./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-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_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/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_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/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_5168eab0-cc73-45bb-85e9-e2ab999229ac/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 c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 --- 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 17:19:12,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:19:12,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:19:12,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:19:12,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:19:12,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:19:12,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:19:12,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:19:12,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:19:12,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:19:12,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:19:12,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:19:12,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:19:12,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:19:12,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:19:12,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:19:12,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:19:12,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:19:12,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:19:12,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:19:12,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:19:12,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:19:12,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:19:12,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:19:12,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:19:12,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:19:12,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:19:12,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:19:12,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:19:12,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:19:12,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:19:12,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:19:12,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:19:12,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:19:12,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:19:12,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:19:12,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:19:12,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:19:12,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:19:12,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:19:12,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:19:12,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:19:12,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:19:12,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:19:12,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:19:12,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:19:12,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:19:12,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:19:12,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:19:12,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:19:12,570 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:19:12,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:19:12,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:19:12,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:19:12,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:19:12,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:19:12,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:19:12,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:19:12,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:19:12,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:19:12,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:19:12,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:19:12,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:19:12,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:19:12,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:19:12,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:19:12,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:19:12,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:19:12,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:19:12,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:19:12,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:19:12,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:19:12,577 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:19:12,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:19:12,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:19:12,578 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_5168eab0-cc73-45bb-85e9-e2ab999229ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 [2022-11-21 17:19:12,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:19:12,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:19:12,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:19:12,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:19:12,972 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:19:12,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-21 17:19:15,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:19:16,201 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:19:16,202 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-21 17:19:16,212 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/data/4326a1abb/50a08b1519d24d7693d6de182b9020b4/FLAGc426f3f91 [2022-11-21 17:19:16,227 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/data/4326a1abb/50a08b1519d24d7693d6de182b9020b4 [2022-11-21 17:19:16,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:19:16,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:19:16,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:19:16,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:19:16,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:19:16,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:16,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58199b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16, skipping insertion in model container [2022-11-21 17:19:16,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:16,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:19:16,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:19:16,675 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_5168eab0-cc73-45bb-85e9-e2ab999229ac/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2022-11-21 17:19:16,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:19:16,781 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:19:16,858 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_5168eab0-cc73-45bb-85e9-e2ab999229ac/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2022-11-21 17:19:16,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:19:16,946 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:19:16,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16 WrapperNode [2022-11-21 17:19:16,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:19:16,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:19:16,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:19:16,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:19:16,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:16,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,026 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 610 [2022-11-21 17:19:17,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:19:17,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:19:17,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:19:17,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:19:17,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:19:17,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:19:17,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:19:17,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:19:17,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (1/1) ... [2022-11-21 17:19:17,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:19:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:19:17,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:19:17,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:19:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:19:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:19:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:19:17,361 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:19:17,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:19:18,065 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:19:18,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:19:18,074 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:19:18,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:18 BoogieIcfgContainer [2022-11-21 17:19:18,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:19:18,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:19:18,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:19:18,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:19:18,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:19:16" (1/3) ... [2022-11-21 17:19:18,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:18, skipping insertion in model container [2022-11-21 17:19:18,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:16" (2/3) ... [2022-11-21 17:19:18,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:18, skipping insertion in model container [2022-11-21 17:19:18,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:18" (3/3) ... [2022-11-21 17:19:18,086 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-11-21 17:19:18,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:19:18,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:19:18,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:19:18,180 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;@6c2af88c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:19:18,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:19:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 17:19:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 17:19:18,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:18,204 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 17:19:18,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 985312972, now seen corresponding path program 1 times [2022-11-21 17:19:18,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:18,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058367442] [2022-11-21 17:19:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:18,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:19:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058367442] [2022-11-21 17:19:18,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058367442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:18,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:18,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:19:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189993082] [2022-11-21 17:19:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:18,904 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 17:19:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:19,215 INFO L93 Difference]: Finished difference Result 517 states and 836 transitions. [2022-11-21 17:19:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 17:19:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:19,231 INFO L225 Difference]: With dead ends: 517 [2022-11-21 17:19:19,232 INFO L226 Difference]: Without dead ends: 438 [2022-11-21 17:19:19,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:19,239 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 913 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:19,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1288 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:19:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-21 17:19:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 256. [2022-11-21 17:19:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 17:19:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions. [2022-11-21 17:19:19,309 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 50 [2022-11-21 17:19:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions. [2022-11-21 17:19:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 17:19:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions. [2022-11-21 17:19:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 17:19:19,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:19,313 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 17:19:19,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:19:19,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash -722006169, now seen corresponding path program 1 times [2022-11-21 17:19:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:19,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246075813] [2022-11-21 17:19:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:19,427 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 17:19:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:19,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246075813] [2022-11-21 17:19:19,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246075813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:19,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:19,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:19:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983338892] [2022-11-21 17:19:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:19:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:19:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:19:19,432 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:19,524 INFO L93 Difference]: Finished difference Result 628 states and 954 transitions. [2022-11-21 17:19:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:19:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:19,530 INFO L225 Difference]: With dead ends: 628 [2022-11-21 17:19:19,530 INFO L226 Difference]: Without dead ends: 430 [2022-11-21 17:19:19,539 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 17:19:19,543 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:19:19,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-21 17:19:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2022-11-21 17:19:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.484777517564403) internal successors, (634), 427 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 17:19:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 634 transitions. [2022-11-21 17:19:19,623 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 634 transitions. Word has length 53 [2022-11-21 17:19:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:19,623 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 634 transitions. [2022-11-21 17:19:19,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 634 transitions. [2022-11-21 17:19:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 17:19:19,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:19,631 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 17:19:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:19:19,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -695460410, now seen corresponding path program 1 times [2022-11-21 17:19:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:19,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780546516] [2022-11-21 17:19:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:19,758 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 17:19:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780546516] [2022-11-21 17:19:19,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780546516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:19,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:19:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052948354] [2022-11-21 17:19:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:19,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:19:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:19,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:19:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:19:19,764 INFO L87 Difference]: Start difference. First operand 428 states and 634 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:19,865 INFO L93 Difference]: Finished difference Result 1078 states and 1615 transitions. [2022-11-21 17:19:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:19:19,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:19,871 INFO L225 Difference]: With dead ends: 1078 [2022-11-21 17:19:19,872 INFO L226 Difference]: Without dead ends: 750 [2022-11-21 17:19:19,876 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 17:19:19,881 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:19:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-21 17:19:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2022-11-21 17:19:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4725568942436413) internal successors, (1100), 747 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 17:19:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1100 transitions. [2022-11-21 17:19:20,012 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1100 transitions. Word has length 53 [2022-11-21 17:19:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:20,013 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1100 transitions. [2022-11-21 17:19:20,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1100 transitions. [2022-11-21 17:19:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 17:19:20,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:20,016 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 17:19:20,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:19:20,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash -272648633, now seen corresponding path program 1 times [2022-11-21 17:19:20,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:20,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691387074] [2022-11-21 17:19:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,093 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 17:19:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691387074] [2022-11-21 17:19:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691387074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:20,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:19:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340361715] [2022-11-21 17:19:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:19:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:19:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:19:20,097 INFO L87 Difference]: Start difference. First operand 748 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:20,250 INFO L93 Difference]: Finished difference Result 1859 states and 2747 transitions. [2022-11-21 17:19:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:19:20,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:20,256 INFO L225 Difference]: With dead ends: 1859 [2022-11-21 17:19:20,256 INFO L226 Difference]: Without dead ends: 1295 [2022-11-21 17:19:20,257 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 17:19:20,258 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:19:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-11-21 17:19:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2022-11-21 17:19:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.4504643962848298) internal successors, (1874), 1292 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states 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 17:19:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1874 transitions. [2022-11-21 17:19:20,391 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1874 transitions. Word has length 53 [2022-11-21 17:19:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:20,392 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1874 transitions. [2022-11-21 17:19:20,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 17:19:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1874 transitions. [2022-11-21 17:19:20,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 17:19:20,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:20,394 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 17:19:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:19:20,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1724922721, now seen corresponding path program 1 times [2022-11-21 17:19:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:20,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902316140] [2022-11-21 17:19:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:20,560 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 17:19:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:20,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902316140] [2022-11-21 17:19:20,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902316140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:20,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:20,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:19:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053711483] [2022-11-21 17:19:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:20,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:20,563 INFO L87 Difference]: Start difference. First operand 1293 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:20,873 INFO L93 Difference]: Finished difference Result 2516 states and 3713 transitions. [2022-11-21 17:19:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:20,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:20,884 INFO L225 Difference]: With dead ends: 2516 [2022-11-21 17:19:20,885 INFO L226 Difference]: Without dead ends: 2150 [2022-11-21 17:19:20,887 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 17:19:20,887 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 634 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:20,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1128 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:19:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-11-21 17:19:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1745. [2022-11-21 17:19:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.4581422018348624) internal successors, (2543), 1744 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states 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 17:19:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2543 transitions. [2022-11-21 17:19:21,112 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2543 transitions. Word has length 54 [2022-11-21 17:19:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:21,112 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2543 transitions. [2022-11-21 17:19:21,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2543 transitions. [2022-11-21 17:19:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 17:19:21,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:21,118 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 17:19:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:19:21,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1943574737, now seen corresponding path program 1 times [2022-11-21 17:19:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:21,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28559934] [2022-11-21 17:19:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:21,224 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 17:19:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:21,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28559934] [2022-11-21 17:19:21,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28559934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:21,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:21,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:19:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35064762] [2022-11-21 17:19:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:21,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:21,226 INFO L87 Difference]: Start difference. First operand 1745 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:21,585 INFO L93 Difference]: Finished difference Result 2968 states and 4382 transitions. [2022-11-21 17:19:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:21,596 INFO L225 Difference]: With dead ends: 2968 [2022-11-21 17:19:21,597 INFO L226 Difference]: Without dead ends: 2602 [2022-11-21 17:19:21,598 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 17:19:21,599 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 624 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1029 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:19:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2022-11-21 17:19:21,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2091. [2022-11-21 17:19:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4631578947368422) internal successors, (3058), 2090 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states 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 17:19:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3058 transitions. [2022-11-21 17:19:21,862 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3058 transitions. Word has length 54 [2022-11-21 17:19:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:21,863 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3058 transitions. [2022-11-21 17:19:21,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3058 transitions. [2022-11-21 17:19:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 17:19:21,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:21,866 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 17:19:21,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:19:21,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -867408349, now seen corresponding path program 1 times [2022-11-21 17:19:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:21,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595359626] [2022-11-21 17:19:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:22,067 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 17:19:22,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:22,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595359626] [2022-11-21 17:19:22,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595359626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:22,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:22,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:19:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998546747] [2022-11-21 17:19:22,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:22,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:22,070 INFO L87 Difference]: Start difference. First operand 2091 states and 3058 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:22,442 INFO L93 Difference]: Finished difference Result 3367 states and 4972 transitions. [2022-11-21 17:19:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:22,453 INFO L225 Difference]: With dead ends: 3367 [2022-11-21 17:19:22,453 INFO L226 Difference]: Without dead ends: 3001 [2022-11-21 17:19:22,455 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 17:19:22,456 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 628 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:22,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1128 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:19:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-11-21 17:19:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2382. [2022-11-21 17:19:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.4666106677866442) internal successors, (3492), 2381 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states 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 17:19:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3492 transitions. [2022-11-21 17:19:22,701 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3492 transitions. Word has length 54 [2022-11-21 17:19:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:22,701 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3492 transitions. [2022-11-21 17:19:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 17:19:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3492 transitions. [2022-11-21 17:19:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:19:22,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:22,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:19:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:19:22,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash -554993830, now seen corresponding path program 1 times [2022-11-21 17:19:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:22,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900895472] [2022-11-21 17:19:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:22,871 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 17:19:22,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900895472] [2022-11-21 17:19:22,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900895472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:22,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:22,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:19:22,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532617956] [2022-11-21 17:19:22,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:22,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:22,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:22,876 INFO L87 Difference]: Start difference. First operand 2382 states and 3492 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:23,517 INFO L93 Difference]: Finished difference Result 5669 states and 8297 transitions. [2022-11-21 17:19:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:19:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:23,529 INFO L225 Difference]: With dead ends: 5669 [2022-11-21 17:19:23,529 INFO L226 Difference]: Without dead ends: 3315 [2022-11-21 17:19:23,534 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 17:19:23,536 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 894 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:23,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 208 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:19:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-11-21 17:19:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3288. [2022-11-21 17:19:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 1.4432613325220567) internal successors, (4744), 3287 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states 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 17:19:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4744 transitions. [2022-11-21 17:19:23,984 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4744 transitions. Word has length 58 [2022-11-21 17:19:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:23,984 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 4744 transitions. [2022-11-21 17:19:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4744 transitions. [2022-11-21 17:19:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:19:23,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:23,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:19:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:19:23,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash 500702524, now seen corresponding path program 1 times [2022-11-21 17:19:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:23,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174636888] [2022-11-21 17:19:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:24,078 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 17:19:24,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174636888] [2022-11-21 17:19:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174636888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:24,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:24,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:19:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787828455] [2022-11-21 17:19:24,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:24,082 INFO L87 Difference]: Start difference. First operand 3288 states and 4744 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:24,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:24,883 INFO L93 Difference]: Finished difference Result 7833 states and 11294 transitions. [2022-11-21 17:19:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:19:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:24,902 INFO L225 Difference]: With dead ends: 7833 [2022-11-21 17:19:24,902 INFO L226 Difference]: Without dead ends: 4591 [2022-11-21 17:19:24,907 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 17:19:24,910 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 880 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:24,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 226 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:19:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2022-11-21 17:19:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4566. [2022-11-21 17:19:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4566 states, 4565 states have (on average 1.4297918948521358) internal successors, (6527), 4565 states have internal predecessors, (6527), 0 states have call successors, (0), 0 states 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 17:19:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 6527 transitions. [2022-11-21 17:19:25,529 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 6527 transitions. Word has length 58 [2022-11-21 17:19:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:25,529 INFO L495 AbstractCegarLoop]: Abstraction has 4566 states and 6527 transitions. [2022-11-21 17:19:25,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:19:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 6527 transitions. [2022-11-21 17:19:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 17:19:25,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:25,533 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] [2022-11-21 17:19:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:19:25,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1531409244, now seen corresponding path program 1 times [2022-11-21 17:19:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:25,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272826784] [2022-11-21 17:19:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:25,639 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 17:19:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:25,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272826784] [2022-11-21 17:19:25,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272826784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:25,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:25,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:19:25,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090439759] [2022-11-21 17:19:25,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:25,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:19:25,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:25,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:19:25,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:19:25,642 INFO L87 Difference]: Start difference. First operand 4566 states and 6527 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:19:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:26,677 INFO L93 Difference]: Finished difference Result 10822 states and 15448 transitions. [2022-11-21 17:19:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:19:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-21 17:19:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:26,703 INFO L225 Difference]: With dead ends: 10822 [2022-11-21 17:19:26,703 INFO L226 Difference]: Without dead ends: 6338 [2022-11-21 17:19:26,708 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 17:19:26,709 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 835 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:26,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 228 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:19:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2022-11-21 17:19:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6303. [2022-11-21 17:19:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 6302 states have (on average 1.4136781973976515) internal successors, (8909), 6302 states have internal predecessors, (8909), 0 states have call successors, (0), 0 states 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 17:19:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8909 transitions. [2022-11-21 17:19:27,528 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8909 transitions. Word has length 59 [2022-11-21 17:19:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:27,528 INFO L495 AbstractCegarLoop]: Abstraction has 6303 states and 8909 transitions. [2022-11-21 17:19:27,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:19:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8909 transitions. [2022-11-21 17:19:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 17:19:27,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:27,565 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] [2022-11-21 17:19:27,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:19:27,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash -97252013, now seen corresponding path program 1 times [2022-11-21 17:19:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:27,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527256151] [2022-11-21 17:19:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:27,711 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 17:19:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527256151] [2022-11-21 17:19:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527256151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:27,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:19:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290555308] [2022-11-21 17:19:27,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:19:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:19:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:27,714 INFO L87 Difference]: Start difference. First operand 6303 states and 8909 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:31,173 INFO L93 Difference]: Finished difference Result 24311 states and 34246 transitions. [2022-11-21 17:19:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:19:31,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-21 17:19:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:31,235 INFO L225 Difference]: With dead ends: 24311 [2022-11-21 17:19:31,235 INFO L226 Difference]: Without dead ends: 21033 [2022-11-21 17:19:31,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:19:31,244 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2073 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:31,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 343 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:19:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21033 states. [2022-11-21 17:19:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21033 to 6323. [2022-11-21 17:19:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6323 states, 6322 states have (on average 1.4130022144890857) internal successors, (8933), 6322 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states 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 17:19:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 8933 transitions. [2022-11-21 17:19:32,848 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 8933 transitions. Word has length 60 [2022-11-21 17:19:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:32,849 INFO L495 AbstractCegarLoop]: Abstraction has 6323 states and 8933 transitions. [2022-11-21 17:19:32,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 8933 transitions. [2022-11-21 17:19:32,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 17:19:32,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:32,852 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] [2022-11-21 17:19:32,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:19:32,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash -172891724, now seen corresponding path program 1 times [2022-11-21 17:19:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643369487] [2022-11-21 17:19:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:32,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:32,972 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 17:19:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:32,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643369487] [2022-11-21 17:19:32,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643369487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:32,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:32,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:19:32,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602155623] [2022-11-21 17:19:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:32,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:19:32,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:19:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:32,975 INFO L87 Difference]: Start difference. First operand 6323 states and 8933 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:37,306 INFO L93 Difference]: Finished difference Result 28525 states and 40259 transitions. [2022-11-21 17:19:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:19:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-21 17:19:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:37,393 INFO L225 Difference]: With dead ends: 28525 [2022-11-21 17:19:37,393 INFO L226 Difference]: Without dead ends: 25419 [2022-11-21 17:19:37,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:19:37,406 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2365 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:37,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 388 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:19:37,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25419 states. [2022-11-21 17:19:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25419 to 6417. [2022-11-21 17:19:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6417 states, 6416 states have (on average 1.4111596009975063) internal successors, (9054), 6416 states have internal predecessors, (9054), 0 states have call successors, (0), 0 states 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 17:19:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6417 states to 6417 states and 9054 transitions. [2022-11-21 17:19:38,704 INFO L78 Accepts]: Start accepts. Automaton has 6417 states and 9054 transitions. Word has length 60 [2022-11-21 17:19:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:38,704 INFO L495 AbstractCegarLoop]: Abstraction has 6417 states and 9054 transitions. [2022-11-21 17:19:38,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6417 states and 9054 transitions. [2022-11-21 17:19:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 17:19:38,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:38,709 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] [2022-11-21 17:19:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:19:38,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2054897963, now seen corresponding path program 1 times [2022-11-21 17:19:38,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:38,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566630009] [2022-11-21 17:19:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:38,869 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 17:19:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566630009] [2022-11-21 17:19:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566630009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:38,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:38,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:19:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031587004] [2022-11-21 17:19:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:38,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:19:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:19:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:19:38,872 INFO L87 Difference]: Start difference. First operand 6417 states and 9054 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:45,154 INFO L93 Difference]: Finished difference Result 34344 states and 48423 transitions. [2022-11-21 17:19:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:19:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-21 17:19:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:45,227 INFO L225 Difference]: With dead ends: 34344 [2022-11-21 17:19:45,228 INFO L226 Difference]: Without dead ends: 31246 [2022-11-21 17:19:45,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:19:45,239 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2737 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:45,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2737 Valid, 410 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:19:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31246 states. [2022-11-21 17:19:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31246 to 6473. [2022-11-21 17:19:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6473 states, 6472 states have (on average 1.409610630407911) internal successors, (9123), 6472 states have internal predecessors, (9123), 0 states have call successors, (0), 0 states 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 17:19:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9123 transitions. [2022-11-21 17:19:46,733 INFO L78 Accepts]: Start accepts. Automaton has 6473 states and 9123 transitions. Word has length 60 [2022-11-21 17:19:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:46,733 INFO L495 AbstractCegarLoop]: Abstraction has 6473 states and 9123 transitions. [2022-11-21 17:19:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:19:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6473 states and 9123 transitions. [2022-11-21 17:19:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 17:19:46,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:46,738 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] [2022-11-21 17:19:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:19:46,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1036507303, now seen corresponding path program 1 times [2022-11-21 17:19:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:46,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012189100] [2022-11-21 17:19:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:47,190 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 17:19:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012189100] [2022-11-21 17:19:47,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012189100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:47,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:47,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:19:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794761584] [2022-11-21 17:19:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:47,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:19:47,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:19:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:19:47,193 INFO L87 Difference]: Start difference. First operand 6473 states and 9123 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:19:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:19:53,193 INFO L93 Difference]: Finished difference Result 24418 states and 34421 transitions. [2022-11-21 17:19:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:19:53,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-21 17:19:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:19:53,231 INFO L225 Difference]: With dead ends: 24418 [2022-11-21 17:19:53,231 INFO L226 Difference]: Without dead ends: 19216 [2022-11-21 17:19:53,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:19:53,241 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 2022 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:19:53,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 1549 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:19:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2022-11-21 17:19:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 6341. [2022-11-21 17:19:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6340 states have (on average 1.407570977917981) internal successors, (8924), 6340 states have internal predecessors, (8924), 0 states have call successors, (0), 0 states 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 17:19:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8924 transitions. [2022-11-21 17:19:54,996 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8924 transitions. Word has length 62 [2022-11-21 17:19:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:19:54,997 INFO L495 AbstractCegarLoop]: Abstraction has 6341 states and 8924 transitions. [2022-11-21 17:19:54,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:19:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8924 transitions. [2022-11-21 17:19:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 17:19:55,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:19:55,001 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] [2022-11-21 17:19:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:19:55,001 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:19:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:19:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1459319080, now seen corresponding path program 1 times [2022-11-21 17:19:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:19:55,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982016813] [2022-11-21 17:19:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:19:55,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:19:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:19:55,328 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 17:19:55,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:19:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982016813] [2022-11-21 17:19:55,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982016813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:19:55,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:19:55,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:19:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115623561] [2022-11-21 17:19:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:19:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:19:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:19:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:19:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:19:55,331 INFO L87 Difference]: Start difference. First operand 6341 states and 8924 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:20:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:02,042 INFO L93 Difference]: Finished difference Result 24550 states and 34500 transitions. [2022-11-21 17:20:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:20:02,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-21 17:20:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:02,078 INFO L225 Difference]: With dead ends: 24550 [2022-11-21 17:20:02,079 INFO L226 Difference]: Without dead ends: 19255 [2022-11-21 17:20:02,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:20:02,089 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1941 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:02,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 1584 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:20:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19255 states. [2022-11-21 17:20:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19255 to 6144. [2022-11-21 17:20:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 1.4061533452710402) internal successors, (8638), 6143 states have internal predecessors, (8638), 0 states have call successors, (0), 0 states 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 17:20:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 8638 transitions. [2022-11-21 17:20:03,863 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 8638 transitions. Word has length 62 [2022-11-21 17:20:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:03,864 INFO L495 AbstractCegarLoop]: Abstraction has 6144 states and 8638 transitions. [2022-11-21 17:20:03,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:20:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 8638 transitions. [2022-11-21 17:20:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-21 17:20:03,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:03,867 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] [2022-11-21 17:20:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:20:03,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2010042985, now seen corresponding path program 1 times [2022-11-21 17:20:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:03,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760593221] [2022-11-21 17:20:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:04,215 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 17:20:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760593221] [2022-11-21 17:20:04,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760593221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:04,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:04,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:20:04,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476007189] [2022-11-21 17:20:04,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:20:04,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:20:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:20:04,217 INFO L87 Difference]: Start difference. First operand 6144 states and 8638 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:20:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:10,449 INFO L93 Difference]: Finished difference Result 21217 states and 29874 transitions. [2022-11-21 17:20:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:20:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-21 17:20:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:10,469 INFO L225 Difference]: With dead ends: 21217 [2022-11-21 17:20:10,469 INFO L226 Difference]: Without dead ends: 15981 [2022-11-21 17:20:10,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:20:10,478 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 2109 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:10,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 1309 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 17:20:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-11-21 17:20:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 6003. [2022-11-21 17:20:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 6002 states have (on average 1.406697767410863) internal successors, (8443), 6002 states have internal predecessors, (8443), 0 states have call successors, (0), 0 states 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 17:20:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 8443 transitions. [2022-11-21 17:20:12,386 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 8443 transitions. Word has length 62 [2022-11-21 17:20:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:12,386 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 8443 transitions. [2022-11-21 17:20:12,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:20:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 8443 transitions. [2022-11-21 17:20:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:20:12,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:12,390 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] [2022-11-21 17:20:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:20:12,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1983119998, now seen corresponding path program 1 times [2022-11-21 17:20:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:12,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469048195] [2022-11-21 17:20:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:12,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:12,486 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 17:20:12,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:12,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469048195] [2022-11-21 17:20:12,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469048195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:12,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:12,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260821873] [2022-11-21 17:20:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:12,489 INFO L87 Difference]: Start difference. First operand 6003 states and 8443 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:14,243 INFO L93 Difference]: Finished difference Result 9060 states and 12752 transitions. [2022-11-21 17:20:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-21 17:20:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:14,249 INFO L225 Difference]: With dead ends: 9060 [2022-11-21 17:20:14,249 INFO L226 Difference]: Without dead ends: 5806 [2022-11-21 17:20:14,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:14,254 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 148 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:14,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 521 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2022-11-21 17:20:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5804. [2022-11-21 17:20:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 1.387558159572635) internal successors, (8052), 5803 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states 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 17:20:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 8052 transitions. [2022-11-21 17:20:15,952 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 8052 transitions. Word has length 63 [2022-11-21 17:20:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:15,952 INFO L495 AbstractCegarLoop]: Abstraction has 5804 states and 8052 transitions. [2022-11-21 17:20:15,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 8052 transitions. [2022-11-21 17:20:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:20:15,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:15,955 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] [2022-11-21 17:20:15,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:20:15,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1051173576, now seen corresponding path program 1 times [2022-11-21 17:20:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:15,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283378071] [2022-11-21 17:20:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:16,019 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 17:20:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283378071] [2022-11-21 17:20:16,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283378071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:16,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:16,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104062562] [2022-11-21 17:20:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:16,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:16,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:16,022 INFO L87 Difference]: Start difference. First operand 5804 states and 8052 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:17,926 INFO L93 Difference]: Finished difference Result 8092 states and 11221 transitions. [2022-11-21 17:20:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-21 17:20:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:17,931 INFO L225 Difference]: With dead ends: 8092 [2022-11-21 17:20:17,931 INFO L226 Difference]: Without dead ends: 5023 [2022-11-21 17:20:17,934 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 17:20:17,935 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 134 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:17,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 513 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2022-11-21 17:20:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5021. [2022-11-21 17:20:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.3629482071713148) internal successors, (6842), 5020 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states 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 17:20:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 6842 transitions. [2022-11-21 17:20:19,476 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 6842 transitions. Word has length 63 [2022-11-21 17:20:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:19,477 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 6842 transitions. [2022-11-21 17:20:19,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 6842 transitions. [2022-11-21 17:20:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:20:19,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:19,480 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] [2022-11-21 17:20:19,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:20:19,481 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -125701859, now seen corresponding path program 1 times [2022-11-21 17:20:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:19,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270058327] [2022-11-21 17:20:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:19,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:19,537 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 17:20:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270058327] [2022-11-21 17:20:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270058327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:19,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387948402] [2022-11-21 17:20:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:19,541 INFO L87 Difference]: Start difference. First operand 5021 states and 6842 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:21,190 INFO L93 Difference]: Finished difference Result 6625 states and 9028 transitions. [2022-11-21 17:20:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:21,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-21 17:20:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:21,195 INFO L225 Difference]: With dead ends: 6625 [2022-11-21 17:20:21,196 INFO L226 Difference]: Without dead ends: 3867 [2022-11-21 17:20:21,200 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 17:20:21,200 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 146 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:21,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2022-11-21 17:20:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3865. [2022-11-21 17:20:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3864 states have (on average 1.3382505175983437) internal successors, (5171), 3864 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states 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 17:20:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 5171 transitions. [2022-11-21 17:20:22,545 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 5171 transitions. Word has length 63 [2022-11-21 17:20:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:22,545 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 5171 transitions. [2022-11-21 17:20:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 17:20:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 5171 transitions. [2022-11-21 17:20:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:20:22,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:22,549 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] [2022-11-21 17:20:22,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:20:22,549 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 666404545, now seen corresponding path program 1 times [2022-11-21 17:20:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:22,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821010533] [2022-11-21 17:20:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:22,594 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 17:20:22,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821010533] [2022-11-21 17:20:22,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821010533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:22,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:22,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67389940] [2022-11-21 17:20:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:22,596 INFO L87 Difference]: Start difference. First operand 3865 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:24,506 INFO L93 Difference]: Finished difference Result 7116 states and 9579 transitions. [2022-11-21 17:20:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:20:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:24,511 INFO L225 Difference]: With dead ends: 7116 [2022-11-21 17:20:24,512 INFO L226 Difference]: Without dead ends: 5197 [2022-11-21 17:20:24,514 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 17:20:24,515 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 171 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:24,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 343 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2022-11-21 17:20:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 3680. [2022-11-21 17:20:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 1.337048110899701) internal successors, (4919), 3679 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states 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 17:20:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4919 transitions. [2022-11-21 17:20:25,644 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4919 transitions. Word has length 64 [2022-11-21 17:20:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:25,644 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 4919 transitions. [2022-11-21 17:20:25,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4919 transitions. [2022-11-21 17:20:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:20:25,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:25,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:20:25,648 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash 859970200, now seen corresponding path program 1 times [2022-11-21 17:20:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:25,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439678378] [2022-11-21 17:20:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:27,183 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 17:20:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:27,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439678378] [2022-11-21 17:20:27,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439678378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:27,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:27,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-21 17:20:27,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846090917] [2022-11-21 17:20:27,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:27,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:20:27,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:20:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:20:27,186 INFO L87 Difference]: Start difference. First operand 3680 states and 4919 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:35,387 INFO L93 Difference]: Finished difference Result 7604 states and 10239 transitions. [2022-11-21 17:20:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:20:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:20:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:35,395 INFO L225 Difference]: With dead ends: 7604 [2022-11-21 17:20:35,395 INFO L226 Difference]: Without dead ends: 7537 [2022-11-21 17:20:35,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=382, Invalid=1780, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 17:20:35,397 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2456 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 6590 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:35,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 6590 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3620 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:20:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7537 states. [2022-11-21 17:20:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7537 to 3692. [2022-11-21 17:20:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3691 states have (on average 1.3367651043077757) internal successors, (4934), 3691 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states 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 17:20:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4934 transitions. [2022-11-21 17:20:36,605 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4934 transitions. Word has length 64 [2022-11-21 17:20:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:36,605 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 4934 transitions. [2022-11-21 17:20:36,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4934 transitions. [2022-11-21 17:20:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:20:36,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:36,608 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] [2022-11-21 17:20:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:20:36,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1948770272, now seen corresponding path program 1 times [2022-11-21 17:20:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322561205] [2022-11-21 17:20:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:38,026 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 17:20:38,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322561205] [2022-11-21 17:20:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322561205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:38,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:38,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-21 17:20:38,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209296967] [2022-11-21 17:20:38,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:20:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:20:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:20:38,029 INFO L87 Difference]: Start difference. First operand 3692 states and 4934 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:46,711 INFO L93 Difference]: Finished difference Result 7070 states and 9522 transitions. [2022-11-21 17:20:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 17:20:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:20:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:46,722 INFO L225 Difference]: With dead ends: 7070 [2022-11-21 17:20:46,722 INFO L226 Difference]: Without dead ends: 7003 [2022-11-21 17:20:46,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=432, Invalid=1730, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 17:20:46,724 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1712 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 6053 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:46,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 6053 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 17:20:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2022-11-21 17:20:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 3692. [2022-11-21 17:20:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3691 states have (on average 1.3364941750203196) internal successors, (4933), 3691 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states 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 17:20:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4933 transitions. [2022-11-21 17:20:48,077 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4933 transitions. Word has length 64 [2022-11-21 17:20:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:48,077 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 4933 transitions. [2022-11-21 17:20:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4933 transitions. [2022-11-21 17:20:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:20:48,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:48,080 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] [2022-11-21 17:20:48,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:20:48,081 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 682523932, now seen corresponding path program 1 times [2022-11-21 17:20:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061621525] [2022-11-21 17:20:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:48,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:49,466 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 17:20:49,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:49,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061621525] [2022-11-21 17:20:49,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061621525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:49,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:49,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-21 17:20:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926394762] [2022-11-21 17:20:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:49,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:20:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:20:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:20:49,469 INFO L87 Difference]: Start difference. First operand 3692 states and 4933 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:57,861 INFO L93 Difference]: Finished difference Result 7502 states and 10092 transitions. [2022-11-21 17:20:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:20:57,862 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:20:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:57,870 INFO L225 Difference]: With dead ends: 7502 [2022-11-21 17:20:57,870 INFO L226 Difference]: Without dead ends: 7435 [2022-11-21 17:20:57,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=345, Invalid=1461, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:20:57,873 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2523 mSDsluCounter, 6815 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 7311 SdHoareTripleChecker+Invalid, 4214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:57,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 7311 Invalid, 4214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 17:20:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-11-21 17:20:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 3698. [2022-11-21 17:20:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 1.3362185555856099) internal successors, (4940), 3697 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states 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 17:20:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 4940 transitions. [2022-11-21 17:20:59,145 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 4940 transitions. Word has length 64 [2022-11-21 17:20:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:59,146 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 4940 transitions. [2022-11-21 17:20:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:20:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 4940 transitions. [2022-11-21 17:20:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:20:59,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:59,149 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] [2022-11-21 17:20:59,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 17:20:59,150 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:20:59,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1079669093, now seen corresponding path program 1 times [2022-11-21 17:20:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:59,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516066591] [2022-11-21 17:20:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:59,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:59,198 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 17:20:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:59,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516066591] [2022-11-21 17:20:59,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516066591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:59,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:59,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726001603] [2022-11-21 17:20:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:59,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:59,201 INFO L87 Difference]: Start difference. First operand 3698 states and 4940 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:21:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:01,160 INFO L93 Difference]: Finished difference Result 6782 states and 9122 transitions. [2022-11-21 17:21:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:21:01,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:21:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:01,168 INFO L225 Difference]: With dead ends: 6782 [2022-11-21 17:21:01,168 INFO L226 Difference]: Without dead ends: 4960 [2022-11-21 17:21:01,171 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 17:21:01,172 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 173 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:01,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:21:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2022-11-21 17:21:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 3488. [2022-11-21 17:21:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3487 states have (on average 1.335818755377115) internal successors, (4658), 3487 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states 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 17:21:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4658 transitions. [2022-11-21 17:21:02,364 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4658 transitions. Word has length 64 [2022-11-21 17:21:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:02,364 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 4658 transitions. [2022-11-21 17:21:02,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:21:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4658 transitions. [2022-11-21 17:21:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:21:02,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:02,367 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] [2022-11-21 17:21:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 17:21:02,368 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2017308149, now seen corresponding path program 1 times [2022-11-21 17:21:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:02,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586007627] [2022-11-21 17:21:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:02,411 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 17:21:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:02,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586007627] [2022-11-21 17:21:02,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586007627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:02,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:02,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:02,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013084988] [2022-11-21 17:21:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:02,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:21:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:21:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:21:02,414 INFO L87 Difference]: Start difference. First operand 3488 states and 4658 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:21:04,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:04,244 INFO L93 Difference]: Finished difference Result 6445 states and 8659 transitions. [2022-11-21 17:21:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:21:04,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:21:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:04,250 INFO L225 Difference]: With dead ends: 6445 [2022-11-21 17:21:04,250 INFO L226 Difference]: Without dead ends: 4645 [2022-11-21 17:21:04,252 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 17:21:04,253 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 166 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:04,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 331 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:21:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2022-11-21 17:21:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 3269. [2022-11-21 17:21:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3268 states have (on average 1.3347613219094248) internal successors, (4362), 3268 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states 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 17:21:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4362 transitions. [2022-11-21 17:21:05,443 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4362 transitions. Word has length 64 [2022-11-21 17:21:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:05,443 INFO L495 AbstractCegarLoop]: Abstraction has 3269 states and 4362 transitions. [2022-11-21 17:21:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:21:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4362 transitions. [2022-11-21 17:21:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:21:05,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:05,446 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] [2022-11-21 17:21:05,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 17:21:05,446 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash 144276108, now seen corresponding path program 1 times [2022-11-21 17:21:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:05,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627774018] [2022-11-21 17:21:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:06,076 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 17:21:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627774018] [2022-11-21 17:21:06,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627774018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:06,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:06,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:21:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041354912] [2022-11-21 17:21:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:21:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:21:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:21:06,078 INFO L87 Difference]: Start difference. First operand 3269 states and 4362 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:21:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:10,732 INFO L93 Difference]: Finished difference Result 7419 states and 9996 transitions. [2022-11-21 17:21:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:21:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-21 17:21:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:10,742 INFO L225 Difference]: With dead ends: 7419 [2022-11-21 17:21:10,742 INFO L226 Difference]: Without dead ends: 7071 [2022-11-21 17:21:10,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:21:10,745 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1514 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:10,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 3060 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 17:21:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2022-11-21 17:21:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 3203. [2022-11-21 17:21:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 1.3357276702061212) internal successors, (4277), 3202 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states 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 17:21:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4277 transitions. [2022-11-21 17:21:12,015 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4277 transitions. Word has length 65 [2022-11-21 17:21:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:12,015 INFO L495 AbstractCegarLoop]: Abstraction has 3203 states and 4277 transitions. [2022-11-21 17:21:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:21:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4277 transitions. [2022-11-21 17:21:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:21:12,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:12,017 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] [2022-11-21 17:21:12,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 17:21:12,018 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 402441546, now seen corresponding path program 1 times [2022-11-21 17:21:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:12,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849152697] [2022-11-21 17:21:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:12,831 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 17:21:12,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:12,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849152697] [2022-11-21 17:21:12,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849152697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:12,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:12,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 17:21:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784996253] [2022-11-21 17:21:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:12,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:21:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:21:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:21:12,833 INFO L87 Difference]: Start difference. First operand 3203 states and 4277 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:21:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:20,728 INFO L93 Difference]: Finished difference Result 8369 states and 11302 transitions. [2022-11-21 17:21:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 17:21:20,729 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-21 17:21:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:20,737 INFO L225 Difference]: With dead ends: 8369 [2022-11-21 17:21:20,737 INFO L226 Difference]: Without dead ends: 8044 [2022-11-21 17:21:20,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 17:21:20,739 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 2062 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:20,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6416 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 17:21:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-11-21 17:21:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 3142. [2022-11-21 17:21:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.3358802929003502) internal successors, (4196), 3141 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states 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 17:21:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4196 transitions. [2022-11-21 17:21:22,205 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4196 transitions. Word has length 65 [2022-11-21 17:21:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:22,205 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4196 transitions. [2022-11-21 17:21:22,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 17:21:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4196 transitions. [2022-11-21 17:21:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 17:21:22,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:22,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 17:21:22,208 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1563174538, now seen corresponding path program 1 times [2022-11-21 17:21:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:22,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075954656] [2022-11-21 17:21:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:22,312 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 17:21:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:22,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075954656] [2022-11-21 17:21:22,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075954656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:22,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:22,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369139670] [2022-11-21 17:21:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:21:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:21:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:21:22,315 INFO L87 Difference]: Start difference. First operand 3142 states and 4196 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:23,704 INFO L93 Difference]: Finished difference Result 3148 states and 4199 transitions. [2022-11-21 17:21:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-21 17:21:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:23,708 INFO L225 Difference]: With dead ends: 3148 [2022-11-21 17:21:23,708 INFO L226 Difference]: Without dead ends: 2705 [2022-11-21 17:21:23,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:21:23,709 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 422 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:23,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 752 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:21:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-11-21 17:21:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2701. [2022-11-21 17:21:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.3403703703703704) internal successors, (3619), 2700 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states 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 17:21:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3619 transitions. [2022-11-21 17:21:25,074 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3619 transitions. Word has length 69 [2022-11-21 17:21:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:25,074 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3619 transitions. [2022-11-21 17:21:25,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3619 transitions. [2022-11-21 17:21:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 17:21:25,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:25,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 17:21:25,077 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1535111263, now seen corresponding path program 1 times [2022-11-21 17:21:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:25,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144149457] [2022-11-21 17:21:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:25,164 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 17:21:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:25,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144149457] [2022-11-21 17:21:25,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144149457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:25,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:25,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:25,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196048790] [2022-11-21 17:21:25,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:25,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:21:25,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:25,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:21:25,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:21:25,167 INFO L87 Difference]: Start difference. First operand 2701 states and 3619 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:27,848 INFO L93 Difference]: Finished difference Result 6990 states and 9463 transitions. [2022-11-21 17:21:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:21:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-21 17:21:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:27,853 INFO L225 Difference]: With dead ends: 6990 [2022-11-21 17:21:27,853 INFO L226 Difference]: Without dead ends: 4682 [2022-11-21 17:21:27,856 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 17:21:27,856 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:21:27,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 426 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:21:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-11-21 17:21:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4386. [2022-11-21 17:21:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 1.3388825541619156) internal successors, (5871), 4385 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states 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 17:21:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5871 transitions. [2022-11-21 17:21:30,157 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5871 transitions. Word has length 72 [2022-11-21 17:21:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:30,157 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 5871 transitions. [2022-11-21 17:21:30,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5871 transitions. [2022-11-21 17:21:30,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 17:21:30,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:30,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:30,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 17:21:30,159 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1480821562, now seen corresponding path program 1 times [2022-11-21 17:21:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814405921] [2022-11-21 17:21:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:30,256 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 17:21:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:30,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814405921] [2022-11-21 17:21:30,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814405921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:30,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:30,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602793334] [2022-11-21 17:21:30,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:30,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:21:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:21:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:21:30,259 INFO L87 Difference]: Start difference. First operand 4386 states and 5871 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 17:21:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:35,165 INFO L93 Difference]: Finished difference Result 11938 states and 16077 transitions. [2022-11-21 17:21:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:21:35,166 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 17:21:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:35,175 INFO L225 Difference]: With dead ends: 11938 [2022-11-21 17:21:35,175 INFO L226 Difference]: Without dead ends: 7957 [2022-11-21 17:21:35,179 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 17:21:35,179 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 103 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 418 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 17:21:35,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 418 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:21:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2022-11-21 17:21:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 7367. [2022-11-21 17:21:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 1.3349171870757535) internal successors, (9833), 7366 states have internal predecessors, (9833), 0 states have call successors, (0), 0 states 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 17:21:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 9833 transitions. [2022-11-21 17:21:39,009 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 9833 transitions. Word has length 73 [2022-11-21 17:21:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:39,009 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 9833 transitions. [2022-11-21 17:21:39,009 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 17:21:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 9833 transitions. [2022-11-21 17:21:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 17:21:39,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:39,011 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 17:21:39,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 17:21:39,012 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1423402598, now seen corresponding path program 1 times [2022-11-21 17:21:39,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:39,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205488921] [2022-11-21 17:21:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:39,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:39,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205488921] [2022-11-21 17:21:39,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205488921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:39,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:39,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861324309] [2022-11-21 17:21:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:39,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:21:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:21:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:21:39,105 INFO L87 Difference]: Start difference. First operand 7367 states and 9833 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 17:21:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:21:47,246 INFO L93 Difference]: Finished difference Result 20471 states and 27331 transitions. [2022-11-21 17:21:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:21:47,246 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 17:21:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:21:47,264 INFO L225 Difference]: With dead ends: 20471 [2022-11-21 17:21:47,264 INFO L226 Difference]: Without dead ends: 13509 [2022-11-21 17:21:47,271 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 17:21:47,271 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 93 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 408 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 17:21:47,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 408 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:21:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2022-11-21 17:21:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 12331. [2022-11-21 17:21:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12331 states, 12330 states have (on average 1.3220600162206002) internal successors, (16301), 12330 states have internal predecessors, (16301), 0 states have call successors, (0), 0 states 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 17:21:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 16301 transitions. [2022-11-21 17:21:54,232 INFO L78 Accepts]: Start accepts. Automaton has 12331 states and 16301 transitions. Word has length 74 [2022-11-21 17:21:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:21:54,232 INFO L495 AbstractCegarLoop]: Abstraction has 12331 states and 16301 transitions. [2022-11-21 17:21:54,232 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 17:21:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 12331 states and 16301 transitions. [2022-11-21 17:21:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:21:54,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:21:54,234 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 17:21:54,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 17:21:54,234 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:21:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2071973989, now seen corresponding path program 1 times [2022-11-21 17:21:54,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:54,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732940260] [2022-11-21 17:21:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:54,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:54,411 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 17:21:54,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:54,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732940260] [2022-11-21 17:21:54,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732940260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:54,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:54,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:21:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363787563] [2022-11-21 17:21:54,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:54,414 INFO L87 Difference]: Start difference. First operand 12331 states and 16301 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 17:22:11,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:11,007 INFO L93 Difference]: Finished difference Result 26363 states and 34333 transitions. [2022-11-21 17:22:11,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:22:11,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 17:22:11,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:11,044 INFO L225 Difference]: With dead ends: 26363 [2022-11-21 17:22:11,044 INFO L226 Difference]: Without dead ends: 26361 [2022-11-21 17:22:11,048 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 17:22:11,049 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 329 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:11,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 980 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:22:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26361 states. [2022-11-21 17:22:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26361 to 13603. [2022-11-21 17:22:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13603 states, 13602 states have (on average 1.2919423614174386) internal successors, (17573), 13602 states have internal predecessors, (17573), 0 states have call successors, (0), 0 states 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 17:22:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13603 states to 13603 states and 17573 transitions. [2022-11-21 17:22:19,791 INFO L78 Accepts]: Start accepts. Automaton has 13603 states and 17573 transitions. Word has length 77 [2022-11-21 17:22:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:19,791 INFO L495 AbstractCegarLoop]: Abstraction has 13603 states and 17573 transitions. [2022-11-21 17:22:19,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 17:22:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 13603 states and 17573 transitions. [2022-11-21 17:22:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 17:22:19,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:19,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 17:22:19,794 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:22:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1914492299, now seen corresponding path program 1 times [2022-11-21 17:22:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:22:19,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100224483] [2022-11-21 17:22:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:22:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:19,846 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 17:22:19,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:22:19,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100224483] [2022-11-21 17:22:19,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100224483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:19,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:19,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592031615] [2022-11-21 17:22:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:19,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:22:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:19,848 INFO L87 Difference]: Start difference. First operand 13603 states and 17573 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:32,556 INFO L93 Difference]: Finished difference Result 33419 states and 42967 transitions. [2022-11-21 17:22:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-21 17:22:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:32,583 INFO L225 Difference]: With dead ends: 33419 [2022-11-21 17:22:32,583 INFO L226 Difference]: Without dead ends: 20221 [2022-11-21 17:22:32,591 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 17:22:32,592 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 129 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:32,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 338 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:22:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20221 states. [2022-11-21 17:22:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20221 to 20219. [2022-11-21 17:22:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20219 states, 20218 states have (on average 1.2678306459590465) internal successors, (25633), 20218 states have internal predecessors, (25633), 0 states have call successors, (0), 0 states 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 17:22:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20219 states to 20219 states and 25633 transitions. [2022-11-21 17:22:45,890 INFO L78 Accepts]: Start accepts. Automaton has 20219 states and 25633 transitions. Word has length 78 [2022-11-21 17:22:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:45,891 INFO L495 AbstractCegarLoop]: Abstraction has 20219 states and 25633 transitions. [2022-11-21 17:22:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 20219 states and 25633 transitions. [2022-11-21 17:22:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 17:22:45,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:45,896 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] [2022-11-21 17:22:45,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 17:22:45,897 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:22:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash 660908331, now seen corresponding path program 1 times [2022-11-21 17:22:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:22:45,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652741731] [2022-11-21 17:22:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:22:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:22:46,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652741731] [2022-11-21 17:22:46,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652741731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:22:46,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94424540] [2022-11-21 17:22:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:22:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:22:46,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:22:46,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5168eab0-cc73-45bb-85e9-e2ab999229ac/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:22:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:22:46,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:48,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:49,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94424540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:49,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:22:49,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-11-21 17:22:49,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331099777] [2022-11-21 17:22:49,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:49,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:22:49,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:22:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:22:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:22:49,925 INFO L87 Difference]: Start difference. First operand 20219 states and 25633 transitions. Second operand has 32 states, 32 states have (on average 8.0) internal successors, (256), 31 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 17:27:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:22,944 INFO L93 Difference]: Finished difference Result 297995 states and 369508 transitions. [2022-11-21 17:27:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2022-11-21 17:27:22,944 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0) internal successors, (256), 31 states have internal predecessors, (256), 0 states have call successors, (0), 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 97 [2022-11-21 17:27:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:23,715 INFO L225 Difference]: With dead ends: 297995 [2022-11-21 17:27:23,716 INFO L226 Difference]: Without dead ends: 286989 [2022-11-21 17:27:23,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45557 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=15003, Invalid=92253, Unknown=0, NotChecked=0, Total=107256 [2022-11-21 17:27:23,825 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 11118 mSDsluCounter, 9493 mSDsCounter, 0 mSdLazyCounter, 8959 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11118 SdHoareTripleChecker+Valid, 9916 SdHoareTripleChecker+Invalid, 9114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 8959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:23,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11118 Valid, 9916 Invalid, 9114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 8959 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-21 17:27:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286989 states.