./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:24:28,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:28,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:28,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:28,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:28,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:28,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:28,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:29,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:29,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:29,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:29,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:29,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:29,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:29,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:29,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:29,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:29,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:29,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:29,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:29,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:29,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:29,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:29,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:29,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:29,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:29,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:29,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:29,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:29,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:29,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:29,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:29,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:29,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:29,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:29,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:29,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:29,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:29,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:29,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:29,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:29,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:24:29,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:29,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:29,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:29,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:29,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:29,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:29,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:29,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:29,106 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:29,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:29,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:29,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:29,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:29,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:29,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:24:29,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:29,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:24:29,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:29,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:24:29,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:29,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:24:29,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:29,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:29,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:29,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:29,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:29,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:29,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:24:29,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:24:29,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:24:29,113 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:24:29,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:24:29,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:24:29,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de [2022-11-18 20:24:29,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:29,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:29,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:29,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:29,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:29,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:24:29,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/data/f5a6a97ed/90df0fb476144858a38b5c11de54500a/FLAGf3a384c5d [2022-11-18 20:24:30,123 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:24:30,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:24:30,167 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/data/f5a6a97ed/90df0fb476144858a38b5c11de54500a/FLAGf3a384c5d [2022-11-18 20:24:30,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/data/f5a6a97ed/90df0fb476144858a38b5c11de54500a [2022-11-18 20:24:30,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:24:30,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:24:30,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:30,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:24:30,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:24:30,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:30" (1/1) ... [2022-11-18 20:24:30,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c137f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:30, skipping insertion in model container [2022-11-18 20:24:30,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:30" (1/1) ... [2022-11-18 20:24:30,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:24:30,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:24:30,782 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-11-18 20:24:30,826 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-11-18 20:24:30,840 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-11-18 20:24:30,848 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-11-18 20:24:31,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:31,126 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:24:31,200 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2022-11-18 20:24:31,254 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2022-11-18 20:24:31,272 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2022-11-18 20:24:31,286 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2022-11-18 20:24:31,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:31,421 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:24:31,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31 WrapperNode [2022-11-18 20:24:31,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:31,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:31,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:24:31,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:24:31,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,587 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2415 [2022-11-18 20:24:31,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:31,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:24:31,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:24:31,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:24:31,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:24:31,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:24:31,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:24:31,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:24:31,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (1/1) ... [2022-11-18 20:24:31,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:31,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:31,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:24:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:24:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:24:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:24:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:24:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:24:32,081 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:24:32,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:24:33,691 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:24:33,711 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:24:33,712 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:24:33,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:33 BoogieIcfgContainer [2022-11-18 20:24:33,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:24:33,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:24:33,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:24:33,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:24:33,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:24:30" (1/3) ... [2022-11-18 20:24:33,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee35803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:33, skipping insertion in model container [2022-11-18 20:24:33,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:31" (2/3) ... [2022-11-18 20:24:33,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee35803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:33, skipping insertion in model container [2022-11-18 20:24:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:33" (3/3) ... [2022-11-18 20:24:33,725 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:24:33,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:24:33,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 20:24:33,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:33,835 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;@542443a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:33,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:24:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:24:33,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:33,856 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] [2022-11-18 20:24:33,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2022-11-18 20:24:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109378526] [2022-11-18 20:24:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:33,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:34,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109378526] [2022-11-18 20:24:34,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109378526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:34,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:34,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:24:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101718880] [2022-11-18 20:24:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:24:34,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:24:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:24:34,394 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:34,949 INFO L93 Difference]: Finished difference Result 833 states and 1472 transitions. [2022-11-18 20:24:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:34,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2022-11-18 20:24:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:34,965 INFO L225 Difference]: With dead ends: 833 [2022-11-18 20:24:34,966 INFO L226 Difference]: Without dead ends: 484 [2022-11-18 20:24:34,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:34,973 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 2299 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:34,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 576 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:24:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-18 20:24:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-11-18 20:24:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.3755274261603376) internal successors, (652), 477 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 652 transitions. [2022-11-18 20:24:35,058 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 652 transitions. Word has length 50 [2022-11-18 20:24:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:35,058 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 652 transitions. [2022-11-18 20:24:35,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 652 transitions. [2022-11-18 20:24:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:24:35,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:35,062 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] [2022-11-18 20:24:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:24:35,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2022-11-18 20:24:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:35,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329177058] [2022-11-18 20:24:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:35,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:35,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329177058] [2022-11-18 20:24:35,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329177058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:35,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:35,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552428046] [2022-11-18 20:24:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:35,221 INFO L87 Difference]: Start difference. First operand 478 states and 652 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:35,304 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2022-11-18 20:24:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-11-18 20:24:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:35,308 INFO L225 Difference]: With dead ends: 938 [2022-11-18 20:24:35,308 INFO L226 Difference]: Without dead ends: 684 [2022-11-18 20:24:35,309 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 [2022-11-18 20:24:35,310 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:35,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:24:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-18 20:24:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2022-11-18 20:24:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 674 states have (on average 1.4080118694362018) internal successors, (949), 677 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2022-11-18 20:24:35,406 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 51 [2022-11-18 20:24:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:35,409 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2022-11-18 20:24:35,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2022-11-18 20:24:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:24:35,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:35,419 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] [2022-11-18 20:24:35,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:24:35,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2022-11-18 20:24:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081605448] [2022-11-18 20:24:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:35,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:35,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081605448] [2022-11-18 20:24:35,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081605448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:35,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:35,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601550090] [2022-11-18 20:24:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:35,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:35,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:35,523 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:35,631 INFO L93 Difference]: Finished difference Result 1307 states and 1856 transitions. [2022-11-18 20:24:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:35,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-11-18 20:24:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:35,635 INFO L225 Difference]: With dead ends: 1307 [2022-11-18 20:24:35,636 INFO L226 Difference]: Without dead ends: 917 [2022-11-18 20:24:35,637 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 [2022-11-18 20:24:35,638 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 366 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:35,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 932 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:24:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-11-18 20:24:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2022-11-18 20:24:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 903 states have (on average 1.3820598006644518) internal successors, (1248), 906 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1248 transitions. [2022-11-18 20:24:35,720 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1248 transitions. Word has length 51 [2022-11-18 20:24:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1248 transitions. [2022-11-18 20:24:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1248 transitions. [2022-11-18 20:24:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:24:35,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:35,724 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] [2022-11-18 20:24:35,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:24:35,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2022-11-18 20:24:35,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:35,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341208930] [2022-11-18 20:24:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:35,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:35,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341208930] [2022-11-18 20:24:35,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341208930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:35,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:35,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506413676] [2022-11-18 20:24:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:35,849 INFO L87 Difference]: Start difference. First operand 907 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:36,035 INFO L93 Difference]: Finished difference Result 1892 states and 2673 transitions. [2022-11-18 20:24:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-11-18 20:24:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:36,043 INFO L225 Difference]: With dead ends: 1892 [2022-11-18 20:24:36,043 INFO L226 Difference]: Without dead ends: 1391 [2022-11-18 20:24:36,047 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 [2022-11-18 20:24:36,054 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 263 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:36,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 924 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:24:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-11-18 20:24:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1384. [2022-11-18 20:24:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1380 states have (on average 1.3898550724637682) internal successors, (1918), 1383 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1918 transitions. [2022-11-18 20:24:36,188 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1918 transitions. Word has length 51 [2022-11-18 20:24:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:36,189 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1918 transitions. [2022-11-18 20:24:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1918 transitions. [2022-11-18 20:24:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:24:36,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:36,192 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] [2022-11-18 20:24:36,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:24:36,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2022-11-18 20:24:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938835499] [2022-11-18 20:24:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:36,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:36,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938835499] [2022-11-18 20:24:36,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938835499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:36,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:36,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:24:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927583695] [2022-11-18 20:24:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:24:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:24:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:24:36,373 INFO L87 Difference]: Start difference. First operand 1384 states and 1918 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:36,877 INFO L93 Difference]: Finished difference Result 2979 states and 4184 transitions. [2022-11-18 20:24:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:36,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2022-11-18 20:24:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:36,885 INFO L225 Difference]: With dead ends: 2979 [2022-11-18 20:24:36,885 INFO L226 Difference]: Without dead ends: 1766 [2022-11-18 20:24:36,887 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 [2022-11-18 20:24:36,888 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1535 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:36,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 371 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:24:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-11-18 20:24:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1754. [2022-11-18 20:24:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1750 states have (on average 1.3982857142857144) internal successors, (2447), 1753 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2447 transitions. [2022-11-18 20:24:37,089 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2447 transitions. Word has length 51 [2022-11-18 20:24:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:37,089 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2447 transitions. [2022-11-18 20:24:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2447 transitions. [2022-11-18 20:24:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:24:37,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:37,092 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] [2022-11-18 20:24:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:24:37,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2022-11-18 20:24:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:37,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736703485] [2022-11-18 20:24:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:37,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736703485] [2022-11-18 20:24:37,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736703485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:37,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:37,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:24:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750139952] [2022-11-18 20:24:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:37,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:24:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:24:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:24:37,192 INFO L87 Difference]: Start difference. First operand 1754 states and 2447 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:37,764 INFO L93 Difference]: Finished difference Result 3899 states and 5482 transitions. [2022-11-18 20:24:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-18 20:24:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:37,773 INFO L225 Difference]: With dead ends: 3899 [2022-11-18 20:24:37,773 INFO L226 Difference]: Without dead ends: 2316 [2022-11-18 20:24:37,775 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 [2022-11-18 20:24:37,776 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1382 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:37,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 340 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:24:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-18 20:24:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2300. [2022-11-18 20:24:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2296 states have (on average 1.3937282229965158) internal successors, (3200), 2299 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3200 transitions. [2022-11-18 20:24:38,066 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3200 transitions. Word has length 52 [2022-11-18 20:24:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:38,066 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3200 transitions. [2022-11-18 20:24:38,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3200 transitions. [2022-11-18 20:24:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:24:38,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:38,069 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] [2022-11-18 20:24:38,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:24:38,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2022-11-18 20:24:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135069182] [2022-11-18 20:24:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:38,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135069182] [2022-11-18 20:24:38,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135069182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:38,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:38,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:24:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800174960] [2022-11-18 20:24:38,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:24:38,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:24:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:38,284 INFO L87 Difference]: Start difference. First operand 2300 states and 3200 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:39,658 INFO L93 Difference]: Finished difference Result 7352 states and 10455 transitions. [2022-11-18 20:24:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-18 20:24:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:39,680 INFO L225 Difference]: With dead ends: 7352 [2022-11-18 20:24:39,681 INFO L226 Difference]: Without dead ends: 6322 [2022-11-18 20:24:39,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:24:39,687 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2818 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:39,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 604 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:24:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2022-11-18 20:24:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 2314. [2022-11-18 20:24:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2310 states have (on average 1.3930735930735931) internal successors, (3218), 2313 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3218 transitions. [2022-11-18 20:24:40,062 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3218 transitions. Word has length 53 [2022-11-18 20:24:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:40,063 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 3218 transitions. [2022-11-18 20:24:40,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3218 transitions. [2022-11-18 20:24:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:24:40,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:40,066 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] [2022-11-18 20:24:40,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:24:40,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2022-11-18 20:24:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:40,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285491954] [2022-11-18 20:24:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:40,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285491954] [2022-11-18 20:24:40,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285491954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:40,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:40,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:24:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590428847] [2022-11-18 20:24:40,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:24:40,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:24:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:40,307 INFO L87 Difference]: Start difference. First operand 2314 states and 3218 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:42,364 INFO L93 Difference]: Finished difference Result 8112 states and 11565 transitions. [2022-11-18 20:24:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:42,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-18 20:24:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:42,390 INFO L225 Difference]: With dead ends: 8112 [2022-11-18 20:24:42,390 INFO L226 Difference]: Without dead ends: 7269 [2022-11-18 20:24:42,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:24:42,394 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2127 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:42,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 765 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:24:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2022-11-18 20:24:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 2336. [2022-11-18 20:24:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2332 states have (on average 1.3932246998284734) internal successors, (3249), 2335 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3249 transitions. [2022-11-18 20:24:42,754 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3249 transitions. Word has length 53 [2022-11-18 20:24:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:42,754 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3249 transitions. [2022-11-18 20:24:42,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3249 transitions. [2022-11-18 20:24:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:24:42,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:42,757 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] [2022-11-18 20:24:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:24:42,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2022-11-18 20:24:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:42,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180715134] [2022-11-18 20:24:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180715134] [2022-11-18 20:24:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180715134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:42,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:42,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:24:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294064650] [2022-11-18 20:24:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:24:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:24:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:24:42,890 INFO L87 Difference]: Start difference. First operand 2336 states and 3249 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:45,443 INFO L93 Difference]: Finished difference Result 9735 states and 13865 transitions. [2022-11-18 20:24:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:24:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-18 20:24:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:45,477 INFO L225 Difference]: With dead ends: 9735 [2022-11-18 20:24:45,478 INFO L226 Difference]: Without dead ends: 8767 [2022-11-18 20:24:45,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:24:45,482 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 3277 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:45,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 658 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:24:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-11-18 20:24:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 2370. [2022-11-18 20:24:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2366 states have (on average 1.3918005071851225) internal successors, (3293), 2369 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3293 transitions. [2022-11-18 20:24:45,978 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3293 transitions. Word has length 53 [2022-11-18 20:24:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:45,979 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 3293 transitions. [2022-11-18 20:24:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3293 transitions. [2022-11-18 20:24:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:24:45,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:45,982 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] [2022-11-18 20:24:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:24:45,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:45,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2022-11-18 20:24:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:45,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713807517] [2022-11-18 20:24:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:45,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:46,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:46,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713807517] [2022-11-18 20:24:46,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713807517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:46,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:46,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:24:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16551134] [2022-11-18 20:24:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:24:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:24:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:46,325 INFO L87 Difference]: Start difference. First operand 2370 states and 3293 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:47,872 INFO L93 Difference]: Finished difference Result 5779 states and 8214 transitions. [2022-11-18 20:24:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:24:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2022-11-18 20:24:47,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:47,883 INFO L225 Difference]: With dead ends: 5779 [2022-11-18 20:24:47,883 INFO L226 Difference]: Without dead ends: 4241 [2022-11-18 20:24:47,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:24:47,885 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2472 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:47,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2472 Valid, 946 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:24:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-11-18 20:24:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2280. [2022-11-18 20:24:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2276 states have (on average 1.390597539543058) internal successors, (3165), 2279 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3165 transitions. [2022-11-18 20:24:48,386 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3165 transitions. Word has length 54 [2022-11-18 20:24:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:48,386 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3165 transitions. [2022-11-18 20:24:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3165 transitions. [2022-11-18 20:24:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:24:48,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:48,389 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] [2022-11-18 20:24:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:24:48,390 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2022-11-18 20:24:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244739272] [2022-11-18 20:24:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:48,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244739272] [2022-11-18 20:24:48,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244739272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:48,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:48,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:24:48,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142032424] [2022-11-18 20:24:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:48,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:24:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:24:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:48,786 INFO L87 Difference]: Start difference. First operand 2280 states and 3165 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:51,257 INFO L93 Difference]: Finished difference Result 7077 states and 10098 transitions. [2022-11-18 20:24:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:24:51,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2022-11-18 20:24:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:51,269 INFO L225 Difference]: With dead ends: 7077 [2022-11-18 20:24:51,270 INFO L226 Difference]: Without dead ends: 5699 [2022-11-18 20:24:51,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:24:51,273 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 2192 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:51,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 1563 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:24:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2022-11-18 20:24:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 2251. [2022-11-18 20:24:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3902981753449044) internal successors, (3124), 2250 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3124 transitions. [2022-11-18 20:24:51,688 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3124 transitions. Word has length 54 [2022-11-18 20:24:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:51,688 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3124 transitions. [2022-11-18 20:24:51,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3124 transitions. [2022-11-18 20:24:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:24:51,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:51,691 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] [2022-11-18 20:24:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:24:51,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2022-11-18 20:24:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:51,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532225074] [2022-11-18 20:24:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:51,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532225074] [2022-11-18 20:24:51,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532225074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:51,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:51,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:24:51,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521362212] [2022-11-18 20:24:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:51,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:24:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:24:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:51,939 INFO L87 Difference]: Start difference. First operand 2251 states and 3124 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:53,964 INFO L93 Difference]: Finished difference Result 5391 states and 7658 transitions. [2022-11-18 20:24:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:24:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2022-11-18 20:24:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:53,974 INFO L225 Difference]: With dead ends: 5391 [2022-11-18 20:24:53,975 INFO L226 Difference]: Without dead ends: 5386 [2022-11-18 20:24:53,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:24:53,977 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1261 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:53,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1233 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:24:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2022-11-18 20:24:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 2251. [2022-11-18 20:24:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3894080996884735) internal successors, (3122), 2250 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3122 transitions. [2022-11-18 20:24:54,687 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3122 transitions. Word has length 54 [2022-11-18 20:24:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:54,687 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3122 transitions. [2022-11-18 20:24:54,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3122 transitions. [2022-11-18 20:24:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:24:54,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:54,690 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] [2022-11-18 20:24:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:24:54,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2022-11-18 20:24:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:54,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267280500] [2022-11-18 20:24:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267280500] [2022-11-18 20:24:54,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267280500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:54,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:54,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252517313] [2022-11-18 20:24:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:54,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:54,753 INFO L87 Difference]: Start difference. First operand 2251 states and 3122 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:55,198 INFO L93 Difference]: Finished difference Result 3193 states and 4471 transitions. [2022-11-18 20:24:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-18 20:24:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:55,203 INFO L225 Difference]: With dead ends: 3193 [2022-11-18 20:24:55,203 INFO L226 Difference]: Without dead ends: 2258 [2022-11-18 20:24:55,205 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 [2022-11-18 20:24:55,205 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 224 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:55,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 798 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:24:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-11-18 20:24:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2251. [2022-11-18 20:24:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3760569648420116) internal successors, (3092), 2250 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3092 transitions. [2022-11-18 20:24:55,741 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3092 transitions. Word has length 55 [2022-11-18 20:24:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:55,742 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3092 transitions. [2022-11-18 20:24:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3092 transitions. [2022-11-18 20:24:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:24:55,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:55,745 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] [2022-11-18 20:24:55,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:24:55,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2022-11-18 20:24:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:55,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849365045] [2022-11-18 20:24:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:55,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:55,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849365045] [2022-11-18 20:24:55,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849365045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:55,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:55,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:55,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951286881] [2022-11-18 20:24:55,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:55,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:55,804 INFO L87 Difference]: Start difference. First operand 2251 states and 3092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:56,344 INFO L93 Difference]: Finished difference Result 3252 states and 4507 transitions. [2022-11-18 20:24:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-18 20:24:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:56,351 INFO L225 Difference]: With dead ends: 3252 [2022-11-18 20:24:56,351 INFO L226 Difference]: Without dead ends: 2257 [2022-11-18 20:24:56,353 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 [2022-11-18 20:24:56,353 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 240 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:56,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:24:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-18 20:24:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2251. [2022-11-18 20:24:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3635959056519804) internal successors, (3064), 2250 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3064 transitions. [2022-11-18 20:24:57,043 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3064 transitions. Word has length 55 [2022-11-18 20:24:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:57,043 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3064 transitions. [2022-11-18 20:24:57,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3064 transitions. [2022-11-18 20:24:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:24:57,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:57,046 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] [2022-11-18 20:24:57,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:24:57,046 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2022-11-18 20:24:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982639793] [2022-11-18 20:24:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:57,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982639793] [2022-11-18 20:24:57,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982639793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:57,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:57,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898689896] [2022-11-18 20:24:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:57,105 INFO L87 Difference]: Start difference. First operand 2251 states and 3064 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:57,575 INFO L93 Difference]: Finished difference Result 3332 states and 4570 transitions. [2022-11-18 20:24:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-18 20:24:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:57,578 INFO L225 Difference]: With dead ends: 3332 [2022-11-18 20:24:57,579 INFO L226 Difference]: Without dead ends: 2242 [2022-11-18 20:24:57,580 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 [2022-11-18 20:24:57,581 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:57,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 814 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:24:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-11-18 20:24:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2236. [2022-11-18 20:24:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2232 states have (on average 1.3440860215053763) internal successors, (3000), 2235 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3000 transitions. [2022-11-18 20:24:58,026 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3000 transitions. Word has length 55 [2022-11-18 20:24:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:58,026 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3000 transitions. [2022-11-18 20:24:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3000 transitions. [2022-11-18 20:24:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:24:58,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:58,030 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] [2022-11-18 20:24:58,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:24:58,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2022-11-18 20:24:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:58,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403385681] [2022-11-18 20:24:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:58,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403385681] [2022-11-18 20:24:58,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403385681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:58,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:58,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:58,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146996900] [2022-11-18 20:24:58,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:58,093 INFO L87 Difference]: Start difference. First operand 2236 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:58,811 INFO L93 Difference]: Finished difference Result 3997 states and 5436 transitions. [2022-11-18 20:24:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-11-18 20:24:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:58,815 INFO L225 Difference]: With dead ends: 3997 [2022-11-18 20:24:58,815 INFO L226 Difference]: Without dead ends: 2740 [2022-11-18 20:24:58,817 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 [2022-11-18 20:24:58,818 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 348 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:58,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 540 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:24:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-18 20:24:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2054. [2022-11-18 20:24:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2050 states have (on average 1.3482926829268294) internal successors, (2764), 2053 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2764 transitions. [2022-11-18 20:24:59,214 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2764 transitions. Word has length 56 [2022-11-18 20:24:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:59,214 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 2764 transitions. [2022-11-18 20:24:59,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2764 transitions. [2022-11-18 20:24:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:24:59,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:59,217 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] [2022-11-18 20:24:59,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:24:59,217 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:24:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2022-11-18 20:24:59,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:59,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114704377] [2022-11-18 20:24:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114704377] [2022-11-18 20:24:59,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114704377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:59,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:59,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81790538] [2022-11-18 20:24:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:59,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:59,294 INFO L87 Difference]: Start difference. First operand 2054 states and 2764 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:59,928 INFO L93 Difference]: Finished difference Result 3721 states and 5059 transitions. [2022-11-18 20:24:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-18 20:24:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:59,932 INFO L225 Difference]: With dead ends: 3721 [2022-11-18 20:24:59,932 INFO L226 Difference]: Without dead ends: 2477 [2022-11-18 20:24:59,933 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 [2022-11-18 20:24:59,933 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 300 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:59,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 458 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:24:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2022-11-18 20:25:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1932. [2022-11-18 20:25:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1928 states have (on average 1.3526970954356847) internal successors, (2608), 1931 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2608 transitions. [2022-11-18 20:25:00,331 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2608 transitions. Word has length 57 [2022-11-18 20:25:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:00,331 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2608 transitions. [2022-11-18 20:25:00,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2608 transitions. [2022-11-18 20:25:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:25:00,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:00,334 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] [2022-11-18 20:25:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:25:00,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2022-11-18 20:25:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551121427] [2022-11-18 20:25:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:00,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551121427] [2022-11-18 20:25:00,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551121427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:00,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:00,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:25:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908084151] [2022-11-18 20:25:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:25:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:25:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:25:00,988 INFO L87 Difference]: Start difference. First operand 1932 states and 2608 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:03,278 INFO L93 Difference]: Finished difference Result 3983 states and 5456 transitions. [2022-11-18 20:25:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:25:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 57 [2022-11-18 20:25:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:03,282 INFO L225 Difference]: With dead ends: 3983 [2022-11-18 20:25:03,282 INFO L226 Difference]: Without dead ends: 3777 [2022-11-18 20:25:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:25:03,283 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2612 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2612 Valid, 3210 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:25:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2022-11-18 20:25:03,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 1907. [2022-11-18 20:25:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1904 states have (on average 1.3539915966386555) internal successors, (2578), 1906 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2578 transitions. [2022-11-18 20:25:03,868 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2578 transitions. Word has length 57 [2022-11-18 20:25:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:03,869 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2578 transitions. [2022-11-18 20:25:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2578 transitions. [2022-11-18 20:25:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:25:03,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:03,872 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] [2022-11-18 20:25:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:25:03,872 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2022-11-18 20:25:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:03,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886468101] [2022-11-18 20:25:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:03,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886468101] [2022-11-18 20:25:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886468101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:04,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:04,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:25:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640924491] [2022-11-18 20:25:04,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:25:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:25:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:25:04,516 INFO L87 Difference]: Start difference. First operand 1907 states and 2578 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:06,836 INFO L93 Difference]: Finished difference Result 3147 states and 4298 transitions. [2022-11-18 20:25:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 57 [2022-11-18 20:25:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:06,840 INFO L225 Difference]: With dead ends: 3147 [2022-11-18 20:25:06,840 INFO L226 Difference]: Without dead ends: 3086 [2022-11-18 20:25:06,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:25:06,842 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2094 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:06,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 2761 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:25:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-11-18 20:25:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1895. [2022-11-18 20:25:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1893 states have (on average 1.3544638140517697) internal successors, (2564), 1894 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2564 transitions. [2022-11-18 20:25:07,254 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2564 transitions. Word has length 57 [2022-11-18 20:25:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:07,255 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 2564 transitions. [2022-11-18 20:25:07,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2564 transitions. [2022-11-18 20:25:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:25:07,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:07,257 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] [2022-11-18 20:25:07,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:25:07,258 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:07,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2022-11-18 20:25:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:07,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438415216] [2022-11-18 20:25:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:07,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:07,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:07,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438415216] [2022-11-18 20:25:07,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438415216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:07,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:07,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:25:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681031117] [2022-11-18 20:25:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:25:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:25:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:25:07,747 INFO L87 Difference]: Start difference. First operand 1895 states and 2564 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:10,347 INFO L93 Difference]: Finished difference Result 4087 states and 5601 transitions. [2022-11-18 20:25:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:25:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 57 [2022-11-18 20:25:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:10,352 INFO L225 Difference]: With dead ends: 4087 [2022-11-18 20:25:10,352 INFO L226 Difference]: Without dead ends: 3873 [2022-11-18 20:25:10,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:25:10,354 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2638 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:10,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 2683 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:25:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-11-18 20:25:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 1844. [2022-11-18 20:25:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.3575691806836678) internal successors, (2502), 1843 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2502 transitions. [2022-11-18 20:25:10,834 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2502 transitions. Word has length 57 [2022-11-18 20:25:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:10,835 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2502 transitions. [2022-11-18 20:25:10,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2502 transitions. [2022-11-18 20:25:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:25:10,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:10,837 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] [2022-11-18 20:25:10,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:25:10,837 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2022-11-18 20:25:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:10,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089739015] [2022-11-18 20:25:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:10,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089739015] [2022-11-18 20:25:10,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089739015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:10,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:10,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:25:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007620589] [2022-11-18 20:25:10,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:10,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:25:10,937 INFO L87 Difference]: Start difference. First operand 1844 states and 2502 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:12,581 INFO L93 Difference]: Finished difference Result 4234 states and 5899 transitions. [2022-11-18 20:25:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:12,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2022-11-18 20:25:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:12,585 INFO L225 Difference]: With dead ends: 4234 [2022-11-18 20:25:12,585 INFO L226 Difference]: Without dead ends: 3116 [2022-11-18 20:25:12,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:25:12,588 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1071 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:12,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 636 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-11-18 20:25:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2748. [2022-11-18 20:25:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2747 states have (on average 1.358937022206043) internal successors, (3733), 2747 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3733 transitions. [2022-11-18 20:25:13,464 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3733 transitions. Word has length 66 [2022-11-18 20:25:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:13,465 INFO L495 AbstractCegarLoop]: Abstraction has 2748 states and 3733 transitions. [2022-11-18 20:25:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3733 transitions. [2022-11-18 20:25:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:25:13,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:13,469 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] [2022-11-18 20:25:13,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:25:13,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2022-11-18 20:25:13,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:13,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011998362] [2022-11-18 20:25:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:13,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:13,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011998362] [2022-11-18 20:25:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011998362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:13,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:13,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:25:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301388829] [2022-11-18 20:25:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:25:13,585 INFO L87 Difference]: Start difference. First operand 2748 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:14,612 INFO L93 Difference]: Finished difference Result 2754 states and 3736 transitions. [2022-11-18 20:25:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:14,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-11-18 20:25:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:14,616 INFO L225 Difference]: With dead ends: 2754 [2022-11-18 20:25:14,616 INFO L226 Difference]: Without dead ends: 2283 [2022-11-18 20:25:14,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:25:14,618 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 580 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:14,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 694 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:25:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2022-11-18 20:25:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2279. [2022-11-18 20:25:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.36215978928885) internal successors, (3103), 2278 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3103 transitions. [2022-11-18 20:25:15,368 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3103 transitions. Word has length 67 [2022-11-18 20:25:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:15,369 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3103 transitions. [2022-11-18 20:25:15,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3103 transitions. [2022-11-18 20:25:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:25:15,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:15,373 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] [2022-11-18 20:25:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:25:15,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2022-11-18 20:25:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:15,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856697051] [2022-11-18 20:25:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:15,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:15,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856697051] [2022-11-18 20:25:15,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856697051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:15,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:15,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448255144] [2022-11-18 20:25:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:15,493 INFO L87 Difference]: Start difference. First operand 2279 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:16,954 INFO L93 Difference]: Finished difference Result 5375 states and 7427 transitions. [2022-11-18 20:25:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-11-18 20:25:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:16,959 INFO L225 Difference]: With dead ends: 5375 [2022-11-18 20:25:16,959 INFO L226 Difference]: Without dead ends: 3757 [2022-11-18 20:25:16,961 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 [2022-11-18 20:25:16,962 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:16,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2022-11-18 20:25:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3507. [2022-11-18 20:25:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.369937250427838) internal successors, (4803), 3506 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4803 transitions. [2022-11-18 20:25:18,131 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4803 transitions. Word has length 68 [2022-11-18 20:25:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:18,132 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 4803 transitions. [2022-11-18 20:25:18,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4803 transitions. [2022-11-18 20:25:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:25:18,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:18,135 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] [2022-11-18 20:25:18,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:25:18,135 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2022-11-18 20:25:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:18,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295532992] [2022-11-18 20:25:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:18,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:18,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:18,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295532992] [2022-11-18 20:25:18,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295532992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:18,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:18,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638275066] [2022-11-18 20:25:18,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:18,241 INFO L87 Difference]: Start difference. First operand 3507 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:20,611 INFO L93 Difference]: Finished difference Result 8767 states and 12085 transitions. [2022-11-18 20:25:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-11-18 20:25:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:20,617 INFO L225 Difference]: With dead ends: 8767 [2022-11-18 20:25:20,617 INFO L226 Difference]: Without dead ends: 5783 [2022-11-18 20:25:20,619 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 [2022-11-18 20:25:20,620 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 118 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2022-11-18 20:25:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5365. [2022-11-18 20:25:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 1.360738255033557) internal successors, (7299), 5364 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7299 transitions. [2022-11-18 20:25:22,450 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7299 transitions. Word has length 70 [2022-11-18 20:25:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:22,450 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7299 transitions. [2022-11-18 20:25:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7299 transitions. [2022-11-18 20:25:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:25:22,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:22,453 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] [2022-11-18 20:25:22,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:25:22,453 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2022-11-18 20:25:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:22,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296869181] [2022-11-18 20:25:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:22,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:22,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296869181] [2022-11-18 20:25:22,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296869181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:22,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:22,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:22,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553457728] [2022-11-18 20:25:22,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:22,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:22,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:22,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:22,548 INFO L87 Difference]: Start difference. First operand 5365 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:26,579 INFO L93 Difference]: Finished difference Result 14489 states and 19829 transitions. [2022-11-18 20:25:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-11-18 20:25:26,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:26,588 INFO L225 Difference]: With dead ends: 14489 [2022-11-18 20:25:26,588 INFO L226 Difference]: Without dead ends: 9647 [2022-11-18 20:25:26,592 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 [2022-11-18 20:25:26,592 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 97 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:26,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 528 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2022-11-18 20:25:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 8813. [2022-11-18 20:25:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8813 states, 8812 states have (on average 1.3571266454834316) internal successors, (11959), 8812 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 11959 transitions. [2022-11-18 20:25:29,816 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 11959 transitions. Word has length 70 [2022-11-18 20:25:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:29,816 INFO L495 AbstractCegarLoop]: Abstraction has 8813 states and 11959 transitions. [2022-11-18 20:25:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 11959 transitions. [2022-11-18 20:25:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:25:29,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:29,818 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] [2022-11-18 20:25:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:25:29,819 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2022-11-18 20:25:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:29,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969176017] [2022-11-18 20:25:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:29,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:30,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969176017] [2022-11-18 20:25:30,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969176017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:30,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:30,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:25:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633732062] [2022-11-18 20:25:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:25:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:25:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:25:30,009 INFO L87 Difference]: Start difference. First operand 8813 states and 11959 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:38,648 INFO L93 Difference]: Finished difference Result 18941 states and 25281 transitions. [2022-11-18 20:25:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:25:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 72 [2022-11-18 20:25:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:38,683 INFO L225 Difference]: With dead ends: 18941 [2022-11-18 20:25:38,683 INFO L226 Difference]: Without dead ends: 18939 [2022-11-18 20:25:38,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:25:38,689 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 346 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:38,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1309 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18939 states. [2022-11-18 20:25:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18939 to 9725. [2022-11-18 20:25:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9725 states, 9724 states have (on average 1.3236322501028384) internal successors, (12871), 9724 states have internal predecessors, (12871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 12871 transitions. [2022-11-18 20:25:42,870 INFO L78 Accepts]: Start accepts. Automaton has 9725 states and 12871 transitions. Word has length 72 [2022-11-18 20:25:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:42,871 INFO L495 AbstractCegarLoop]: Abstraction has 9725 states and 12871 transitions. [2022-11-18 20:25:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 9725 states and 12871 transitions. [2022-11-18 20:25:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:25:42,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:42,874 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] [2022-11-18 20:25:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:25:42,874 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2022-11-18 20:25:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:42,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874804316] [2022-11-18 20:25:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:42,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:42,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874804316] [2022-11-18 20:25:42,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874804316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:42,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:42,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819788027] [2022-11-18 20:25:42,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:42,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:42,936 INFO L87 Difference]: Start difference. First operand 9725 states and 12871 transitions. 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) [2022-11-18 20:25:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:49,261 INFO L93 Difference]: Finished difference Result 23589 states and 31277 transitions. [2022-11-18 20:25:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:49,262 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 [2022-11-18 20:25:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:49,277 INFO L225 Difference]: With dead ends: 23589 [2022-11-18 20:25:49,277 INFO L226 Difference]: Without dead ends: 14387 [2022-11-18 20:25:49,282 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 [2022-11-18 20:25:49,283 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:25:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14387 states. [2022-11-18 20:25:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14387 to 14233. [2022-11-18 20:25:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14233 states, 14232 states have (on average 1.303752107925801) internal successors, (18555), 14232 states have internal predecessors, (18555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14233 states to 14233 states and 18555 transitions. [2022-11-18 20:25:55,577 INFO L78 Accepts]: Start accepts. Automaton has 14233 states and 18555 transitions. Word has length 73 [2022-11-18 20:25:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:55,578 INFO L495 AbstractCegarLoop]: Abstraction has 14233 states and 18555 transitions. [2022-11-18 20:25:55,578 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) [2022-11-18 20:25:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 14233 states and 18555 transitions. [2022-11-18 20:25:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:25:55,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:55,580 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] [2022-11-18 20:25:55,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:25:55,581 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:25:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2022-11-18 20:25:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:55,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416687322] [2022-11-18 20:25:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:55,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416687322] [2022-11-18 20:25:55,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416687322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:55,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:55,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:25:55,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479726665] [2022-11-18 20:25:55,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:55,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:55,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:25:55,682 INFO L87 Difference]: Start difference. First operand 14233 states and 18555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2022-11-18 20:26:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:03,139 INFO L93 Difference]: Finished difference Result 20743 states and 27195 transitions. [2022-11-18 20:26:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:26:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 [2022-11-18 20:26:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:03,156 INFO L225 Difference]: With dead ends: 20743 [2022-11-18 20:26:03,156 INFO L226 Difference]: Without dead ends: 17267 [2022-11-18 20:26:03,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:26:03,161 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 637 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:03,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 803 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:26:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17267 states. [2022-11-18 20:26:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17267 to 16091. [2022-11-18 20:26:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16090 states have (on average 1.2998756991920448) internal successors, (20915), 16090 states have internal predecessors, (20915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20915 transitions. [2022-11-18 20:26:10,409 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20915 transitions. Word has length 74 [2022-11-18 20:26:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:10,409 INFO L495 AbstractCegarLoop]: Abstraction has 16091 states and 20915 transitions. [2022-11-18 20:26:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2022-11-18 20:26:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20915 transitions. [2022-11-18 20:26:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:26:10,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:10,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:26:10,415 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:26:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2022-11-18 20:26:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:10,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42924722] [2022-11-18 20:26:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:26:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42924722] [2022-11-18 20:26:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42924722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:10,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:10,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:26:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435090034] [2022-11-18 20:26:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:26:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:26:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:26:10,696 INFO L87 Difference]: Start difference. First operand 16091 states and 20915 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:34,406 INFO L93 Difference]: Finished difference Result 58864 states and 76348 transitions. [2022-11-18 20:26:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:26:34,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2022-11-18 20:26:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:34,490 INFO L225 Difference]: With dead ends: 58864 [2022-11-18 20:26:34,490 INFO L226 Difference]: Without dead ends: 51000 [2022-11-18 20:26:34,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:26:34,503 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1493 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:34,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1341 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:26:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51000 states. [2022-11-18 20:26:41,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51000 to 16033. [2022-11-18 20:26:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16033 states, 16032 states have (on average 1.3002120758483033) internal successors, (20845), 16032 states have internal predecessors, (20845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16033 states to 16033 states and 20845 transitions. [2022-11-18 20:26:42,014 INFO L78 Accepts]: Start accepts. Automaton has 16033 states and 20845 transitions. Word has length 92 [2022-11-18 20:26:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:42,014 INFO L495 AbstractCegarLoop]: Abstraction has 16033 states and 20845 transitions. [2022-11-18 20:26:42,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 16033 states and 20845 transitions. [2022-11-18 20:26:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:26:42,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:42,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:26:42,020 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:26:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1332578409, now seen corresponding path program 1 times [2022-11-18 20:26:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248084030] [2022-11-18 20:26:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:26:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248084030] [2022-11-18 20:26:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248084030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:26:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271490287] [2022-11-18 20:26:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:26:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:26:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:26:42,446 INFO L87 Difference]: Start difference. First operand 16033 states and 20845 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:58,707 INFO L93 Difference]: Finished difference Result 40121 states and 52033 transitions. [2022-11-18 20:26:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:26:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2022-11-18 20:26:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:58,754 INFO L225 Difference]: With dead ends: 40121 [2022-11-18 20:26:58,754 INFO L226 Difference]: Without dead ends: 32439 [2022-11-18 20:26:58,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:26:58,763 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1761 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:58,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 948 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:26:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32439 states. [2022-11-18 20:27:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32439 to 15999. [2022-11-18 20:27:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15999 states, 15998 states have (on average 1.3002875359419928) internal successors, (20802), 15998 states have internal predecessors, (20802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15999 states to 15999 states and 20802 transitions. [2022-11-18 20:27:06,986 INFO L78 Accepts]: Start accepts. Automaton has 15999 states and 20802 transitions. Word has length 92 [2022-11-18 20:27:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:06,986 INFO L495 AbstractCegarLoop]: Abstraction has 15999 states and 20802 transitions. [2022-11-18 20:27:06,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 15999 states and 20802 transitions. [2022-11-18 20:27:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:27:06,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:06,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:06,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:27:06,992 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-18 20:27:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1785022088, now seen corresponding path program 1 times [2022-11-18 20:27:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:06,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339205002] [2022-11-18 20:27:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:07,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339205002] [2022-11-18 20:27:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339205002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926122192] [2022-11-18 20:27:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:07,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:07,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:07,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ad59717-0c9b-49b8-b956-cb5c1f4f34ff/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:27:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:07,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:27:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:09,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:10,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926122192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:27:10,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:27:10,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2022-11-18 20:27:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903577465] [2022-11-18 20:27:10,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:27:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:27:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:27:10,404 INFO L87 Difference]: Start difference. First operand 15999 states and 20802 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 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)