./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc --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 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe --- 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-5e519f3 [2022-11-02 21:09:15,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:15,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:16,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:16,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:16,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:16,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:16,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:16,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:16,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:16,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:16,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:16,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:16,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:16,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:16,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:16,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:16,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:16,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:16,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:16,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:16,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:16,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:16,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:16,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:16,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:16,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:16,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:16,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:16,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:16,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:16,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:16,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:16,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:16,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:16,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:16,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:16,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:16,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:16,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:16,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:16,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:09:16,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:16,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:16,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:16,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:16,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:16,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:16,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:16,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:16,113 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:16,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:16,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:16,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:16,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:16,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:16,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:16,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:16,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:16,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:16,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:16,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:16,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:16,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:16,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:16,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:16,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:16,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:16,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:16,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:16,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:16,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:16,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:09:16,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:09:16,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:16,118 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_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe [2022-11-02 21:09:16,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:16,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:16,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:16,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:16,400 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:16,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 21:09:16,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/data/007bfaed3/7d0306a6a5d74693bdd5f627580e0d7f/FLAGbef2c62a5 [2022-11-02 21:09:17,113 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:17,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 21:09:17,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/data/007bfaed3/7d0306a6a5d74693bdd5f627580e0d7f/FLAGbef2c62a5 [2022-11-02 21:09:17,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/data/007bfaed3/7d0306a6a5d74693bdd5f627580e0d7f [2022-11-02 21:09:17,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:17,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:17,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:17,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:17,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:17,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:17" (1/1) ... [2022-11-02 21:09:17,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e07695f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:17, skipping insertion in model container [2022-11-02 21:09:17,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:17" (1/1) ... [2022-11-02 21:09:17,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:17,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:17,868 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-02 21:09:17,913 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-02 21:09:17,935 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-02 21:09:17,945 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-02 21:09:18,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:18,189 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:18,256 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-02 21:09:18,287 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-02 21:09:18,306 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-02 21:09:18,314 WARN L230 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_cca3d956-d2f0-4aea-ada9-44452d313181/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-02 21:09:18,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:18,461 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:18,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18 WrapperNode [2022-11-02 21:09:18,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:18,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:18,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:18,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:18,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,680 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2589 [2022-11-02 21:09:18,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:18,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:18,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:18,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:18,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:18,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:18,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:18,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:18,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (1/1) ... [2022-11-02 21:09:18,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:18,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:18,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:09:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:09:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:19,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:19,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:09:20,772 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:09:20,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:09:20,794 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:09:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:20 BoogieIcfgContainer [2022-11-02 21:09:20,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:09:20,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:09:20,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:09:20,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:09:20,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:17" (1/3) ... [2022-11-02 21:09:20,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e35699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:20, skipping insertion in model container [2022-11-02 21:09:20,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:18" (2/3) ... [2022-11-02 21:09:20,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e35699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:09:20, skipping insertion in model container [2022-11-02 21:09:20,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:20" (3/3) ... [2022-11-02 21:09:20,809 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 21:09:20,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:09:20,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 21:09:20,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:09:20,933 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;@5ecc5608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:09:20,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 21:09:20,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 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) [2022-11-02 21:09:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:09:20,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:20,999 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] [2022-11-02 21:09:20,999 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)] === [2022-11-02 21:09:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2022-11-02 21:09:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:21,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078328319] [2022-11-02 21:09:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:21,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078328319] [2022-11-02 21:09:21,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078328319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:21,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:21,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938560541] [2022-11-02 21:09:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:21,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:21,505 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2022-11-02 21:09:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:21,671 INFO L93 Difference]: Finished difference Result 725 states and 1271 transitions. [2022-11-02 21:09:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:21,674 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 [2022-11-02 21:09:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:21,689 INFO L225 Difference]: With dead ends: 725 [2022-11-02 21:09:21,690 INFO L226 Difference]: Without dead ends: 571 [2022-11-02 21:09:21,693 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 [2022-11-02 21:09:21,697 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 438 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:21,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1416 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-02 21:09:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2022-11-02 21:09:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 561 states have (on average 1.3440285204991087) internal successors, (754), 564 states have internal predecessors, (754), 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) [2022-11-02 21:09:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 754 transitions. [2022-11-02 21:09:21,779 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 754 transitions. Word has length 51 [2022-11-02 21:09:21,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:21,779 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 754 transitions. [2022-11-02 21:09:21,780 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) [2022-11-02 21:09:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 754 transitions. [2022-11-02 21:09:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:09:21,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:21,782 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] [2022-11-02 21:09:21,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:09:21,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1349444518, now seen corresponding path program 1 times [2022-11-02 21:09:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:21,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700993321] [2022-11-02 21:09:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:22,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700993321] [2022-11-02 21:09:22,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700993321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:22,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:22,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973010253] [2022-11-02 21:09:22,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:22,049 INFO L87 Difference]: Start difference. First operand 565 states and 754 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) [2022-11-02 21:09:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:22,242 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2022-11-02 21:09:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:22,243 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 [2022-11-02 21:09:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:22,249 INFO L225 Difference]: With dead ends: 994 [2022-11-02 21:09:22,249 INFO L226 Difference]: Without dead ends: 781 [2022-11-02 21:09:22,253 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 [2022-11-02 21:09:22,255 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 314 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:22,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1017 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-02 21:09:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 774. [2022-11-02 21:09:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 770 states have (on average 1.3714285714285714) internal successors, (1056), 773 states have internal predecessors, (1056), 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) [2022-11-02 21:09:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1056 transitions. [2022-11-02 21:09:22,345 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1056 transitions. Word has length 51 [2022-11-02 21:09:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:22,348 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1056 transitions. [2022-11-02 21:09:22,349 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) [2022-11-02 21:09:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1056 transitions. [2022-11-02 21:09:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:09:22,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:22,357 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] [2022-11-02 21:09:22,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:09:22,359 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)] === [2022-11-02 21:09:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1493728400, now seen corresponding path program 1 times [2022-11-02 21:09:22,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:22,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125889400] [2022-11-02 21:09:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:22,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125889400] [2022-11-02 21:09:22,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125889400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:22,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:22,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976099936] [2022-11-02 21:09:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:22,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:22,601 INFO L87 Difference]: Start difference. First operand 774 states and 1056 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) [2022-11-02 21:09:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:23,168 INFO L93 Difference]: Finished difference Result 1716 states and 2415 transitions. [2022-11-02 21:09:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:23,169 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 [2022-11-02 21:09:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:23,176 INFO L225 Difference]: With dead ends: 1716 [2022-11-02 21:09:23,176 INFO L226 Difference]: Without dead ends: 1059 [2022-11-02 21:09:23,181 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 [2022-11-02 21:09:23,184 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1737 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:23,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 391 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:09:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-02 21:09:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1053. [2022-11-02 21:09:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1049 states have (on average 1.4089609151572926) internal successors, (1478), 1052 states have internal predecessors, (1478), 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) [2022-11-02 21:09:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1478 transitions. [2022-11-02 21:09:23,293 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1478 transitions. Word has length 51 [2022-11-02 21:09:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:23,295 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1478 transitions. [2022-11-02 21:09:23,295 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) [2022-11-02 21:09:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1478 transitions. [2022-11-02 21:09:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 21:09:23,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:23,298 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] [2022-11-02 21:09:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:09:23,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -358090099, now seen corresponding path program 1 times [2022-11-02 21:09:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477904234] [2022-11-02 21:09:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:23,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477904234] [2022-11-02 21:09:23,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477904234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:23,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:23,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434058244] [2022-11-02 21:09:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:23,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:23,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:23,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:23,397 INFO L87 Difference]: Start difference. First operand 1053 states and 1478 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2022-11-02 21:09:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:23,607 INFO L93 Difference]: Finished difference Result 2099 states and 2965 transitions. [2022-11-02 21:09:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:23,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 [2022-11-02 21:09:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:23,614 INFO L225 Difference]: With dead ends: 2099 [2022-11-02 21:09:23,615 INFO L226 Difference]: Without dead ends: 1399 [2022-11-02 21:09:23,616 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 [2022-11-02 21:09:23,624 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 364 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:23,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 929 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2022-11-02 21:09:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1385. [2022-11-02 21:09:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1381 states have (on average 1.3721940622737148) internal successors, (1895), 1384 states have internal predecessors, (1895), 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) [2022-11-02 21:09:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1895 transitions. [2022-11-02 21:09:23,774 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1895 transitions. Word has length 52 [2022-11-02 21:09:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:23,775 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1895 transitions. [2022-11-02 21:09:23,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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) [2022-11-02 21:09:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1895 transitions. [2022-11-02 21:09:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 21:09:23,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:23,779 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] [2022-11-02 21:09:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:09:23,779 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)] === [2022-11-02 21:09:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2022-11-02 21:09:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036836885] [2022-11-02 21:09:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:23,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:23,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036836885] [2022-11-02 21:09:23,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036836885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:23,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:23,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661545073] [2022-11-02 21:09:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:23,970 INFO L87 Difference]: Start difference. First operand 1385 states and 1895 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) [2022-11-02 21:09:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:24,505 INFO L93 Difference]: Finished difference Result 2980 states and 4125 transitions. [2022-11-02 21:09:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:24,506 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 [2022-11-02 21:09:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:24,513 INFO L225 Difference]: With dead ends: 2980 [2022-11-02 21:09:24,513 INFO L226 Difference]: Without dead ends: 1767 [2022-11-02 21:09:24,515 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 [2022-11-02 21:09:24,516 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1521 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:24,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 367 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-11-02 21:09:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1755. [2022-11-02 21:09:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1751 states have (on average 1.3774985722444317) internal successors, (2412), 1754 states have internal predecessors, (2412), 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) [2022-11-02 21:09:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2412 transitions. [2022-11-02 21:09:24,773 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2412 transitions. Word has length 52 [2022-11-02 21:09:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:24,775 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2412 transitions. [2022-11-02 21:09:24,776 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) [2022-11-02 21:09:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2412 transitions. [2022-11-02 21:09:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 21:09:24,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:24,781 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] [2022-11-02 21:09:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:09:24,782 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)] === [2022-11-02 21:09:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -482685133, now seen corresponding path program 1 times [2022-11-02 21:09:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707804669] [2022-11-02 21:09:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:24,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707804669] [2022-11-02 21:09:24,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707804669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:24,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:24,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740930453] [2022-11-02 21:09:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:24,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:24,944 INFO L87 Difference]: Start difference. First operand 1755 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2022-11-02 21:09:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:25,551 INFO L93 Difference]: Finished difference Result 3900 states and 5393 transitions. [2022-11-02 21:09:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:25,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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 [2022-11-02 21:09:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:25,560 INFO L225 Difference]: With dead ends: 3900 [2022-11-02 21:09:25,560 INFO L226 Difference]: Without dead ends: 2317 [2022-11-02 21:09:25,563 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 [2022-11-02 21:09:25,564 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1366 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:25,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 335 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-11-02 21:09:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2301. [2022-11-02 21:09:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2297 states have (on average 1.370047888550283) internal successors, (3147), 2300 states have internal predecessors, (3147), 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) [2022-11-02 21:09:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3147 transitions. [2022-11-02 21:09:25,872 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3147 transitions. Word has length 53 [2022-11-02 21:09:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:25,872 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3147 transitions. [2022-11-02 21:09:25,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 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) [2022-11-02 21:09:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3147 transitions. [2022-11-02 21:09:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:09:25,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:25,875 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] [2022-11-02 21:09:25,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:09:25,876 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)] === [2022-11-02 21:09:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1630046103, now seen corresponding path program 1 times [2022-11-02 21:09:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:25,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618605644] [2022-11-02 21:09:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618605644] [2022-11-02 21:09:26,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618605644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:26,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:26,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178992070] [2022-11-02 21:09:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:26,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:26,018 INFO L87 Difference]: Start difference. First operand 2301 states and 3147 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:27,548 INFO L93 Difference]: Finished difference Result 7377 states and 10306 transitions. [2022-11-02 21:09:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-11-02 21:09:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:27,571 INFO L225 Difference]: With dead ends: 7377 [2022-11-02 21:09:27,572 INFO L226 Difference]: Without dead ends: 6335 [2022-11-02 21:09:27,575 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 [2022-11-02 21:09:27,576 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2702 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:27,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 599 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:09:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2022-11-02 21:09:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 2315. [2022-11-02 21:09:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2311 states have (on average 1.3695369969710083) internal successors, (3165), 2314 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) [2022-11-02 21:09:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3165 transitions. [2022-11-02 21:09:27,997 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3165 transitions. Word has length 54 [2022-11-02 21:09:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:27,997 INFO L495 AbstractCegarLoop]: Abstraction has 2315 states and 3165 transitions. [2022-11-02 21:09:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3165 transitions. [2022-11-02 21:09:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:09:28,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:28,002 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] [2022-11-02 21:09:28,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:09:28,002 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)] === [2022-11-02 21:09:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2022-11-02 21:09:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:28,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292682658] [2022-11-02 21:09:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:28,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:28,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292682658] [2022-11-02 21:09:28,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292682658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:28,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:28,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:28,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266664691] [2022-11-02 21:09:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:28,185 INFO L87 Difference]: Start difference. First operand 2315 states and 3165 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:30,201 INFO L93 Difference]: Finished difference Result 8133 states and 11423 transitions. [2022-11-02 21:09:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-11-02 21:09:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:30,229 INFO L225 Difference]: With dead ends: 8133 [2022-11-02 21:09:30,229 INFO L226 Difference]: Without dead ends: 7286 [2022-11-02 21:09:30,232 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 [2022-11-02 21:09:30,233 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2024 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:30,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 757 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2022-11-02 21:09:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 2337. [2022-11-02 21:09:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2333 states have (on average 1.36990998714102) internal successors, (3196), 2336 states have internal predecessors, (3196), 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) [2022-11-02 21:09:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3196 transitions. [2022-11-02 21:09:30,645 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3196 transitions. Word has length 54 [2022-11-02 21:09:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:30,647 INFO L495 AbstractCegarLoop]: Abstraction has 2337 states and 3196 transitions. [2022-11-02 21:09:30,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3196 transitions. [2022-11-02 21:09:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:09:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:30,650 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] [2022-11-02 21:09:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:09:30,651 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)] === [2022-11-02 21:09:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 269556297, now seen corresponding path program 1 times [2022-11-02 21:09:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583542124] [2022-11-02 21:09:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583542124] [2022-11-02 21:09:30,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583542124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:30,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:30,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097506131] [2022-11-02 21:09:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:30,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:09:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:30,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:09:30,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:09:30,862 INFO L87 Difference]: Start difference. First operand 2337 states and 3196 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:33,245 INFO L93 Difference]: Finished difference Result 9898 states and 13851 transitions. [2022-11-02 21:09:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:33,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2022-11-02 21:09:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:33,279 INFO L225 Difference]: With dead ends: 9898 [2022-11-02 21:09:33,280 INFO L226 Difference]: Without dead ends: 8930 [2022-11-02 21:09:33,284 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 [2022-11-02 21:09:33,285 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 3178 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:33,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 655 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2022-11-02 21:09:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 2371. [2022-11-02 21:09:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2367 states have (on average 1.3688212927756653) internal successors, (3240), 2370 states have internal predecessors, (3240), 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) [2022-11-02 21:09:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3240 transitions. [2022-11-02 21:09:33,868 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3240 transitions. Word has length 54 [2022-11-02 21:09:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:33,868 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3240 transitions. [2022-11-02 21:09:33,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2022-11-02 21:09:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3240 transitions. [2022-11-02 21:09:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 21:09:33,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:33,871 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] [2022-11-02 21:09:33,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:09:33,872 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)] === [2022-11-02 21:09:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2022-11-02 21:09:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:33,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545636272] [2022-11-02 21:09:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:34,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:34,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545636272] [2022-11-02 21:09:34,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545636272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:34,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:34,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:09:34,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024822229] [2022-11-02 21:09:34,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:34,249 INFO L87 Difference]: Start difference. First operand 2371 states and 3240 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-11-02 21:09:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:35,897 INFO L93 Difference]: Finished difference Result 5804 states and 8101 transitions. [2022-11-02 21:09:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:35,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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 [2022-11-02 21:09:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:35,910 INFO L225 Difference]: With dead ends: 5804 [2022-11-02 21:09:35,910 INFO L226 Difference]: Without dead ends: 4260 [2022-11-02 21:09:35,913 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 [2022-11-02 21:09:35,914 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2434 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:35,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 929 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:09:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2022-11-02 21:09:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 2284. [2022-11-02 21:09:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2280 states have (on average 1.3675438596491227) internal successors, (3118), 2283 states have internal predecessors, (3118), 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) [2022-11-02 21:09:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3118 transitions. [2022-11-02 21:09:36,369 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3118 transitions. Word has length 55 [2022-11-02 21:09:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:36,370 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3118 transitions. [2022-11-02 21:09:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 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) [2022-11-02 21:09:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3118 transitions. [2022-11-02 21:09:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 21:09:36,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:36,372 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] [2022-11-02 21:09:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:09:36,373 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)] === [2022-11-02 21:09:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2022-11-02 21:09:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:36,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65572763] [2022-11-02 21:09:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:36,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65572763] [2022-11-02 21:09:36,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65572763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:36,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:36,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771841129] [2022-11-02 21:09:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:09:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:09:36,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:09:36,694 INFO L87 Difference]: Start difference. First operand 2284 states and 3118 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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) [2022-11-02 21:09:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:39,043 INFO L93 Difference]: Finished difference Result 7120 states and 9979 transitions. [2022-11-02 21:09:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:09:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 [2022-11-02 21:09:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:39,055 INFO L225 Difference]: With dead ends: 7120 [2022-11-02 21:09:39,055 INFO L226 Difference]: Without dead ends: 5730 [2022-11-02 21:09:39,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:09:39,058 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2130 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:39,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1543 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:09:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2022-11-02 21:09:39,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 2255. [2022-11-02 21:09:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3669480231008442) internal successors, (3077), 2254 states have internal predecessors, (3077), 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) [2022-11-02 21:09:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3077 transitions. [2022-11-02 21:09:39,570 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3077 transitions. Word has length 55 [2022-11-02 21:09:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:39,571 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3077 transitions. [2022-11-02 21:09:39,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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) [2022-11-02 21:09:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3077 transitions. [2022-11-02 21:09:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 21:09:39,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:39,577 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] [2022-11-02 21:09:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:09:39,578 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)] === [2022-11-02 21:09:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2022-11-02 21:09:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057626850] [2022-11-02 21:09:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:39,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057626850] [2022-11-02 21:09:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057626850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:39,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:39,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252619586] [2022-11-02 21:09:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:09:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:09:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:09:39,856 INFO L87 Difference]: Start difference. First operand 2255 states and 3077 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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) [2022-11-02 21:09:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:42,101 INFO L93 Difference]: Finished difference Result 5396 states and 7541 transitions. [2022-11-02 21:09:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:09:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 [2022-11-02 21:09:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:42,109 INFO L225 Difference]: With dead ends: 5396 [2022-11-02 21:09:42,109 INFO L226 Difference]: Without dead ends: 5391 [2022-11-02 21:09:42,111 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 [2022-11-02 21:09:42,112 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1226 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1222 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:09:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2022-11-02 21:09:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 2255. [2022-11-02 21:09:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3660595290981785) internal successors, (3075), 2254 states have internal predecessors, (3075), 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) [2022-11-02 21:09:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3075 transitions. [2022-11-02 21:09:42,584 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3075 transitions. Word has length 55 [2022-11-02 21:09:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:42,585 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3075 transitions. [2022-11-02 21:09:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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) [2022-11-02 21:09:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3075 transitions. [2022-11-02 21:09:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:09:42,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:42,588 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] [2022-11-02 21:09:42,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:09:42,588 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)] === [2022-11-02 21:09:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2022-11-02 21:09:42,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332730003] [2022-11-02 21:09:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332730003] [2022-11-02 21:09:42,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332730003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:42,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:42,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:42,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186523739] [2022-11-02 21:09:42,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:42,649 INFO L87 Difference]: Start difference. First operand 2255 states and 3075 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) [2022-11-02 21:09:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:43,106 INFO L93 Difference]: Finished difference Result 3200 states and 4403 transitions. [2022-11-02 21:09:43,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:43,107 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 [2022-11-02 21:09:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:43,110 INFO L225 Difference]: With dead ends: 3200 [2022-11-02 21:09:43,111 INFO L226 Difference]: Without dead ends: 2262 [2022-11-02 21:09:43,112 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 [2022-11-02 21:09:43,113 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 222 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 791 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 [2022-11-02 21:09:43,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 791 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-11-02 21:09:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2255. [2022-11-02 21:09:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3527321190581965) internal successors, (3045), 2254 states have internal predecessors, (3045), 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) [2022-11-02 21:09:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3045 transitions. [2022-11-02 21:09:43,821 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3045 transitions. Word has length 56 [2022-11-02 21:09:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:43,821 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3045 transitions. [2022-11-02 21:09:43,822 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) [2022-11-02 21:09:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3045 transitions. [2022-11-02 21:09:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:09:43,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:43,824 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] [2022-11-02 21:09:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:09:43,825 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)] === [2022-11-02 21:09:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2022-11-02 21:09:43,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:43,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17083789] [2022-11-02 21:09:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:43,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:43,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17083789] [2022-11-02 21:09:43,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17083789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:43,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:43,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310422007] [2022-11-02 21:09:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:43,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:43,892 INFO L87 Difference]: Start difference. First operand 2255 states and 3045 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) [2022-11-02 21:09:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:44,427 INFO L93 Difference]: Finished difference Result 3257 states and 4435 transitions. [2022-11-02 21:09:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:44,427 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 [2022-11-02 21:09:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:44,431 INFO L225 Difference]: With dead ends: 3257 [2022-11-02 21:09:44,431 INFO L226 Difference]: Without dead ends: 2261 [2022-11-02 21:09:44,433 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 [2022-11-02 21:09:44,434 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 238 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 796 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 [2022-11-02 21:09:44,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 796 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-11-02 21:09:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2255. [2022-11-02 21:09:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3402932030208796) internal successors, (3017), 2254 states have internal predecessors, (3017), 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) [2022-11-02 21:09:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3017 transitions. [2022-11-02 21:09:45,165 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3017 transitions. Word has length 56 [2022-11-02 21:09:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:45,165 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3017 transitions. [2022-11-02 21:09:45,166 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) [2022-11-02 21:09:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3017 transitions. [2022-11-02 21:09:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:09:45,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:45,169 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] [2022-11-02 21:09:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:09:45,169 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)] === [2022-11-02 21:09:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2022-11-02 21:09:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:45,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352206590] [2022-11-02 21:09:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:45,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:45,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352206590] [2022-11-02 21:09:45,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352206590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:45,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:45,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533007034] [2022-11-02 21:09:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:45,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:45,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:45,250 INFO L87 Difference]: Start difference. First operand 2255 states and 3017 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) [2022-11-02 21:09:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:45,828 INFO L93 Difference]: Finished difference Result 3345 states and 4505 transitions. [2022-11-02 21:09:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:45,828 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 [2022-11-02 21:09:45,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:45,832 INFO L225 Difference]: With dead ends: 3345 [2022-11-02 21:09:45,833 INFO L226 Difference]: Without dead ends: 2246 [2022-11-02 21:09:45,835 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 [2022-11-02 21:09:45,836 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 257 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 811 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 [2022-11-02 21:09:45,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 811 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:09:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-02 21:09:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2240. [2022-11-02 21:09:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2236 states have (on average 1.3206618962432917) internal successors, (2953), 2239 states have internal predecessors, (2953), 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) [2022-11-02 21:09:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2953 transitions. [2022-11-02 21:09:46,246 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2953 transitions. Word has length 56 [2022-11-02 21:09:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:46,246 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 2953 transitions. [2022-11-02 21:09:46,246 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) [2022-11-02 21:09:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2953 transitions. [2022-11-02 21:09:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:09:46,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:46,250 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] [2022-11-02 21:09:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:09:46,251 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)] === [2022-11-02 21:09:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1293695138, now seen corresponding path program 1 times [2022-11-02 21:09:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:46,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405053917] [2022-11-02 21:09:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:46,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405053917] [2022-11-02 21:09:46,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405053917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:46,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:46,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:09:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722883093] [2022-11-02 21:09:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:46,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:09:46,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:09:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:09:46,311 INFO L87 Difference]: Start difference. First operand 2240 states and 2953 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) [2022-11-02 21:09:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:46,981 INFO L93 Difference]: Finished difference Result 4004 states and 5341 transitions. [2022-11-02 21:09:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:09:46,982 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 [2022-11-02 21:09:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:46,984 INFO L225 Difference]: With dead ends: 4004 [2022-11-02 21:09:46,984 INFO L226 Difference]: Without dead ends: 2744 [2022-11-02 21:09:46,986 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 [2022-11-02 21:09:46,987 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 346 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 548 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 [2022-11-02 21:09:46,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 548 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-11-02 21:09:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2058. [2022-11-02 21:09:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2054 states have (on average 1.3227848101265822) internal successors, (2717), 2057 states have internal predecessors, (2717), 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) [2022-11-02 21:09:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2717 transitions. [2022-11-02 21:09:47,350 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2717 transitions. Word has length 57 [2022-11-02 21:09:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 2058 states and 2717 transitions. [2022-11-02 21:09:47,351 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) [2022-11-02 21:09:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2717 transitions. [2022-11-02 21:09:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:09:47,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:47,354 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] [2022-11-02 21:09:47,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:09:47,355 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2022-11-02 21:09:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91896032] [2022-11-02 21:09:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91896032] [2022-11-02 21:09:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91896032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:47,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:47,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:09:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146959205] [2022-11-02 21:09:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:09:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:09:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:09:47,974 INFO L87 Difference]: Start difference. First operand 2058 states and 2717 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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) [2022-11-02 21:09:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:50,617 INFO L93 Difference]: Finished difference Result 4944 states and 6655 transitions. [2022-11-02 21:09:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:09:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 58 [2022-11-02 21:09:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:50,624 INFO L225 Difference]: With dead ends: 4944 [2022-11-02 21:09:50,625 INFO L226 Difference]: Without dead ends: 4734 [2022-11-02 21:09:50,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:09:50,627 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 2638 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:50,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 2937 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-11-02 21:09:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 2033. [2022-11-02 21:09:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2030 states have (on average 1.3236453201970444) internal successors, (2687), 2032 states have internal predecessors, (2687), 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) [2022-11-02 21:09:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2687 transitions. [2022-11-02 21:09:51,145 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2687 transitions. Word has length 58 [2022-11-02 21:09:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:51,145 INFO L495 AbstractCegarLoop]: Abstraction has 2033 states and 2687 transitions. [2022-11-02 21:09:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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) [2022-11-02 21:09:51,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2687 transitions. [2022-11-02 21:09:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:09:51,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:51,147 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] [2022-11-02 21:09:51,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:09:51,147 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2022-11-02 21:09:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:51,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987820272] [2022-11-02 21:09:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:51,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987820272] [2022-11-02 21:09:51,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987820272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:51,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:51,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 21:09:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411120105] [2022-11-02 21:09:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:09:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:09:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:09:51,711 INFO L87 Difference]: Start difference. First operand 2033 states and 2687 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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) [2022-11-02 21:09:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:54,161 INFO L93 Difference]: Finished difference Result 4270 states and 5745 transitions. [2022-11-02 21:09:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:09:54,162 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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 58 [2022-11-02 21:09:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:54,170 INFO L225 Difference]: With dead ends: 4270 [2022-11-02 21:09:54,170 INFO L226 Difference]: Without dead ends: 4206 [2022-11-02 21:09:54,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:09:54,176 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2106 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:54,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 3245 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2022-11-02 21:09:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 2018. [2022-11-02 21:09:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2016 states have (on average 1.3239087301587302) internal successors, (2669), 2017 states have internal predecessors, (2669), 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) [2022-11-02 21:09:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2669 transitions. [2022-11-02 21:09:54,738 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2669 transitions. Word has length 58 [2022-11-02 21:09:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:54,738 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2669 transitions. [2022-11-02 21:09:54,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 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) [2022-11-02 21:09:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2669 transitions. [2022-11-02 21:09:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:09:54,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:54,741 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] [2022-11-02 21:09:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:09:54,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1779959307, now seen corresponding path program 1 times [2022-11-02 21:09:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:54,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836303211] [2022-11-02 21:09:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836303211] [2022-11-02 21:09:55,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836303211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:55,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:55,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 21:09:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690713888] [2022-11-02 21:09:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:09:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:09:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:55,255 INFO L87 Difference]: Start difference. First operand 2018 states and 2669 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2022-11-02 21:09:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:58,038 INFO L93 Difference]: Finished difference Result 4412 states and 5918 transitions. [2022-11-02 21:09:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:09:58,039 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 58 [2022-11-02 21:09:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:58,043 INFO L225 Difference]: With dead ends: 4412 [2022-11-02 21:09:58,043 INFO L226 Difference]: Without dead ends: 4198 [2022-11-02 21:09:58,044 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 [2022-11-02 21:09:58,045 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 3535 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:58,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3535 Valid, 2221 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:09:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-11-02 21:09:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 1967. [2022-11-02 21:09:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 1.3260427263479146) internal successors, (2607), 1966 states have internal predecessors, (2607), 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) [2022-11-02 21:09:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2607 transitions. [2022-11-02 21:09:58,571 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2607 transitions. Word has length 58 [2022-11-02 21:09:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:58,571 INFO L495 AbstractCegarLoop]: Abstraction has 1967 states and 2607 transitions. [2022-11-02 21:09:58,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2022-11-02 21:09:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2607 transitions. [2022-11-02 21:09:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:09:58,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:58,575 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] [2022-11-02 21:09:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:09:58,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 21:09:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 590074057, now seen corresponding path program 1 times [2022-11-02 21:09:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:58,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78112545] [2022-11-02 21:09:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:58,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78112545] [2022-11-02 21:09:58,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78112545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:58,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:58,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:09:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657848887] [2022-11-02 21:09:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:58,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:58,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:58,684 INFO L87 Difference]: Start difference. First operand 1967 states and 2607 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2022-11-02 21:09:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:59,896 INFO L93 Difference]: Finished difference Result 4481 states and 6118 transitions. [2022-11-02 21:09:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 [2022-11-02 21:09:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:59,900 INFO L225 Difference]: With dead ends: 4481 [2022-11-02 21:09:59,900 INFO L226 Difference]: Without dead ends: 3327 [2022-11-02 21:09:59,901 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 [2022-11-02 21:09:59,902 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1187 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:59,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 874 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:09:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-11-02 21:10:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 2952. [2022-11-02 21:10:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2951 states have (on average 1.3297187394103693) internal successors, (3924), 2951 states have internal predecessors, (3924), 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) [2022-11-02 21:10:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 3924 transitions. [2022-11-02 21:10:00,782 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 3924 transitions. Word has length 68 [2022-11-02 21:10:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:00,782 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 3924 transitions. [2022-11-02 21:10:00,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2022-11-02 21:10:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 3924 transitions. [2022-11-02 21:10:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 21:10:00,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:00,787 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] [2022-11-02 21:10:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:10:00,787 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)] === [2022-11-02 21:10:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510355, now seen corresponding path program 1 times [2022-11-02 21:10:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:00,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053894894] [2022-11-02 21:10:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:00,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053894894] [2022-11-02 21:10:00,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053894894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:00,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:00,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:10:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723627802] [2022-11-02 21:10:00,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:00,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:00,928 INFO L87 Difference]: Start difference. First operand 2952 states and 3924 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-02 21:10:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:02,119 INFO L93 Difference]: Finished difference Result 2958 states and 3927 transitions. [2022-11-02 21:10:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:10:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2022-11-02 21:10:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:02,122 INFO L225 Difference]: With dead ends: 2958 [2022-11-02 21:10:02,122 INFO L226 Difference]: Without dead ends: 2459 [2022-11-02 21:10:02,123 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 [2022-11-02 21:10:02,124 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 696 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:02,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 994 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2022-11-02 21:10:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2455. [2022-11-02 21:10:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2454 states have (on average 1.3333333333333333) internal successors, (3272), 2454 states have internal predecessors, (3272), 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) [2022-11-02 21:10:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3272 transitions. [2022-11-02 21:10:03,397 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3272 transitions. Word has length 69 [2022-11-02 21:10:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:03,398 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3272 transitions. [2022-11-02 21:10:03,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-02 21:10:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3272 transitions. [2022-11-02 21:10:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:10:03,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:03,402 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] [2022-11-02 21:10:03,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:10:03,403 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)] === [2022-11-02 21:10:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash -533504505, now seen corresponding path program 1 times [2022-11-02 21:10:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:03,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034507100] [2022-11-02 21:10:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034507100] [2022-11-02 21:10:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034507100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:03,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752870294] [2022-11-02 21:10:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:03,510 INFO L87 Difference]: Start difference. First operand 2455 states and 3272 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) [2022-11-02 21:10:05,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:05,471 INFO L93 Difference]: Finished difference Result 5657 states and 7666 transitions. [2022-11-02 21:10:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:05,474 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 [2022-11-02 21:10:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:05,477 INFO L225 Difference]: With dead ends: 5657 [2022-11-02 21:10:05,477 INFO L226 Difference]: Without dead ends: 3861 [2022-11-02 21:10:05,479 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 [2022-11-02 21:10:05,480 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 137 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:05,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 631 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-11-02 21:10:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3651. [2022-11-02 21:10:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3650 states have (on average 1.330958904109589) internal successors, (4858), 3650 states have internal predecessors, (4858), 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) [2022-11-02 21:10:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4858 transitions. [2022-11-02 21:10:07,607 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4858 transitions. Word has length 70 [2022-11-02 21:10:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:07,607 INFO L495 AbstractCegarLoop]: Abstraction has 3651 states and 4858 transitions. [2022-11-02 21:10:07,607 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) [2022-11-02 21:10:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4858 transitions. [2022-11-02 21:10:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:10:07,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:07,611 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] [2022-11-02 21:10:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 21:10:07,612 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)] === [2022-11-02 21:10:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1110878122, now seen corresponding path program 1 times [2022-11-02 21:10:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721198445] [2022-11-02 21:10:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:07,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721198445] [2022-11-02 21:10:07,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721198445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:07,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:07,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022645626] [2022-11-02 21:10:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:07,710 INFO L87 Difference]: Start difference. First operand 3651 states and 4858 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-11-02 21:10:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:11,532 INFO L93 Difference]: Finished difference Result 9303 states and 12576 transitions. [2022-11-02 21:10:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-11-02 21:10:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:11,540 INFO L225 Difference]: With dead ends: 9303 [2022-11-02 21:10:11,540 INFO L226 Difference]: Without dead ends: 6337 [2022-11-02 21:10:11,543 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 [2022-11-02 21:10:11,544 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 118 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:11,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 625 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2022-11-02 21:10:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 5839. [2022-11-02 21:10:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5839 states, 5838 states have (on average 1.3350462487153134) internal successors, (7794), 5838 states have internal predecessors, (7794), 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) [2022-11-02 21:10:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 7794 transitions. [2022-11-02 21:10:14,999 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 7794 transitions. Word has length 71 [2022-11-02 21:10:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,000 INFO L495 AbstractCegarLoop]: Abstraction has 5839 states and 7794 transitions. [2022-11-02 21:10:15,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-11-02 21:10:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 7794 transitions. [2022-11-02 21:10:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:10:15,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,004 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] [2022-11-02 21:10:15,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 21:10:15,004 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)] === [2022-11-02 21:10:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -396168239, now seen corresponding path program 1 times [2022-11-02 21:10:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58184583] [2022-11-02 21:10:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58184583] [2022-11-02 21:10:15,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58184583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:15,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:15,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724913753] [2022-11-02 21:10:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:15,160 INFO L87 Difference]: Start difference. First operand 5839 states and 7794 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) [2022-11-02 21:10:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:21,371 INFO L93 Difference]: Finished difference Result 15587 states and 20956 transitions. [2022-11-02 21:10:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:21,372 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 [2022-11-02 21:10:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:21,385 INFO L225 Difference]: With dead ends: 15587 [2022-11-02 21:10:21,385 INFO L226 Difference]: Without dead ends: 10433 [2022-11-02 21:10:21,391 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 [2022-11-02 21:10:21,392 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 100 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:21,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 610 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10433 states. [2022-11-02 21:10:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10433 to 9439. [2022-11-02 21:10:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9438 states have (on average 1.3276117821572366) internal successors, (12530), 9438 states have internal predecessors, (12530), 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) [2022-11-02 21:10:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 12530 transitions. [2022-11-02 21:10:27,155 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 12530 transitions. Word has length 73 [2022-11-02 21:10:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:27,156 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 12530 transitions. [2022-11-02 21:10:27,156 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) [2022-11-02 21:10:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 12530 transitions. [2022-11-02 21:10:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 21:10:27,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:27,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:27,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 21:10:27,160 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)] === [2022-11-02 21:10:27,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1606128063, now seen corresponding path program 1 times [2022-11-02 21:10:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:27,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59404373] [2022-11-02 21:10:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:27,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:27,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59404373] [2022-11-02 21:10:27,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59404373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:27,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:27,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920963274] [2022-11-02 21:10:27,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:27,407 INFO L87 Difference]: Start difference. First operand 9439 states and 12530 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:38,222 INFO L93 Difference]: Finished difference Result 20177 states and 26441 transitions. [2022-11-02 21:10:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:10:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-02 21:10:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:38,246 INFO L225 Difference]: With dead ends: 20177 [2022-11-02 21:10:38,247 INFO L226 Difference]: Without dead ends: 20175 [2022-11-02 21:10:38,250 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 [2022-11-02 21:10:38,250 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 364 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:38,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1500 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20175 states. [2022-11-02 21:10:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20175 to 10351. [2022-11-02 21:10:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10351 states, 10350 states have (on average 1.298743961352657) internal successors, (13442), 10350 states have internal predecessors, (13442), 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) [2022-11-02 21:10:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10351 states to 10351 states and 13442 transitions. [2022-11-02 21:10:43,758 INFO L78 Accepts]: Start accepts. Automaton has 10351 states and 13442 transitions. Word has length 75 [2022-11-02 21:10:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:43,758 INFO L495 AbstractCegarLoop]: Abstraction has 10351 states and 13442 transitions. [2022-11-02 21:10:43,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 10351 states and 13442 transitions. [2022-11-02 21:10:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:10:43,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:43,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 21:10:43,761 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)] === [2022-11-02 21:10:43,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 824153179, now seen corresponding path program 1 times [2022-11-02 21:10:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:43,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147126453] [2022-11-02 21:10:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:43,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147126453] [2022-11-02 21:10:43,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147126453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:43,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:43,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568724353] [2022-11-02 21:10:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:43,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:10:43,817 INFO L87 Difference]: Start difference. First operand 10351 states and 13442 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:52,216 INFO L93 Difference]: Finished difference Result 24911 states and 32360 transitions. [2022-11-02 21:10:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-02 21:10:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:52,236 INFO L225 Difference]: With dead ends: 24911 [2022-11-02 21:10:52,236 INFO L226 Difference]: Without dead ends: 15245 [2022-11-02 21:10:52,248 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 [2022-11-02 21:10:52,248 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 223 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:52,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 459 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-11-02 21:11:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 15243. [2022-11-02 21:11:01,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15243 states, 15242 states have (on average 1.2826400734811705) internal successors, (19550), 15242 states have internal predecessors, (19550), 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) [2022-11-02 21:11:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 19550 transitions. [2022-11-02 21:11:01,455 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 19550 transitions. Word has length 76 [2022-11-02 21:11:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:01,456 INFO L495 AbstractCegarLoop]: Abstraction has 15243 states and 19550 transitions. [2022-11-02 21:11:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 19550 transitions. [2022-11-02 21:11:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:11:01,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:01,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 21:11:01,460 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)] === [2022-11-02 21:11:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1756244585, now seen corresponding path program 1 times [2022-11-02 21:11:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:01,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127276862] [2022-11-02 21:11:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127276862] [2022-11-02 21:11:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127276862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:01,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:01,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754974972] [2022-11-02 21:11:01,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:01,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:01,580 INFO L87 Difference]: Start difference. First operand 15243 states and 19550 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:12,148 INFO L93 Difference]: Finished difference Result 22049 states and 28430 transitions. [2022-11-02 21:11:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 21:11:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:12,175 INFO L225 Difference]: With dead ends: 22049 [2022-11-02 21:11:12,175 INFO L226 Difference]: Without dead ends: 18429 [2022-11-02 21:11:12,182 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 [2022-11-02 21:11:12,183 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 695 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 978 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:11:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18429 states. [2022-11-02 21:11:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18429 to 17181. [2022-11-02 21:11:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17181 states, 17180 states have (on average 1.278812572759022) internal successors, (21970), 17180 states have internal predecessors, (21970), 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) [2022-11-02 21:11:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 21970 transitions. [2022-11-02 21:11:22,002 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 21970 transitions. Word has length 77 [2022-11-02 21:11:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:22,002 INFO L495 AbstractCegarLoop]: Abstraction has 17181 states and 21970 transitions. [2022-11-02 21:11:22,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 21970 transitions. [2022-11-02 21:11:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:11:22,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:22,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 21:11:22,005 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)] === [2022-11-02 21:11:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -51175098, now seen corresponding path program 1 times [2022-11-02 21:11:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:22,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340830977] [2022-11-02 21:11:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:22,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:22,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340830977] [2022-11-02 21:11:22,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340830977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:22,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834931838] [2022-11-02 21:11:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:22,071 INFO L87 Difference]: Start difference. First operand 17181 states and 21970 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:34,715 INFO L93 Difference]: Finished difference Result 33786 states and 43238 transitions. [2022-11-02 21:11:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:34,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-02 21:11:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:34,756 INFO L225 Difference]: With dead ends: 33786 [2022-11-02 21:11:34,756 INFO L226 Difference]: Without dead ends: 25841 [2022-11-02 21:11:34,767 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 [2022-11-02 21:11:34,768 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 225 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:34,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 360 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25841 states. [2022-11-02 21:11:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25841 to 16830. [2022-11-02 21:11:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16830 states, 16829 states have (on average 1.2764870164596827) internal successors, (21482), 16829 states have internal predecessors, (21482), 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) [2022-11-02 21:11:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16830 states to 16830 states and 21482 transitions. [2022-11-02 21:11:44,775 INFO L78 Accepts]: Start accepts. Automaton has 16830 states and 21482 transitions. Word has length 80 [2022-11-02 21:11:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:44,776 INFO L495 AbstractCegarLoop]: Abstraction has 16830 states and 21482 transitions. [2022-11-02 21:11:44,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 16830 states and 21482 transitions. [2022-11-02 21:11:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 21:11:44,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:44,781 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, 1, 1] [2022-11-02 21:11:44,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 21:11:44,782 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)] === [2022-11-02 21:11:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1593588101, now seen corresponding path program 1 times [2022-11-02 21:11:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:44,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265311853] [2022-11-02 21:11:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:11:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:45,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265311853] [2022-11-02 21:11:45,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265311853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:45,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:45,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:11:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578384744] [2022-11-02 21:11:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:11:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:11:45,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:45,080 INFO L87 Difference]: Start difference. First operand 16830 states and 21482 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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) [2022-11-02 21:12:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:05,478 INFO L93 Difference]: Finished difference Result 44945 states and 57203 transitions. [2022-11-02 21:12:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:12:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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 95 [2022-11-02 21:12:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:05,539 INFO L225 Difference]: With dead ends: 44945 [2022-11-02 21:12:05,539 INFO L226 Difference]: Without dead ends: 36729 [2022-11-02 21:12:05,553 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 [2022-11-02 21:12:05,554 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1384 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:05,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1363 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:12:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36729 states. [2022-11-02 21:12:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36729 to 16764. [2022-11-02 21:12:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 1.2768597506412933) internal successors, (21404), 16763 states have internal predecessors, (21404), 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) [2022-11-02 21:12:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 21404 transitions. [2022-11-02 21:12:13,804 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 21404 transitions. Word has length 95 [2022-11-02 21:12:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:13,804 INFO L495 AbstractCegarLoop]: Abstraction has 16764 states and 21404 transitions. [2022-11-02 21:12:13,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 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) [2022-11-02 21:12:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 21404 transitions. [2022-11-02 21:12:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 21:12:13,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:13,809 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, 1, 1] [2022-11-02 21:12:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 21:12:13,809 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)] === [2022-11-02 21:12:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash 670186457, now seen corresponding path program 1 times [2022-11-02 21:12:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:13,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373909423] [2022-11-02 21:12:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373909423] [2022-11-02 21:12:14,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373909423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822589947] [2022-11-02 21:12:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:14,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:14,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:14,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca3d956-d2f0-4aea-ada9-44452d313181/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:12:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:14,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:15,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:16,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822589947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:16,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:16,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2022-11-02 21:12:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232151262] [2022-11-02 21:12:16,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:16,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:12:16,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:16,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:12:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:12:16,156 INFO L87 Difference]: Start difference. First operand 16764 states and 21404 transitions. Second operand has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 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)