./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/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_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/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_2f743578-34a0-49d1-a836-3059c14dcaf7/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 d49205c4ffe20d5beac0ad3125002385f97f5ba1191dc9c85bce9eb1aba82790 --- 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 18:29:45,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:29:45,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:29:45,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:29:45,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:29:45,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:29:45,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:29:45,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:29:45,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:29:45,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:29:45,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:29:45,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:29:45,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:29:45,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:29:45,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:29:45,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:29:45,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:29:45,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:29:45,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:29:45,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:29:45,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:29:45,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:29:45,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:29:45,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:29:45,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:29:45,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:29:45,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:29:45,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:29:45,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:29:45,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:29:45,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:29:45,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:29:45,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:29:45,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:29:45,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:29:45,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:29:45,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:29:45,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:29:45,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:29:45,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:29:45,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:29:45,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:29:46,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:29:46,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:29:46,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:29:46,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:29:46,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:29:46,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:29:46,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:29:46,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:29:46,038 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:29:46,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:29:46,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:29:46,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:29:46,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:29:46,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:29:46,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:29:46,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:29:46,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:29:46,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:29:46,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:29:46,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:29:46,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:29:46,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:29:46,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:29:46,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:29:46,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:46,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:29:46,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:29:46,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:29:46,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:29:46,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:29:46,044 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:29:46,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:29:46,044 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:29:46,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:29:46,045 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_2f743578-34a0-49d1-a836-3059c14dcaf7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d49205c4ffe20d5beac0ad3125002385f97f5ba1191dc9c85bce9eb1aba82790 [2022-11-25 18:29:46,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:29:46,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:29:46,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:29:46,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:29:46,447 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:29:46,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-25 18:29:49,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:29:49,798 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:29:49,799 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-25 18:29:49,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/data/862439a16/2e3cd4c3005b4f299b886ddfecf1f8f8/FLAGde9fc17e0 [2022-11-25 18:29:49,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/data/862439a16/2e3cd4c3005b4f299b886ddfecf1f8f8 [2022-11-25 18:29:49,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:29:49,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:29:49,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:49,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:29:49,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:29:49,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:49" (1/1) ... [2022-11-25 18:29:49,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3574f16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:49, skipping insertion in model container [2022-11-25 18:29:49,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:49" (1/1) ... [2022-11-25 18:29:49,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:29:49,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:29:50,201 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_2f743578-34a0-49d1-a836-3059c14dcaf7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7365,7378] [2022-11-25 18:29:50,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:50,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:29:50,355 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_2f743578-34a0-49d1-a836-3059c14dcaf7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7365,7378] [2022-11-25 18:29:50,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:50,404 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:29:50,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50 WrapperNode [2022-11-25 18:29:50,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:50,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:50,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:29:50,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:29:50,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,458 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2022-11-25 18:29:50,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:50,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:29:50,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:29:50,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:29:50,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:29:50,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:29:50,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:29:50,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:29:50,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (1/1) ... [2022-11-25 18:29:50,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:50,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:29:50,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f743578-34a0-49d1-a836-3059c14dcaf7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:29:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:29:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:29:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:29:50,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:29:50,780 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:29:50,783 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:29:51,458 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:29:51,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:29:51,467 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:29:51,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:51 BoogieIcfgContainer [2022-11-25 18:29:51,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:29:51,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:29:51,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:29:51,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:29:51,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:29:49" (1/3) ... [2022-11-25 18:29:51,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291692b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:51, skipping insertion in model container [2022-11-25 18:29:51,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:50" (2/3) ... [2022-11-25 18:29:51,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291692b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:51, skipping insertion in model container [2022-11-25 18:29:51,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:51" (3/3) ... [2022-11-25 18:29:51,487 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-25 18:29:51,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:29:51,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:29:51,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:29:51,621 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;@7b382f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:29:51,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:29:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 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 18:29:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 18:29:51,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:51,661 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] [2022-11-25 18:29:51,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash -652154134, now seen corresponding path program 1 times [2022-11-25 18:29:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:51,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984471565] [2022-11-25 18:29:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:52,242 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 18:29:52,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984471565] [2022-11-25 18:29:52,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984471565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:52,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:52,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694167320] [2022-11-25 18:29:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:52,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:52,291 INFO L87 Difference]: Start difference. First operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 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 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:29:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:52,405 INFO L93 Difference]: Finished difference Result 385 states and 627 transitions. [2022-11-25 18:29:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:52,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-11-25 18:29:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:52,426 INFO L225 Difference]: With dead ends: 385 [2022-11-25 18:29:52,427 INFO L226 Difference]: Without dead ends: 260 [2022-11-25 18:29:52,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:52,434 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 212 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:52,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 609 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-25 18:29:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-11-25 18:29:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5019455252918288) internal successors, (386), 257 states have internal predecessors, (386), 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 18:29:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2022-11-25 18:29:52,510 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 73 [2022-11-25 18:29:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:52,510 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2022-11-25 18:29:52,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:29:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2022-11-25 18:29:52,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 18:29:52,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:52,514 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] [2022-11-25 18:29:52,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:29:52,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:52,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash -399717739, now seen corresponding path program 1 times [2022-11-25 18:29:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:52,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730606472] [2022-11-25 18:29:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:52,751 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 18:29:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:52,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730606472] [2022-11-25 18:29:52,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730606472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:52,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:52,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064578076] [2022-11-25 18:29:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:52,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:52,756 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:29:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:52,849 INFO L93 Difference]: Finished difference Result 654 states and 1018 transitions. [2022-11-25 18:29:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-11-25 18:29:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:52,853 INFO L225 Difference]: With dead ends: 654 [2022-11-25 18:29:52,853 INFO L226 Difference]: Without dead ends: 440 [2022-11-25 18:29:52,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:52,856 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 168 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:52,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 539 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-25 18:29:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2022-11-25 18:29:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.540045766590389) internal successors, (673), 437 states have internal predecessors, (673), 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 18:29:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 673 transitions. [2022-11-25 18:29:52,915 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 673 transitions. Word has length 74 [2022-11-25 18:29:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:52,916 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 673 transitions. [2022-11-25 18:29:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:29:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 673 transitions. [2022-11-25 18:29:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 18:29:52,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:52,919 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] [2022-11-25 18:29:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:29:52,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1868398039, now seen corresponding path program 1 times [2022-11-25 18:29:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387934413] [2022-11-25 18:29:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:53,184 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 18:29:53,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:53,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387934413] [2022-11-25 18:29:53,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387934413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:53,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:53,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272235938] [2022-11-25 18:29:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:53,189 INFO L87 Difference]: Start difference. First operand 438 states and 673 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:29:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:53,304 INFO L93 Difference]: Finished difference Result 1162 states and 1827 transitions. [2022-11-25 18:29:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-11-25 18:29:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:53,312 INFO L225 Difference]: With dead ends: 1162 [2022-11-25 18:29:53,312 INFO L226 Difference]: Without dead ends: 768 [2022-11-25 18:29:53,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:53,326 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 163 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:53,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-25 18:29:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2022-11-25 18:29:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.5594771241830065) internal successors, (1193), 765 states have internal predecessors, (1193), 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 18:29:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1193 transitions. [2022-11-25 18:29:53,431 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1193 transitions. Word has length 75 [2022-11-25 18:29:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:53,432 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1193 transitions. [2022-11-25 18:29:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:29:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1193 transitions. [2022-11-25 18:29:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 18:29:53,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:53,442 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] [2022-11-25 18:29:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:29:53,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1093755554, now seen corresponding path program 1 times [2022-11-25 18:29:53,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:53,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921474532] [2022-11-25 18:29:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:53,586 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 18:29:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921474532] [2022-11-25 18:29:53,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921474532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:53,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:53,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363636997] [2022-11-25 18:29:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:53,591 INFO L87 Difference]: Start difference. First operand 766 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:29:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:53,768 INFO L93 Difference]: Finished difference Result 2082 states and 3283 transitions. [2022-11-25 18:29:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-11-25 18:29:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:53,778 INFO L225 Difference]: With dead ends: 2082 [2022-11-25 18:29:53,780 INFO L226 Difference]: Without dead ends: 1360 [2022-11-25 18:29:53,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:53,792 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 158 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:53,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-11-25 18:29:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2022-11-25 18:29:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.565954310980103) internal successors, (2125), 1357 states have internal predecessors, (2125), 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 18:29:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2125 transitions. [2022-11-25 18:29:53,944 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2125 transitions. Word has length 76 [2022-11-25 18:29:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:53,945 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2125 transitions. [2022-11-25 18:29:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:29:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2125 transitions. [2022-11-25 18:29:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 18:29:53,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:53,949 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] [2022-11-25 18:29:53,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:29:53,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2108543356, now seen corresponding path program 1 times [2022-11-25 18:29:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811852970] [2022-11-25 18:29:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:54,107 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 18:29:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:54,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811852970] [2022-11-25 18:29:54,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811852970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:54,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864444977] [2022-11-25 18:29:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:54,109 INFO L87 Difference]: Start difference. First operand 1358 states and 2125 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 18:29:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:54,423 INFO L93 Difference]: Finished difference Result 3730 states and 5871 transitions. [2022-11-25 18:29:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-11-25 18:29:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:54,437 INFO L225 Difference]: With dead ends: 3730 [2022-11-25 18:29:54,437 INFO L226 Difference]: Without dead ends: 2416 [2022-11-25 18:29:54,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:54,441 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 153 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:54,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-11-25 18:29:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-11-25 18:29:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 1.563613758806465) internal successors, (3773), 2413 states have internal predecessors, (3773), 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 18:29:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3773 transitions. [2022-11-25 18:29:54,768 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3773 transitions. Word has length 77 [2022-11-25 18:29:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:54,771 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3773 transitions. [2022-11-25 18:29:54,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 18:29:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3773 transitions. [2022-11-25 18:29:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 18:29:54,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:54,780 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] [2022-11-25 18:29:54,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:29:54,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:54,783 INFO L85 PathProgramCache]: Analyzing trace with hash -741254085, now seen corresponding path program 1 times [2022-11-25 18:29:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:54,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574640408] [2022-11-25 18:29:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:54,915 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 18:29:54,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:54,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574640408] [2022-11-25 18:29:54,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574640408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:54,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:54,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:29:54,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976097860] [2022-11-25 18:29:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:54,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:29:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:29:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:54,919 INFO L87 Difference]: Start difference. First operand 2414 states and 3773 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 18:29:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:55,486 INFO L93 Difference]: Finished difference Result 6642 states and 10399 transitions. [2022-11-25 18:29:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:55,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-11-25 18:29:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:55,504 INFO L225 Difference]: With dead ends: 6642 [2022-11-25 18:29:55,505 INFO L226 Difference]: Without dead ends: 4272 [2022-11-25 18:29:55,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:29:55,514 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 148 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:55,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-11-25 18:29:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4270. [2022-11-25 18:29:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 4269 states have (on average 1.554696650269384) internal successors, (6637), 4269 states have internal predecessors, (6637), 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 18:29:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6637 transitions. [2022-11-25 18:29:56,090 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6637 transitions. Word has length 78 [2022-11-25 18:29:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:56,090 INFO L495 AbstractCegarLoop]: Abstraction has 4270 states and 6637 transitions. [2022-11-25 18:29:56,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 18:29:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6637 transitions. [2022-11-25 18:29:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 18:29:56,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:56,095 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] [2022-11-25 18:29:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:29:56,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1744404253, now seen corresponding path program 1 times [2022-11-25 18:29:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:56,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133694829] [2022-11-25 18:29:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:56,419 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 18:29:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133694829] [2022-11-25 18:29:56,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133694829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:56,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:56,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:29:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316696944] [2022-11-25 18:29:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:29:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:29:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:29:56,424 INFO L87 Difference]: Start difference. First operand 4270 states and 6637 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 18:30:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:30:00,082 INFO L93 Difference]: Finished difference Result 33852 states and 52788 transitions. [2022-11-25 18:30:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:30:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2022-11-25 18:30:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:30:00,199 INFO L225 Difference]: With dead ends: 33852 [2022-11-25 18:30:00,199 INFO L226 Difference]: Without dead ends: 29626 [2022-11-25 18:30:00,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:30:00,214 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 2559 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:30:00,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 2474 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:30:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29626 states. [2022-11-25 18:30:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29626 to 8494. [2022-11-25 18:30:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 1.5425644648534087) internal successors, (13101), 8493 states have internal predecessors, (13101), 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 18:30:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 13101 transitions. [2022-11-25 18:30:01,907 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 13101 transitions. Word has length 79 [2022-11-25 18:30:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:30:01,908 INFO L495 AbstractCegarLoop]: Abstraction has 8494 states and 13101 transitions. [2022-11-25 18:30:01,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 18:30:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 13101 transitions. [2022-11-25 18:30:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 18:30:01,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:30:01,910 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 18:30:01,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:30:01,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:30:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1738586808, now seen corresponding path program 1 times [2022-11-25 18:30:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:01,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679898132] [2022-11-25 18:30:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:01,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:02,293 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 18:30:02,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679898132] [2022-11-25 18:30:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679898132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:02,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:02,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:30:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069886619] [2022-11-25 18:30:02,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:02,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:30:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:30:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:30:02,297 INFO L87 Difference]: Start difference. First operand 8494 states and 13101 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 18:30:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:30:10,114 INFO L93 Difference]: Finished difference Result 51514 states and 78771 transitions. [2022-11-25 18:30:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:30:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 18:30:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:30:10,267 INFO L225 Difference]: With dead ends: 51514 [2022-11-25 18:30:10,267 INFO L226 Difference]: Without dead ends: 43064 [2022-11-25 18:30:10,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:30:10,293 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 936 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:30:10,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1831 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:30:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43064 states. [2022-11-25 18:30:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43064 to 43054. [2022-11-25 18:30:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43054 states, 43053 states have (on average 1.5232620258750842) internal successors, (65581), 43053 states have internal predecessors, (65581), 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 18:30:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43054 states to 43054 states and 65581 transitions. [2022-11-25 18:30:18,081 INFO L78 Accepts]: Start accepts. Automaton has 43054 states and 65581 transitions. Word has length 80 [2022-11-25 18:30:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:30:18,081 INFO L495 AbstractCegarLoop]: Abstraction has 43054 states and 65581 transitions. [2022-11-25 18:30:18,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 18:30:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 43054 states and 65581 transitions. [2022-11-25 18:30:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 18:30:18,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:30:18,084 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 18:30:18,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:30:18,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:30:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:30:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1401026767, now seen corresponding path program 1 times [2022-11-25 18:30:18,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:30:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675251530] [2022-11-25 18:30:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:30:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:30:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:30:18,218 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 18:30:18,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:30:18,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675251530] [2022-11-25 18:30:18,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675251530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:30:18,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:30:18,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:30:18,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716726921] [2022-11-25 18:30:18,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:30:18,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:30:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:30:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:30:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:30:18,222 INFO L87 Difference]: Start difference. First operand 43054 states and 65581 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 18:30:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:30:31,945 INFO L93 Difference]: Finished difference Result 129074 states and 196655 transitions. [2022-11-25 18:30:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:30:31,946 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 18:30:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:30:32,192 INFO L225 Difference]: With dead ends: 129074 [2022-11-25 18:30:32,193 INFO L226 Difference]: Without dead ends: 86064 [2022-11-25 18:30:32,251 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 18:30:32,254 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 991 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:30:32,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 254 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:30:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86064 states.