25 15:52:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:58,110 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 15:52:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:58,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992107816] [2022-11-25 15:52:58,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992107816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:52:58,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:52:58,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:52:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169780772] [2022-11-25 15:52:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:52:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:52:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:52:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:52:58,113 INFO L87 Difference]: Start difference. First operand 27380 states and 41983 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 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)