./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a --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 7f3df0b4eae1d513bdc1ba52a53496aa05ff593bd28211e99c6fbfee672a86c9 --- 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-b5237d8 [2022-11-21 13:55:38,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:55:38,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:55:38,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:55:38,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:55:38,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:55:38,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:55:38,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:55:38,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:55:38,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:55:38,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:55:38,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:55:38,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:55:38,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:55:38,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:55:38,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:55:38,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:55:38,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:55:38,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:55:38,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:55:38,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:55:38,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:55:38,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:55:38,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:55:38,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:55:38,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:55:38,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:55:38,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:55:38,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:55:38,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:55:38,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:55:38,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:55:38,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:55:38,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:55:38,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:55:38,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:55:38,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:55:38,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:55:38,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:55:38,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:55:38,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:55:38,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:55:38,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:55:38,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:55:38,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:55:38,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:55:38,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:55:38,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:55:38,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:55:38,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:55:38,647 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:55:38,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:55:38,648 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:55:38,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:55:38,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:55:38,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:55:38,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:55:38,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:55:38,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:55:38,650 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:55:38,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:55:38,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:55:38,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:55:38,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:55:38,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:55:38,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:55:38,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:38,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:55:38,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:55:38,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:55:38,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:55:38,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:55:38,654 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:55:38,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:55:38,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:55:38,655 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_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f3df0b4eae1d513bdc1ba52a53496aa05ff593bd28211e99c6fbfee672a86c9 [2022-11-21 13:55:39,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:55:39,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:55:39,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:55:39,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:55:39,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:55:39,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-21 13:55:42,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:55:42,382 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:55:42,394 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-21 13:55:42,412 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/data/17d12d3f9/6610326747ab42bfbbc216e7cf2e4d43/FLAG18718dea6 [2022-11-21 13:55:42,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/data/17d12d3f9/6610326747ab42bfbbc216e7cf2e4d43 [2022-11-21 13:55:42,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:55:42,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:55:42,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:42,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:55:42,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:55:42,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:42" (1/1) ... [2022-11-21 13:55:42,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f4182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:42, skipping insertion in model container [2022-11-21 13:55:42,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:42" (1/1) ... [2022-11-21 13:55:42,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:55:42,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:55:42,798 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5819,5832] [2022-11-21 13:55:42,835 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8492,8505] [2022-11-21 13:55:42,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11299,11312] [2022-11-21 13:55:42,871 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13874,13887] [2022-11-21 13:55:42,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16880,16893] [2022-11-21 13:55:42,902 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19470,19483] [2022-11-21 13:55:42,921 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22230,22243] [2022-11-21 13:55:42,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:42,984 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:55:43,038 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5819,5832] [2022-11-21 13:55:43,054 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8492,8505] [2022-11-21 13:55:43,071 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11299,11312] [2022-11-21 13:55:43,086 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13874,13887] [2022-11-21 13:55:43,104 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16880,16893] [2022-11-21 13:55:43,119 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19470,19483] [2022-11-21 13:55:43,134 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22230,22243] [2022-11-21 13:55:43,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:43,193 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:55:43,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43 WrapperNode [2022-11-21 13:55:43,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:43,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:43,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:55:43,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:55:43,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,322 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1247 [2022-11-21 13:55:43,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:43,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:55:43,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:55:43,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:55:43,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:55:43,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:55:43,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:55:43,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:55:43,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (1/1) ... [2022-11-21 13:55:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:43,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:43,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:55:43,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:55:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:55:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:55:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:55:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:55:43,799 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:55:43,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:55:44,874 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:55:44,896 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:55:44,896 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:55:44,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:44 BoogieIcfgContainer [2022-11-21 13:55:44,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:55:44,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:55:44,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:55:44,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:55:44,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:55:42" (1/3) ... [2022-11-21 13:55:44,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef1a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:44, skipping insertion in model container [2022-11-21 13:55:44,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:43" (2/3) ... [2022-11-21 13:55:44,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef1a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:44, skipping insertion in model container [2022-11-21 13:55:44,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:44" (3/3) ... [2022-11-21 13:55:44,916 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-21 13:55:44,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:55:44,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-21 13:55:45,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:55:45,035 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;@7f05eea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:55:45,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 13:55:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 13:55:45,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:45,051 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] [2022-11-21 13:55:45,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash -102713619, now seen corresponding path program 1 times [2022-11-21 13:55:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:45,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259370866] [2022-11-21 13:55:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:45,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259370866] [2022-11-21 13:55:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259370866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:45,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:45,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:55:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919578676] [2022-11-21 13:55:45,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:45,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:55:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:55:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:55:45,795 INFO L87 Difference]: Start difference. First operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:46,116 INFO L93 Difference]: Finished difference Result 343 states and 586 transitions. [2022-11-21 13:55:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:55:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-21 13:55:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:46,133 INFO L225 Difference]: With dead ends: 343 [2022-11-21 13:55:46,133 INFO L226 Difference]: Without dead ends: 193 [2022-11-21 13:55:46,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:46,142 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 934 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:46,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 249 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:55:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-21 13:55:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-11-21 13:55:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.2795698924731183) internal successors, (238), 192 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2022-11-21 13:55:46,215 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 47 [2022-11-21 13:55:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:46,216 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2022-11-21 13:55:46,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2022-11-21 13:55:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 13:55:46,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:46,218 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] [2022-11-21 13:55:46,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:55:46,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1933719334, now seen corresponding path program 1 times [2022-11-21 13:55:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:46,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545877100] [2022-11-21 13:55:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:46,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:46,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545877100] [2022-11-21 13:55:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545877100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:46,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:46,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:55:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590697958] [2022-11-21 13:55:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:46,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:55:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:46,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:55:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:55:46,394 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:46,566 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2022-11-21 13:55:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:55:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-21 13:55:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:46,568 INFO L225 Difference]: With dead ends: 279 [2022-11-21 13:55:46,568 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 13:55:46,569 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 [2022-11-21 13:55:46,570 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 602 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:46,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 139 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 13:55:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-21 13:55:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 176 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 219 transitions. [2022-11-21 13:55:46,593 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 219 transitions. Word has length 47 [2022-11-21 13:55:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:46,595 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 219 transitions. [2022-11-21 13:55:46,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 219 transitions. [2022-11-21 13:55:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 13:55:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:46,605 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] [2022-11-21 13:55:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:55:46,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 458596476, now seen corresponding path program 1 times [2022-11-21 13:55:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910816436] [2022-11-21 13:55:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:46,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910816436] [2022-11-21 13:55:46,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910816436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:46,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:46,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:55:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421799898] [2022-11-21 13:55:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:46,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:55:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:55:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:55:46,759 INFO L87 Difference]: Start difference. First operand 177 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:46,951 INFO L93 Difference]: Finished difference Result 339 states and 435 transitions. [2022-11-21 13:55:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:55:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-21 13:55:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:46,955 INFO L225 Difference]: With dead ends: 339 [2022-11-21 13:55:46,955 INFO L226 Difference]: Without dead ends: 239 [2022-11-21 13:55:46,958 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 [2022-11-21 13:55:46,959 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 768 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:46,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 190 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-21 13:55:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 215. [2022-11-21 13:55:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3509615384615385) internal successors, (281), 214 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2022-11-21 13:55:46,984 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 47 [2022-11-21 13:55:46,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:46,984 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2022-11-21 13:55:46,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2022-11-21 13:55:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-21 13:55:46,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:46,986 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] [2022-11-21 13:55:46,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:55:46,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1498085814, now seen corresponding path program 1 times [2022-11-21 13:55:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:46,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646494069] [2022-11-21 13:55:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646494069] [2022-11-21 13:55:47,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646494069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:47,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:47,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:55:47,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625177042] [2022-11-21 13:55:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:47,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:55:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:55:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:55:47,370 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:48,139 INFO L93 Difference]: Finished difference Result 530 states and 734 transitions. [2022-11-21 13:55:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:55:48,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-21 13:55:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:48,144 INFO L225 Difference]: With dead ends: 530 [2022-11-21 13:55:48,145 INFO L226 Difference]: Without dead ends: 525 [2022-11-21 13:55:48,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:55:48,154 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1250 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:48,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 613 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:55:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-21 13:55:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 215. [2022-11-21 13:55:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3461538461538463) internal successors, (280), 214 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 280 transitions. [2022-11-21 13:55:48,197 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 280 transitions. Word has length 48 [2022-11-21 13:55:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:48,198 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 280 transitions. [2022-11-21 13:55:48,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 280 transitions. [2022-11-21 13:55:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-21 13:55:48,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:48,199 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] [2022-11-21 13:55:48,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:55:48,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash 267052195, now seen corresponding path program 1 times [2022-11-21 13:55:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:48,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376818039] [2022-11-21 13:55:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376818039] [2022-11-21 13:55:48,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376818039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:48,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:48,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:55:48,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063858341] [2022-11-21 13:55:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:48,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:55:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:55:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:55:48,599 INFO L87 Difference]: Start difference. First operand 215 states and 280 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:49,329 INFO L93 Difference]: Finished difference Result 534 states and 737 transitions. [2022-11-21 13:55:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:55:49,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-21 13:55:49,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:49,332 INFO L225 Difference]: With dead ends: 534 [2022-11-21 13:55:49,336 INFO L226 Difference]: Without dead ends: 433 [2022-11-21 13:55:49,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:55:49,341 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1052 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:49,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 818 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:55:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-21 13:55:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 215. [2022-11-21 13:55:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3413461538461537) internal successors, (279), 214 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2022-11-21 13:55:49,399 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 48 [2022-11-21 13:55:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:49,399 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2022-11-21 13:55:49,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2022-11-21 13:55:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-21 13:55:49,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:49,401 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] [2022-11-21 13:55:49,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:55:49,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1788008380, now seen corresponding path program 1 times [2022-11-21 13:55:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40790534] [2022-11-21 13:55:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:49,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:49,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40790534] [2022-11-21 13:55:49,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40790534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:49,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:49,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:55:49,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301353448] [2022-11-21 13:55:49,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:49,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:55:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:55:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:55:49,731 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:50,114 INFO L93 Difference]: Finished difference Result 459 states and 614 transitions. [2022-11-21 13:55:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:55:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-21 13:55:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:50,118 INFO L225 Difference]: With dead ends: 459 [2022-11-21 13:55:50,119 INFO L226 Difference]: Without dead ends: 335 [2022-11-21 13:55:50,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:55:50,121 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1207 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:50,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 302 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:55:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-21 13:55:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2022-11-21 13:55:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3365384615384615) internal successors, (278), 214 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 278 transitions. [2022-11-21 13:55:50,162 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 278 transitions. Word has length 48 [2022-11-21 13:55:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:50,163 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 278 transitions. [2022-11-21 13:55:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 278 transitions. [2022-11-21 13:55:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 13:55:50,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:50,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:55:50,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1932349207, now seen corresponding path program 1 times [2022-11-21 13:55:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:50,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074019256] [2022-11-21 13:55:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:51,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074019256] [2022-11-21 13:55:51,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074019256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:51,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:51,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 13:55:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963790837] [2022-11-21 13:55:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:55:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:55:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:55:51,379 INFO L87 Difference]: Start difference. First operand 215 states and 278 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:53,573 INFO L93 Difference]: Finished difference Result 403 states and 529 transitions. [2022-11-21 13:55:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:55:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-21 13:55:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:53,576 INFO L225 Difference]: With dead ends: 403 [2022-11-21 13:55:53,576 INFO L226 Difference]: Without dead ends: 399 [2022-11-21 13:55:53,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:55:53,578 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1035 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:53,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2350 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:55:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-21 13:55:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 219. [2022-11-21 13:55:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 212 states have (on average 1.3396226415094339) internal successors, (284), 218 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 284 transitions. [2022-11-21 13:55:53,623 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 284 transitions. Word has length 50 [2022-11-21 13:55:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:53,623 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 284 transitions. [2022-11-21 13:55:53,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 284 transitions. [2022-11-21 13:55:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 13:55:53,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:53,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:53,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:55:53,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1779763646, now seen corresponding path program 1 times [2022-11-21 13:55:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:53,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654009635] [2022-11-21 13:55:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:54,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654009635] [2022-11-21 13:55:54,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654009635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:54,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:54,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 13:55:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895751792] [2022-11-21 13:55:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:54,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:55:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:54,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:55:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:55:54,745 INFO L87 Difference]: Start difference. First operand 219 states and 284 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:56,843 INFO L93 Difference]: Finished difference Result 472 states and 643 transitions. [2022-11-21 13:55:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 13:55:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-21 13:55:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:56,845 INFO L225 Difference]: With dead ends: 472 [2022-11-21 13:55:56,846 INFO L226 Difference]: Without dead ends: 384 [2022-11-21 13:55:56,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 13:55:56,847 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 971 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:56,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2085 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 13:55:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-21 13:55:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 225. [2022-11-21 13:55:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.3394495412844036) internal successors, (292), 224 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2022-11-21 13:55:56,888 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 50 [2022-11-21 13:55:56,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:56,888 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2022-11-21 13:55:56,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:55:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2022-11-21 13:55:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 13:55:56,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:56,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:56,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:55:56,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:55:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1793833253, now seen corresponding path program 1 times [2022-11-21 13:55:56,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:56,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241262100] [2022-11-21 13:55:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241262100] [2022-11-21 13:55:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241262100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:57,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:57,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 13:55:57,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460450315] [2022-11-21 13:55:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:55:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:55:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:55:57,877 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:00,287 INFO L93 Difference]: Finished difference Result 589 states and 823 transitions. [2022-11-21 13:56:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 13:56:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-21 13:56:00,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:00,290 INFO L225 Difference]: With dead ends: 589 [2022-11-21 13:56:00,291 INFO L226 Difference]: Without dead ends: 583 [2022-11-21 13:56:00,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 13:56:00,292 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1958 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:00,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 2156 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:56:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-21 13:56:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 225. [2022-11-21 13:56:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.334862385321101) internal successors, (291), 224 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 291 transitions. [2022-11-21 13:56:00,339 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 291 transitions. Word has length 50 [2022-11-21 13:56:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 291 transitions. [2022-11-21 13:56:00,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 291 transitions. [2022-11-21 13:56:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 13:56:00,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:00,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:00,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:56:00,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:00,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1827600366, now seen corresponding path program 1 times [2022-11-21 13:56:00,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:00,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981058510] [2022-11-21 13:56:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:00,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981058510] [2022-11-21 13:56:00,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981058510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:00,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:00,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:56:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558510383] [2022-11-21 13:56:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:56:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:56:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:56:00,993 INFO L87 Difference]: Start difference. First operand 225 states and 291 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:01,888 INFO L93 Difference]: Finished difference Result 444 states and 618 transitions. [2022-11-21 13:56:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:56:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-21 13:56:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:01,891 INFO L225 Difference]: With dead ends: 444 [2022-11-21 13:56:01,891 INFO L226 Difference]: Without dead ends: 349 [2022-11-21 13:56:01,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:56:01,893 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 998 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:01,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1047 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:56:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-21 13:56:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 214. [2022-11-21 13:56:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3413461538461537) internal successors, (279), 213 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 279 transitions. [2022-11-21 13:56:01,947 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 279 transitions. Word has length 50 [2022-11-21 13:56:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:01,947 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 279 transitions. [2022-11-21 13:56:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 279 transitions. [2022-11-21 13:56:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:56:01,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:01,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:01,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:56:01,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash -767196360, now seen corresponding path program 1 times [2022-11-21 13:56:01,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:01,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648221937] [2022-11-21 13:56:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:01,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:02,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648221937] [2022-11-21 13:56:02,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648221937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:02,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:02,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:56:02,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505894109] [2022-11-21 13:56:02,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:02,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:56:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:56:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:02,237 INFO L87 Difference]: Start difference. First operand 214 states and 279 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2022-11-21 13:56:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:02,738 INFO L93 Difference]: Finished difference Result 349 states and 461 transitions. [2022-11-21 13:56:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 [2022-11-21 13:56:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:02,742 INFO L225 Difference]: With dead ends: 349 [2022-11-21 13:56:02,742 INFO L226 Difference]: Without dead ends: 342 [2022-11-21 13:56:02,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:56:02,743 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 982 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:02,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 471 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:56:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-21 13:56:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 214. [2022-11-21 13:56:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3317307692307692) internal successors, (277), 213 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 277 transitions. [2022-11-21 13:56:02,795 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 277 transitions. Word has length 51 [2022-11-21 13:56:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:02,795 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 277 transitions. [2022-11-21 13:56:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2022-11-21 13:56:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 277 transitions. [2022-11-21 13:56:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:56:02,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:02,797 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] [2022-11-21 13:56:02,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:56:02,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1195663953, now seen corresponding path program 1 times [2022-11-21 13:56:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:02,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924016713] [2022-11-21 13:56:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:03,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924016713] [2022-11-21 13:56:03,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924016713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:03,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:03,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 13:56:03,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138570085] [2022-11-21 13:56:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:03,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:56:03,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:56:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:03,173 INFO L87 Difference]: Start difference. First operand 214 states and 277 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-11-21 13:56:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:04,117 INFO L93 Difference]: Finished difference Result 547 states and 759 transitions. [2022-11-21 13:56:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:56:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 [2022-11-21 13:56:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:04,120 INFO L225 Difference]: With dead ends: 547 [2022-11-21 13:56:04,121 INFO L226 Difference]: Without dead ends: 433 [2022-11-21 13:56:04,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:56:04,122 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1313 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:04,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 752 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:56:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-21 13:56:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 214. [2022-11-21 13:56:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3221153846153846) internal successors, (275), 213 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 275 transitions. [2022-11-21 13:56:04,177 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 275 transitions. Word has length 51 [2022-11-21 13:56:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:04,177 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 275 transitions. [2022-11-21 13:56:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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) [2022-11-21 13:56:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 275 transitions. [2022-11-21 13:56:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:56:04,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:04,178 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] [2022-11-21 13:56:04,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:56:04,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 72941877, now seen corresponding path program 1 times [2022-11-21 13:56:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:04,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24485061] [2022-11-21 13:56:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:04,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24485061] [2022-11-21 13:56:04,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24485061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:04,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:04,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:56:04,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576620163] [2022-11-21 13:56:04,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:04,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:56:04,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:56:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:56:04,699 INFO L87 Difference]: Start difference. First operand 214 states and 275 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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) [2022-11-21 13:56:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:05,396 INFO L93 Difference]: Finished difference Result 457 states and 632 transitions. [2022-11-21 13:56:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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 [2022-11-21 13:56:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:05,399 INFO L225 Difference]: With dead ends: 457 [2022-11-21 13:56:05,399 INFO L226 Difference]: Without dead ends: 437 [2022-11-21 13:56:05,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:56:05,401 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 873 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:05,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1477 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:56:05,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-21 13:56:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 194. [2022-11-21 13:56:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.3263157894736841) internal successors, (252), 193 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 252 transitions. [2022-11-21 13:56:05,448 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 252 transitions. Word has length 51 [2022-11-21 13:56:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:05,448 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 252 transitions. [2022-11-21 13:56:05,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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) [2022-11-21 13:56:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 252 transitions. [2022-11-21 13:56:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:56:05,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:05,449 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] [2022-11-21 13:56:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:56:05,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -314877430, now seen corresponding path program 1 times [2022-11-21 13:56:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:05,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158073524] [2022-11-21 13:56:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:05,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158073524] [2022-11-21 13:56:05,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158073524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:05,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:05,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:56:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308499184] [2022-11-21 13:56:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:56:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:56:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:56:05,958 INFO L87 Difference]: Start difference. First operand 194 states and 252 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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) [2022-11-21 13:56:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:07,803 INFO L93 Difference]: Finished difference Result 980 states and 1396 transitions. [2022-11-21 13:56:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:56:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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 [2022-11-21 13:56:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:07,807 INFO L225 Difference]: With dead ends: 980 [2022-11-21 13:56:07,807 INFO L226 Difference]: Without dead ends: 973 [2022-11-21 13:56:07,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 13:56:07,809 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1966 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:07,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 771 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:56:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-11-21 13:56:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 194. [2022-11-21 13:56:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.3210526315789475) internal successors, (251), 193 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2022-11-21 13:56:07,876 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 51 [2022-11-21 13:56:07,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:07,876 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2022-11-21 13:56:07,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 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) [2022-11-21 13:56:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2022-11-21 13:56:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:56:07,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:07,878 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] [2022-11-21 13:56:07,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:56:07,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:07,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:07,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1266894549, now seen corresponding path program 1 times [2022-11-21 13:56:07,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:07,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990324791] [2022-11-21 13:56:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:07,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:08,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990324791] [2022-11-21 13:56:08,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990324791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:08,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:08,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 13:56:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399882295] [2022-11-21 13:56:08,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:08,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:56:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:56:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:56:08,469 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2022-11-21 13:56:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:09,543 INFO L93 Difference]: Finished difference Result 418 states and 565 transitions. [2022-11-21 13:56:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 13:56:09,544 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 [2022-11-21 13:56:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:09,545 INFO L225 Difference]: With dead ends: 418 [2022-11-21 13:56:09,546 INFO L226 Difference]: Without dead ends: 330 [2022-11-21 13:56:09,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2022-11-21 13:56:09,547 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 488 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:09,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1771 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:56:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-21 13:56:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 188. [2022-11-21 13:56:09,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 1.3135135135135134) internal successors, (243), 187 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 243 transitions. [2022-11-21 13:56:09,646 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 243 transitions. Word has length 51 [2022-11-21 13:56:09,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:09,647 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 243 transitions. [2022-11-21 13:56:09,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2022-11-21 13:56:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 243 transitions. [2022-11-21 13:56:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 13:56:09,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:09,648 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] [2022-11-21 13:56:09,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:56:09,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash 966049747, now seen corresponding path program 1 times [2022-11-21 13:56:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:09,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454776060] [2022-11-21 13:56:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:09,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454776060] [2022-11-21 13:56:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454776060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:09,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:56:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962365410] [2022-11-21 13:56:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:56:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:56:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:09,855 INFO L87 Difference]: Start difference. First operand 188 states and 243 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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) [2022-11-21 13:56:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:10,411 INFO L93 Difference]: Finished difference Result 325 states and 428 transitions. [2022-11-21 13:56:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:56:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 [2022-11-21 13:56:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:10,414 INFO L225 Difference]: With dead ends: 325 [2022-11-21 13:56:10,414 INFO L226 Difference]: Without dead ends: 318 [2022-11-21 13:56:10,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:56:10,417 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 477 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:10,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 595 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:56:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-21 13:56:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 184. [2022-11-21 13:56:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.3149171270718232) internal successors, (238), 183 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2022-11-21 13:56:10,481 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 52 [2022-11-21 13:56:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:10,481 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2022-11-21 13:56:10,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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) [2022-11-21 13:56:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2022-11-21 13:56:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 13:56:10,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:10,483 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] [2022-11-21 13:56:10,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:56:10,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1837589620, now seen corresponding path program 1 times [2022-11-21 13:56:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:10,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614449387] [2022-11-21 13:56:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614449387] [2022-11-21 13:56:11,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614449387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:11,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 13:56:11,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139010086] [2022-11-21 13:56:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:11,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:56:11,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:56:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:56:11,244 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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) [2022-11-21 13:56:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:12,695 INFO L93 Difference]: Finished difference Result 400 states and 543 transitions. [2022-11-21 13:56:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:56:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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 [2022-11-21 13:56:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:12,697 INFO L225 Difference]: With dead ends: 400 [2022-11-21 13:56:12,697 INFO L226 Difference]: Without dead ends: 394 [2022-11-21 13:56:12,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 13:56:12,698 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 721 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:12,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2043 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:56:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-21 13:56:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 190. [2022-11-21 13:56:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 187 states have (on average 1.3155080213903743) internal successors, (246), 189 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 246 transitions. [2022-11-21 13:56:12,771 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 246 transitions. Word has length 53 [2022-11-21 13:56:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:12,771 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 246 transitions. [2022-11-21 13:56:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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) [2022-11-21 13:56:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 246 transitions. [2022-11-21 13:56:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 13:56:12,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:12,772 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] [2022-11-21 13:56:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:56:12,773 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 202849221, now seen corresponding path program 1 times [2022-11-21 13:56:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:12,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961373251] [2022-11-21 13:56:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:13,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961373251] [2022-11-21 13:56:13,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961373251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:13,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:13,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:56:13,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566220323] [2022-11-21 13:56:13,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:13,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:56:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:13,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:56:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:13,159 INFO L87 Difference]: Start difference. First operand 190 states and 246 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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) [2022-11-21 13:56:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:14,107 INFO L93 Difference]: Finished difference Result 462 states and 649 transitions. [2022-11-21 13:56:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:56:14,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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 [2022-11-21 13:56:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:14,110 INFO L225 Difference]: With dead ends: 462 [2022-11-21 13:56:14,110 INFO L226 Difference]: Without dead ends: 444 [2022-11-21 13:56:14,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:56:14,111 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 787 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:14,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 877 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:56:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-21 13:56:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 172. [2022-11-21 13:56:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 171 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 226 transitions. [2022-11-21 13:56:14,201 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 226 transitions. Word has length 53 [2022-11-21 13:56:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 226 transitions. [2022-11-21 13:56:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 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) [2022-11-21 13:56:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 226 transitions. [2022-11-21 13:56:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 13:56:14,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:14,202 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] [2022-11-21 13:56:14,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:56:14,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:14,203 INFO L85 PathProgramCache]: Analyzing trace with hash 576756188, now seen corresponding path program 1 times [2022-11-21 13:56:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:14,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056936353] [2022-11-21 13:56:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056936353] [2022-11-21 13:56:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056936353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:14,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:14,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 13:56:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793538924] [2022-11-21 13:56:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:56:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:56:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:56:14,746 INFO L87 Difference]: Start difference. First operand 172 states and 226 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2022-11-21 13:56:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:15,769 INFO L93 Difference]: Finished difference Result 472 states and 661 transitions. [2022-11-21 13:56:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:56:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 [2022-11-21 13:56:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:15,772 INFO L225 Difference]: With dead ends: 472 [2022-11-21 13:56:15,772 INFO L226 Difference]: Without dead ends: 466 [2022-11-21 13:56:15,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:56:15,773 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 379 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:15,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1658 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:56:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-21 13:56:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 160. [2022-11-21 13:56:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3270440251572326) internal successors, (211), 159 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2022-11-21 13:56:15,853 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 54 [2022-11-21 13:56:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:15,853 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2022-11-21 13:56:15,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2022-11-21 13:56:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2022-11-21 13:56:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 13:56:15,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:15,854 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] [2022-11-21 13:56:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:56:15,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash 415256315, now seen corresponding path program 1 times [2022-11-21 13:56:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129439182] [2022-11-21 13:56:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:15,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129439182] [2022-11-21 13:56:15,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129439182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:15,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:15,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759870366] [2022-11-21 13:56:15,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:15,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:15,941 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2022-11-21 13:56:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:16,557 INFO L93 Difference]: Finished difference Result 664 states and 979 transitions. [2022-11-21 13:56:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:56:16,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 [2022-11-21 13:56:16,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:16,560 INFO L225 Difference]: With dead ends: 664 [2022-11-21 13:56:16,560 INFO L226 Difference]: Without dead ends: 580 [2022-11-21 13:56:16,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:16,563 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 492 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:16,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 506 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-11-21 13:56:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 242. [2022-11-21 13:56:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.3858921161825726) internal successors, (334), 241 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2022-11-21 13:56:16,750 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 71 [2022-11-21 13:56:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:16,751 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2022-11-21 13:56:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2022-11-21 13:56:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2022-11-21 13:56:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:56:16,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:16,752 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] [2022-11-21 13:56:16,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:56:16,753 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash -237734748, now seen corresponding path program 1 times [2022-11-21 13:56:16,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:16,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045524640] [2022-11-21 13:56:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:16,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:16,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:16,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045524640] [2022-11-21 13:56:16,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045524640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:16,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:16,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:16,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915350226] [2022-11-21 13:56:16,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:16,861 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2022-11-21 13:56:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:17,525 INFO L93 Difference]: Finished difference Result 824 states and 1211 transitions. [2022-11-21 13:56:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:56:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 [2022-11-21 13:56:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:17,529 INFO L225 Difference]: With dead ends: 824 [2022-11-21 13:56:17,529 INFO L226 Difference]: Without dead ends: 658 [2022-11-21 13:56:17,530 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 [2022-11-21 13:56:17,531 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 292 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:17,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 438 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:17,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-21 13:56:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 406. [2022-11-21 13:56:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.4370370370370371) internal successors, (582), 405 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 582 transitions. [2022-11-21 13:56:17,962 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 582 transitions. Word has length 73 [2022-11-21 13:56:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:17,963 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 582 transitions. [2022-11-21 13:56:17,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2022-11-21 13:56:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 582 transitions. [2022-11-21 13:56:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:56:17,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:17,965 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] [2022-11-21 13:56:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 13:56:17,966 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -871401261, now seen corresponding path program 1 times [2022-11-21 13:56:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980061623] [2022-11-21 13:56:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:17,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:18,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:18,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980061623] [2022-11-21 13:56:18,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980061623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:18,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:18,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914652838] [2022-11-21 13:56:18,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:18,031 INFO L87 Difference]: Start difference. First operand 406 states and 582 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) [2022-11-21 13:56:18,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:18,394 INFO L93 Difference]: Finished difference Result 738 states and 1082 transitions. [2022-11-21 13:56:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:18,395 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 [2022-11-21 13:56:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:18,397 INFO L225 Difference]: With dead ends: 738 [2022-11-21 13:56:18,397 INFO L226 Difference]: Without dead ends: 408 [2022-11-21 13:56:18,398 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 [2022-11-21 13:56:18,398 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 52 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:18,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 201 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-21 13:56:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2022-11-21 13:56:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.4271604938271605) internal successors, (578), 405 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 578 transitions. [2022-11-21 13:56:18,679 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 578 transitions. Word has length 73 [2022-11-21 13:56:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:18,679 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 578 transitions. [2022-11-21 13:56:18,679 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) [2022-11-21 13:56:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 578 transitions. [2022-11-21 13:56:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:56:18,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:18,681 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] [2022-11-21 13:56:18,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 13:56:18,684 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -937894773, now seen corresponding path program 1 times [2022-11-21 13:56:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:18,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044666578] [2022-11-21 13:56:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044666578] [2022-11-21 13:56:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044666578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:18,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:18,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051360699] [2022-11-21 13:56:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:18,736 INFO L87 Difference]: Start difference. First operand 406 states and 578 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) [2022-11-21 13:56:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:19,409 INFO L93 Difference]: Finished difference Result 1014 states and 1480 transitions. [2022-11-21 13:56:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:19,410 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 [2022-11-21 13:56:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:19,412 INFO L225 Difference]: With dead ends: 1014 [2022-11-21 13:56:19,412 INFO L226 Difference]: Without dead ends: 684 [2022-11-21 13:56:19,413 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 [2022-11-21 13:56:19,418 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:19,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 197 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-21 13:56:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 674. [2022-11-21 13:56:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.4205052005943537) internal successors, (956), 673 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 956 transitions. [2022-11-21 13:56:19,860 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 956 transitions. Word has length 73 [2022-11-21 13:56:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:19,860 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 956 transitions. [2022-11-21 13:56:19,860 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) [2022-11-21 13:56:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 956 transitions. [2022-11-21 13:56:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 13:56:19,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:19,862 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] [2022-11-21 13:56:19,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 13:56:19,863 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:19,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash -852412764, now seen corresponding path program 1 times [2022-11-21 13:56:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184842499] [2022-11-21 13:56:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184842499] [2022-11-21 13:56:19,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184842499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:19,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:19,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720006007] [2022-11-21 13:56:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:19,953 INFO L87 Difference]: Start difference. First operand 674 states and 956 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2022-11-21 13:56:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:21,021 INFO L93 Difference]: Finished difference Result 1726 states and 2490 transitions. [2022-11-21 13:56:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:56:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 [2022-11-21 13:56:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:21,026 INFO L225 Difference]: With dead ends: 1726 [2022-11-21 13:56:21,027 INFO L226 Difference]: Without dead ends: 1426 [2022-11-21 13:56:21,028 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 [2022-11-21 13:56:21,028 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 295 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:21,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 438 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-11-21 13:56:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1122. [2022-11-21 13:56:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4326494201605708) internal successors, (1606), 1121 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1606 transitions. [2022-11-21 13:56:21,765 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1606 transitions. Word has length 73 [2022-11-21 13:56:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:21,765 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1606 transitions. [2022-11-21 13:56:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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) [2022-11-21 13:56:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1606 transitions. [2022-11-21 13:56:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 13:56:21,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:21,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 13:56:21,768 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1459706699, now seen corresponding path program 1 times [2022-11-21 13:56:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:21,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277066364] [2022-11-21 13:56:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277066364] [2022-11-21 13:56:21,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277066364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:21,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:21,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:21,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790036269] [2022-11-21 13:56:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:21,816 INFO L87 Difference]: Start difference. First operand 1122 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:23,269 INFO L93 Difference]: Finished difference Result 2526 states and 3651 transitions. [2022-11-21 13:56:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-21 13:56:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:23,272 INFO L225 Difference]: With dead ends: 2526 [2022-11-21 13:56:23,272 INFO L226 Difference]: Without dead ends: 1480 [2022-11-21 13:56:23,273 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 [2022-11-21 13:56:23,274 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 51 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 281 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-11-21 13:56:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1462. [2022-11-21 13:56:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 1.4243668720054756) internal successors, (2081), 1461 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2081 transitions. [2022-11-21 13:56:24,211 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2081 transitions. Word has length 74 [2022-11-21 13:56:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:24,212 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 2081 transitions. [2022-11-21 13:56:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2081 transitions. [2022-11-21 13:56:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 13:56:24,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:24,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 13:56:24,214 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1468955342, now seen corresponding path program 1 times [2022-11-21 13:56:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669342432] [2022-11-21 13:56:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669342432] [2022-11-21 13:56:24,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669342432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:24,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:24,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754873524] [2022-11-21 13:56:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:24,302 INFO L87 Difference]: Start difference. First operand 1462 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:26,094 INFO L93 Difference]: Finished difference Result 2676 states and 3839 transitions. [2022-11-21 13:56:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:56:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-21 13:56:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:26,099 INFO L225 Difference]: With dead ends: 2676 [2022-11-21 13:56:26,099 INFO L226 Difference]: Without dead ends: 2266 [2022-11-21 13:56:26,100 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 [2022-11-21 13:56:26,101 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 288 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 473 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-11-21 13:56:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1852. [2022-11-21 13:56:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 1.4278768233387358) internal successors, (2643), 1851 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2643 transitions. [2022-11-21 13:56:27,475 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2643 transitions. Word has length 74 [2022-11-21 13:56:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:27,476 INFO L495 AbstractCegarLoop]: Abstraction has 1852 states and 2643 transitions. [2022-11-21 13:56:27,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2643 transitions. [2022-11-21 13:56:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 13:56:27,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:27,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 13:56:27,478 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844587, now seen corresponding path program 1 times [2022-11-21 13:56:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307058206] [2022-11-21 13:56:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307058206] [2022-11-21 13:56:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307058206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:27,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:27,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301058227] [2022-11-21 13:56:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:27,563 INFO L87 Difference]: Start difference. First operand 1852 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:29,863 INFO L93 Difference]: Finished difference Result 5188 states and 7385 transitions. [2022-11-21 13:56:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:29,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-21 13:56:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:29,870 INFO L225 Difference]: With dead ends: 5188 [2022-11-21 13:56:29,870 INFO L226 Difference]: Without dead ends: 3412 [2022-11-21 13:56:29,872 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 [2022-11-21 13:56:29,873 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 55 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:29,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 258 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2022-11-21 13:56:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3194. [2022-11-21 13:56:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 1.4093329157532102) internal successors, (4500), 3193 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4500 transitions. [2022-11-21 13:56:32,083 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4500 transitions. Word has length 74 [2022-11-21 13:56:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:32,083 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 4500 transitions. [2022-11-21 13:56:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4500 transitions. [2022-11-21 13:56:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 13:56:32,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:32,085 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] [2022-11-21 13:56:32,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 13:56:32,085 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -536068422, now seen corresponding path program 1 times [2022-11-21 13:56:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:32,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034560835] [2022-11-21 13:56:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034560835] [2022-11-21 13:56:32,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034560835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:32,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:32,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484969364] [2022-11-21 13:56:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:32,197 INFO L87 Difference]: Start difference. First operand 3194 states and 4500 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:36,195 INFO L93 Difference]: Finished difference Result 8998 states and 12578 transitions. [2022-11-21 13:56:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:36,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-21 13:56:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:36,209 INFO L225 Difference]: With dead ends: 8998 [2022-11-21 13:56:36,209 INFO L226 Difference]: Without dead ends: 5880 [2022-11-21 13:56:36,212 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 [2022-11-21 13:56:36,213 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 45 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 257 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2022-11-21 13:56:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5446. [2022-11-21 13:56:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5445 states have (on average 1.3796143250688706) internal successors, (7512), 5445 states have internal predecessors, (7512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 7512 transitions. [2022-11-21 13:56:39,937 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 7512 transitions. Word has length 75 [2022-11-21 13:56:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 5446 states and 7512 transitions. [2022-11-21 13:56:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 7512 transitions. [2022-11-21 13:56:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 13:56:39,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:39,938 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] [2022-11-21 13:56:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 13:56:39,939 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1852091383, now seen corresponding path program 1 times [2022-11-21 13:56:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:39,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520317136] [2022-11-21 13:56:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:40,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520317136] [2022-11-21 13:56:40,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520317136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:40,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:40,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:56:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240359237] [2022-11-21 13:56:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:40,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:40,127 INFO L87 Difference]: Start difference. First operand 5446 states and 7512 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2022-11-21 13:56:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:46,492 INFO L93 Difference]: Finished difference Result 8560 states and 11714 transitions. [2022-11-21 13:56:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:56:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 [2022-11-21 13:56:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:46,520 INFO L225 Difference]: With dead ends: 8560 [2022-11-21 13:56:46,520 INFO L226 Difference]: Without dead ends: 8558 [2022-11-21 13:56:46,522 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 [2022-11-21 13:56:46,523 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 206 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:46,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 665 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:46,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8558 states. [2022-11-21 13:56:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8558 to 5542. [2022-11-21 13:56:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5541 states have (on average 1.3658184443241292) internal successors, (7568), 5541 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7568 transitions. [2022-11-21 13:56:50,363 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7568 transitions. Word has length 76 [2022-11-21 13:56:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:50,364 INFO L495 AbstractCegarLoop]: Abstraction has 5542 states and 7568 transitions. [2022-11-21 13:56:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2022-11-21 13:56:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7568 transitions. [2022-11-21 13:56:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 13:56:50,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:50,365 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] [2022-11-21 13:56:50,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 13:56:50,365 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:56:50,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:50,366 INFO L85 PathProgramCache]: Analyzing trace with hash -966335138, now seen corresponding path program 1 times [2022-11-21 13:56:50,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:50,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220555901] [2022-11-21 13:56:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:50,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:50,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220555901] [2022-11-21 13:56:50,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220555901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:50,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:50,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920487169] [2022-11-21 13:56:50,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:50,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:50,466 INFO L87 Difference]: Start difference. First operand 5542 states and 7568 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:55,975 INFO L93 Difference]: Finished difference Result 12850 states and 17506 transitions. [2022-11-21 13:56:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 13:56:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:55,991 INFO L225 Difference]: With dead ends: 12850 [2022-11-21 13:56:55,991 INFO L226 Difference]: Without dead ends: 7384 [2022-11-21 13:56:55,996 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 [2022-11-21 13:56:55,997 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:55,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2022-11-21 13:57:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 6774. [2022-11-21 13:57:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6774 states, 6773 states have (on average 1.3335301934150303) internal successors, (9032), 6773 states have internal predecessors, (9032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:57:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 9032 transitions. [2022-11-21 13:57:00,690 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 9032 transitions. Word has length 77 [2022-11-21 13:57:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:00,691 INFO L495 AbstractCegarLoop]: Abstraction has 6774 states and 9032 transitions. [2022-11-21 13:57:00,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:57:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 9032 transitions. [2022-11-21 13:57:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:57:00,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:00,694 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1] [2022-11-21 13:57:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 13:57:00,695 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:57:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash 914913403, now seen corresponding path program 1 times [2022-11-21 13:57:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:00,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418759337] [2022-11-21 13:57:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:01,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418759337] [2022-11-21 13:57:01,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418759337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:57:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10942020] [2022-11-21 13:57:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:01,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:57:01,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:57:01,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:57:01,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:57:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:57:01,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:57:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:02,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:04,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10942020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:57:04,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:57:04,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-11-21 13:57:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234283432] [2022-11-21 13:57:04,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 13:57:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 13:57:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-11-21 13:57:04,222 INFO L87 Difference]: Start difference. First operand 6774 states and 9032 transitions. Second operand has 27 states, 27 states have (on average 8.703703703703704) internal successors, (235), 26 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:08,565 INFO L93 Difference]: Finished difference Result 108011 states and 139538 transitions. [2022-11-21 13:59:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2022-11-21 13:59:08,565 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.703703703703704) internal successors, (235), 26 states have internal predecessors, (235), 0 states have call successors, (0), 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 98 [2022-11-21 13:59:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:08,844 INFO L225 Difference]: With dead ends: 108011 [2022-11-21 13:59:08,844 INFO L226 Difference]: Without dead ends: 101313 [2022-11-21 13:59:08,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65365 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=15532, Invalid=133850, Unknown=0, NotChecked=0, Total=149382 [2022-11-21 13:59:08,913 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 7178 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 4716 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7178 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:08,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7178 Valid, 5243 Invalid, 4763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 4716 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:59:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101313 states. [2022-11-21 13:59:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101313 to 25338. [2022-11-21 13:59:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 25337 states have (on average 1.3183881280341003) internal successors, (33404), 25337 states have internal predecessors, (33404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 33404 transitions. [2022-11-21 13:59:31,456 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 33404 transitions. Word has length 98 [2022-11-21 13:59:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:31,456 INFO L495 AbstractCegarLoop]: Abstraction has 25338 states and 33404 transitions. [2022-11-21 13:59:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.703703703703704) internal successors, (235), 26 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 33404 transitions. [2022-11-21 13:59:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:59:31,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:31,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-11-21 13:59:31,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:31,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:31,669 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 13:59:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1809238733, now seen corresponding path program 1 times [2022-11-21 13:59:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:31,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662335190] [2022-11-21 13:59:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:31,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662335190] [2022-11-21 13:59:31,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662335190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:31,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:31,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83907820] [2022-11-21 13:59:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:59:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:59:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:31,763 INFO L87 Difference]: Start difference. First operand 25338 states and 33404 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:53,603 INFO L93 Difference]: Finished difference Result 49835 states and 65731 transitions. [2022-11-21 13:59:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-21 13:59:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:53,657 INFO L225 Difference]: With dead ends: 49835 [2022-11-21 13:59:53,657 INFO L226 Difference]: Without dead ends: 24580 [2022-11-21 13:59:53,679 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 [2022-11-21 13:59:53,680 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 55 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:53,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 239 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24580 states. [2022-11-21 14:00:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24580 to 24403. [2022-11-21 14:00:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24403 states, 24402 states have (on average 1.2925579870502417) internal successors, (31541), 24402 states have internal predecessors, (31541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24403 states to 24403 states and 31541 transitions. [2022-11-21 14:00:14,874 INFO L78 Accepts]: Start accepts. Automaton has 24403 states and 31541 transitions. Word has length 98 [2022-11-21 14:00:14,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:14,874 INFO L495 AbstractCegarLoop]: Abstraction has 24403 states and 31541 transitions. [2022-11-21 14:00:14,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:00:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 24403 states and 31541 transitions. [2022-11-21 14:00:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-21 14:00:14,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:14,879 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, 1, 1, 1, 1] [2022-11-21 14:00:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 14:00:14,879 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-21 14:00:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1600083782, now seen corresponding path program 1 times [2022-11-21 14:00:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:00:14,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741219282] [2022-11-21 14:00:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:00:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:15,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741219282] [2022-11-21 14:00:15,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741219282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794741604] [2022-11-21 14:00:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:15,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:15,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0ce992-f306-40ff-bb30-e492204c3614/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:00:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:15,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 14:00:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:16,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:00:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:17,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794741604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:00:17,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:00:17,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 31 [2022-11-21 14:00:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360146245] [2022-11-21 14:00:17,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:00:17,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 14:00:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 14:00:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-11-21 14:00:17,550 INFO L87 Difference]: Start difference. First operand 24403 states and 31541 transitions. Second operand has 31 states, 31 states have (on average 8.709677419354838) internal successors, (270), 31 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)