./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/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 a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c --- 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 14:04:56,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:04:56,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:04:56,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:04:56,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:04:56,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:04:56,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:04:56,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:04:56,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:04:56,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:04:56,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:04:56,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:04:56,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:04:56,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:04:56,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:04:56,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:04:56,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:04:56,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:04:56,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:04:56,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:04:56,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:04:56,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:04:56,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:04:56,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:04:56,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:04:56,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:04:56,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:04:56,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:04:56,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:04:56,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:04:56,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:04:56,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:04:56,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:04:56,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:04:56,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:04:56,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:04:56,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:04:56,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:04:56,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:04:56,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:04:56,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:04:56,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 14:04:56,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:04:56,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:04:56,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:04:56,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:04:56,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:04:56,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:04:56,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:04:56,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:04:56,629 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:04:56,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:04:56,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:04:56,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:04:56,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:04:56,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:04:56,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:04:56,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:04:56,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:04:56,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:04:56,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:04:56,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:04:56,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:04:56,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:04:56,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:04:56,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:04:56,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:04:56,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:04:56,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:04:56,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:04:56,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:04:56,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:04:56,635 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:04:56,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:04:56,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:04:56,635 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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c [2022-11-21 14:04:56,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:04:56,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:04:56,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:04:56,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:04:56,944 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:04:56,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-21 14:04:59,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:05:00,315 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:05:00,316 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-21 14:05:00,347 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/data/874ff7fd8/412eee4e1ff44613bc57dfd02965d40e/FLAGf55e95067 [2022-11-21 14:05:00,368 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/data/874ff7fd8/412eee4e1ff44613bc57dfd02965d40e [2022-11-21 14:05:00,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:05:00,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:05:00,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:05:00,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:05:00,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:05:00,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:00,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0c509e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00, skipping insertion in model container [2022-11-21 14:05:00,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:00,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:05:00,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:05:00,620 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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2022-11-21 14:05:00,683 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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2022-11-21 14:05:00,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:05:00,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:05:00,831 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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2022-11-21 14:05:00,870 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_5bfebb45-e11f-4c7a-95af-751cd05c2c23/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2022-11-21 14:05:00,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:05:00,951 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:05:00,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00 WrapperNode [2022-11-21 14:05:00,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:05:00,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:05:00,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:05:00,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:05:00,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:00,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,037 INFO L138 Inliner]: procedures = 77, calls = 93, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1040 [2022-11-21 14:05:01,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:05:01,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:05:01,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:05:01,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:05:01,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:05:01,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:05:01,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:05:01,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:05:01,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (1/1) ... [2022-11-21 14:05:01,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:05:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:01,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:05:01,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:05:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:05:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 14:05:01,215 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 14:05:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-21 14:05:01,218 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-21 14:05:01,218 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-21 14:05:01,218 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-21 14:05:01,219 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-21 14:05:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-21 14:05:01,219 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-21 14:05:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-21 14:05:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-21 14:05:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-21 14:05:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-21 14:05:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-21 14:05:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-21 14:05:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-21 14:05:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-21 14:05:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-21 14:05:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-21 14:05:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-21 14:05:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-21 14:05:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-21 14:05:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:05:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-21 14:05:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-21 14:05:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-21 14:05:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-21 14:05:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:05:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:05:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-21 14:05:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-21 14:05:01,434 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:05:01,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:05:02,616 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:05:02,628 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:05:02,628 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-21 14:05:02,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:05:02 BoogieIcfgContainer [2022-11-21 14:05:02,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:05:02,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:05:02,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:05:02,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:05:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:05:00" (1/3) ... [2022-11-21 14:05:02,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42370d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:05:02, skipping insertion in model container [2022-11-21 14:05:02,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:05:00" (2/3) ... [2022-11-21 14:05:02,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42370d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:05:02, skipping insertion in model container [2022-11-21 14:05:02,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:05:02" (3/3) ... [2022-11-21 14:05:02,640 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-21 14:05:02,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:05:02,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 14:05:02,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:05:02,740 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;@46301819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:05:02,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 14:05:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 483 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 432 states have internal predecessors, (699), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-21 14:05:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:02,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:02,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:02,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash -353968614, now seen corresponding path program 1 times [2022-11-21 14:05:02,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:02,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268264873] [2022-11-21 14:05:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:03,446 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 14:05:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:03,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268264873] [2022-11-21 14:05:03,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268264873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:03,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:03,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:05:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393543376] [2022-11-21 14:05:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:03,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:05:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:05:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:05:03,545 INFO L87 Difference]: Start difference. First operand has 483 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 432 states have internal predecessors, (699), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:05,303 INFO L93 Difference]: Finished difference Result 1073 states and 1716 transitions. [2022-11-21 14:05:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:05:05,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-21 14:05:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:05,349 INFO L225 Difference]: With dead ends: 1073 [2022-11-21 14:05:05,349 INFO L226 Difference]: Without dead ends: 608 [2022-11-21 14:05:05,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:05:05,358 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 866 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:05,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2468 Invalid, 1634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 14:05:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-21 14:05:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 569. [2022-11-21 14:05:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 494 states have (on average 1.5263157894736843) internal successors, (754), 500 states have internal predecessors, (754), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-11-21 14:05:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 859 transitions. [2022-11-21 14:05:05,459 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 859 transitions. Word has length 65 [2022-11-21 14:05:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:05,460 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 859 transitions. [2022-11-21 14:05:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 859 transitions. [2022-11-21 14:05:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:05,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:05,464 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 14:05:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:05:05,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 49817337, now seen corresponding path program 1 times [2022-11-21 14:05:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:05,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308238725] [2022-11-21 14:05:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:05,724 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 14:05:05,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308238725] [2022-11-21 14:05:05,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308238725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:05,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:05,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:05:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928440782] [2022-11-21 14:05:05,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:05,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:05:05,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:05:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:05:05,737 INFO L87 Difference]: Start difference. First operand 569 states and 859 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:07,319 INFO L93 Difference]: Finished difference Result 916 states and 1336 transitions. [2022-11-21 14:05:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:05:07,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-21 14:05:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:07,324 INFO L225 Difference]: With dead ends: 916 [2022-11-21 14:05:07,325 INFO L226 Difference]: Without dead ends: 739 [2022-11-21 14:05:07,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-21 14:05:07,327 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1822 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:07,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 1985 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:05:07,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-21 14:05:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 665. [2022-11-21 14:05:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 570 states have (on average 1.5052631578947369) internal successors, (858), 578 states have internal predecessors, (858), 62 states have call successors, (62), 28 states have call predecessors, (62), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-21 14:05:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 993 transitions. [2022-11-21 14:05:07,383 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 993 transitions. Word has length 65 [2022-11-21 14:05:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:07,384 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 993 transitions. [2022-11-21 14:05:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 993 transitions. [2022-11-21 14:05:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:07,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:07,388 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 14:05:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:05:07,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1978768773, now seen corresponding path program 1 times [2022-11-21 14:05:07,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142148542] [2022-11-21 14:05:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142148542] [2022-11-21 14:05:07,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142148542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:07,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:07,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:05:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156426383] [2022-11-21 14:05:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:05:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:05:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:05:07,565 INFO L87 Difference]: Start difference. First operand 665 states and 993 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:09,276 INFO L93 Difference]: Finished difference Result 966 states and 1407 transitions. [2022-11-21 14:05:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:05:09,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-21 14:05:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:09,285 INFO L225 Difference]: With dead ends: 966 [2022-11-21 14:05:09,286 INFO L226 Difference]: Without dead ends: 699 [2022-11-21 14:05:09,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:05:09,294 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 975 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:09,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2520 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 14:05:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-21 14:05:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 670. [2022-11-21 14:05:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 574 states have (on average 1.4982578397212543) internal successors, (860), 582 states have internal predecessors, (860), 62 states have call successors, (62), 28 states have call predecessors, (62), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-11-21 14:05:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 996 transitions. [2022-11-21 14:05:09,350 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 996 transitions. Word has length 65 [2022-11-21 14:05:09,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:09,351 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 996 transitions. [2022-11-21 14:05:09,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 996 transitions. [2022-11-21 14:05:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:09,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:09,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:05:09,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1286839225, now seen corresponding path program 1 times [2022-11-21 14:05:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:09,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516335744] [2022-11-21 14:05:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:09,529 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 14:05:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516335744] [2022-11-21 14:05:09,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516335744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:09,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:09,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:05:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374561351] [2022-11-21 14:05:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:05:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:05:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:05:09,532 INFO L87 Difference]: Start difference. First operand 670 states and 996 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 14:05:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:12,008 INFO L93 Difference]: Finished difference Result 1992 states and 2792 transitions. [2022-11-21 14:05:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 14:05:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-21 14:05:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:12,019 INFO L225 Difference]: With dead ends: 1992 [2022-11-21 14:05:12,019 INFO L226 Difference]: Without dead ends: 1702 [2022-11-21 14:05:12,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 14:05:12,029 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 4087 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:12,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 2226 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 14:05:12,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-21 14:05:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1571. [2022-11-21 14:05:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1289 states have (on average 1.395655546935609) internal successors, (1799), 1312 states have internal predecessors, (1799), 150 states have call successors, (150), 111 states have call predecessors, (150), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-11-21 14:05:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2137 transitions. [2022-11-21 14:05:12,159 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2137 transitions. Word has length 65 [2022-11-21 14:05:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:12,160 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2137 transitions. [2022-11-21 14:05:12,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 14:05:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2137 transitions. [2022-11-21 14:05:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:12,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:12,162 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 14:05:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:05:12,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash 880048655, now seen corresponding path program 1 times [2022-11-21 14:05:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:12,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287222562] [2022-11-21 14:05:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:12,319 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 14:05:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287222562] [2022-11-21 14:05:12,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287222562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:12,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:12,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:05:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710025353] [2022-11-21 14:05:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:12,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:05:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:05:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:05:12,322 INFO L87 Difference]: Start difference. First operand 1571 states and 2137 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:14,019 INFO L93 Difference]: Finished difference Result 2862 states and 3810 transitions. [2022-11-21 14:05:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:05:14,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-21 14:05:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:14,028 INFO L225 Difference]: With dead ends: 2862 [2022-11-21 14:05:14,028 INFO L226 Difference]: Without dead ends: 1677 [2022-11-21 14:05:14,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:05:14,032 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 979 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:14,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 2517 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 14:05:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-11-21 14:05:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1601. [2022-11-21 14:05:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1313 states have (on average 1.3823305407463824) internal successors, (1815), 1336 states have internal predecessors, (1815), 150 states have call successors, (150), 111 states have call predecessors, (150), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-11-21 14:05:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2159 transitions. [2022-11-21 14:05:14,167 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2159 transitions. Word has length 65 [2022-11-21 14:05:14,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:14,167 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2159 transitions. [2022-11-21 14:05:14,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2159 transitions. [2022-11-21 14:05:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:14,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:14,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:05:14,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2028715247, now seen corresponding path program 1 times [2022-11-21 14:05:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:14,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499222148] [2022-11-21 14:05:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:14,340 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 14:05:14,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499222148] [2022-11-21 14:05:14,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499222148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:14,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:14,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:05:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955565656] [2022-11-21 14:05:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:14,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:05:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:05:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:05:14,343 INFO L87 Difference]: Start difference. First operand 1601 states and 2159 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:15,818 INFO L93 Difference]: Finished difference Result 2856 states and 3706 transitions. [2022-11-21 14:05:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:05:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-21 14:05:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:15,829 INFO L225 Difference]: With dead ends: 2856 [2022-11-21 14:05:15,829 INFO L226 Difference]: Without dead ends: 1864 [2022-11-21 14:05:15,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-21 14:05:15,835 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1783 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:15,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1767 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 14:05:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-21 14:05:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1543. [2022-11-21 14:05:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1271 states have (on average 1.3800157356412275) internal successors, (1754), 1289 states have internal predecessors, (1754), 144 states have call successors, (144), 106 states have call predecessors, (144), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-11-21 14:05:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2077 transitions. [2022-11-21 14:05:15,954 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2077 transitions. Word has length 65 [2022-11-21 14:05:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:15,955 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2077 transitions. [2022-11-21 14:05:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2077 transitions. [2022-11-21 14:05:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:05:15,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:15,959 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 14:05:15,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:05:15,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2132238543, now seen corresponding path program 1 times [2022-11-21 14:05:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841967162] [2022-11-21 14:05:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,101 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 14:05:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841967162] [2022-11-21 14:05:16,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841967162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:16,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:16,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:05:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16002330] [2022-11-21 14:05:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:05:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:05:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:05:16,104 INFO L87 Difference]: Start difference. First operand 1543 states and 2077 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:17,204 INFO L93 Difference]: Finished difference Result 3882 states and 5038 transitions. [2022-11-21 14:05:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:05:17,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-21 14:05:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:17,216 INFO L225 Difference]: With dead ends: 3882 [2022-11-21 14:05:17,216 INFO L226 Difference]: Without dead ends: 2726 [2022-11-21 14:05:17,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:05:17,220 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1406 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:17,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1741 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:05:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-11-21 14:05:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2606. [2022-11-21 14:05:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2091 states have (on average 1.31324725011956) internal successors, (2746), 2126 states have internal predecessors, (2746), 263 states have call successors, (263), 205 states have call predecessors, (263), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-11-21 14:05:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3379 transitions. [2022-11-21 14:05:17,444 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3379 transitions. Word has length 65 [2022-11-21 14:05:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:17,445 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3379 transitions. [2022-11-21 14:05:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 14:05:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3379 transitions. [2022-11-21 14:05:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 14:05:17,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:17,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:17,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:05:17,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1937549811, now seen corresponding path program 1 times [2022-11-21 14:05:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:17,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691668356] [2022-11-21 14:05:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:17,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:17,549 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 14:05:17,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:17,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691668356] [2022-11-21 14:05:17,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691668356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:17,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:17,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050410556] [2022-11-21 14:05:17,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:17,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:17,552 INFO L87 Difference]: Start difference. First operand 2606 states and 3379 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:18,764 INFO L93 Difference]: Finished difference Result 5922 states and 7524 transitions. [2022-11-21 14:05:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:05:18,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-21 14:05:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:18,785 INFO L225 Difference]: With dead ends: 5922 [2022-11-21 14:05:18,786 INFO L226 Difference]: Without dead ends: 3708 [2022-11-21 14:05:18,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:05:18,793 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 835 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:18,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1726 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 14:05:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2022-11-21 14:05:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3440. [2022-11-21 14:05:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 2739 states have (on average 1.2928075940124133) internal successors, (3541), 2779 states have internal predecessors, (3541), 355 states have call successors, (355), 285 states have call predecessors, (355), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-11-21 14:05:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4380 transitions. [2022-11-21 14:05:19,079 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4380 transitions. Word has length 66 [2022-11-21 14:05:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:19,080 INFO L495 AbstractCegarLoop]: Abstraction has 3440 states and 4380 transitions. [2022-11-21 14:05:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4380 transitions. [2022-11-21 14:05:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 14:05:19,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:19,082 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 14:05:19,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:05:19,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:19,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1977597300, now seen corresponding path program 1 times [2022-11-21 14:05:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:19,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974295703] [2022-11-21 14:05:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:19,165 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 14:05:19,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:19,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974295703] [2022-11-21 14:05:19,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974295703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:19,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:19,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717151672] [2022-11-21 14:05:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:19,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:19,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:19,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:19,169 INFO L87 Difference]: Start difference. First operand 3440 states and 4380 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:20,125 INFO L93 Difference]: Finished difference Result 7312 states and 9154 transitions. [2022-11-21 14:05:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:05:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-21 14:05:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:20,147 INFO L225 Difference]: With dead ends: 7312 [2022-11-21 14:05:20,147 INFO L226 Difference]: Without dead ends: 4262 [2022-11-21 14:05:20,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:05:20,156 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1727 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 1138 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:05:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2022-11-21 14:05:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 3994. [2022-11-21 14:05:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3179 states have (on average 1.2837370242214532) internal successors, (4081), 3223 states have internal predecessors, (4081), 411 states have call successors, (411), 335 states have call predecessors, (411), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-11-21 14:05:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5049 transitions. [2022-11-21 14:05:20,486 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5049 transitions. Word has length 72 [2022-11-21 14:05:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:20,486 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5049 transitions. [2022-11-21 14:05:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 14:05:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5049 transitions. [2022-11-21 14:05:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 14:05:20,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:20,488 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 14:05:20,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:05:20,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1692903955, now seen corresponding path program 1 times [2022-11-21 14:05:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:20,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768863305] [2022-11-21 14:05:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:20,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768863305] [2022-11-21 14:05:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768863305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:20,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:05:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38487472] [2022-11-21 14:05:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:05:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:05:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:05:20,617 INFO L87 Difference]: Start difference. First operand 3994 states and 5049 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 14:05:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:21,930 INFO L93 Difference]: Finished difference Result 5080 states and 6344 transitions. [2022-11-21 14:05:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:05:21,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-21 14:05:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:21,951 INFO L225 Difference]: With dead ends: 5080 [2022-11-21 14:05:21,951 INFO L226 Difference]: Without dead ends: 5077 [2022-11-21 14:05:21,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:05:21,955 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2068 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:21,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1448 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:05:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-11-21 14:05:22,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 4456. [2022-11-21 14:05:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3534 states have (on average 1.272495755517827) internal successors, (4497), 3581 states have internal predecessors, (4497), 461 states have call successors, (461), 379 states have call predecessors, (461), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-11-21 14:05:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5592 transitions. [2022-11-21 14:05:22,351 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5592 transitions. Word has length 73 [2022-11-21 14:05:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:22,351 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 5592 transitions. [2022-11-21 14:05:22,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 14:05:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5592 transitions. [2022-11-21 14:05:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 14:05:22,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:22,355 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 14:05:22,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:05:22,355 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -941848842, now seen corresponding path program 1 times [2022-11-21 14:05:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:22,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68371066] [2022-11-21 14:05:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:22,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:22,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68371066] [2022-11-21 14:05:22,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68371066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:22,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296592726] [2022-11-21 14:05:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:22,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:22,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:22,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:22,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 14:05:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:05:22,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:23,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:23,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296592726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:05:23,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:05:23,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-21 14:05:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550510619] [2022-11-21 14:05:23,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:23,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:05:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:05:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:05:23,365 INFO L87 Difference]: Start difference. First operand 4456 states and 5592 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-21 14:05:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:26,085 INFO L93 Difference]: Finished difference Result 8774 states and 10801 transitions. [2022-11-21 14:05:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 14:05:26,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-21 14:05:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:26,125 INFO L225 Difference]: With dead ends: 8774 [2022-11-21 14:05:26,125 INFO L226 Difference]: Without dead ends: 8771 [2022-11-21 14:05:26,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-21 14:05:26,130 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2949 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:26,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 2077 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 14:05:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8771 states. [2022-11-21 14:05:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8771 to 7873. [2022-11-21 14:05:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7873 states, 6209 states have (on average 1.2530198099532937) internal successors, (7780), 6291 states have internal predecessors, (7780), 820 states have call successors, (820), 693 states have call predecessors, (820), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-11-21 14:05:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 9735 transitions. [2022-11-21 14:05:26,917 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 9735 transitions. Word has length 74 [2022-11-21 14:05:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:26,917 INFO L495 AbstractCegarLoop]: Abstraction has 7873 states and 9735 transitions. [2022-11-21 14:05:26,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-21 14:05:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 9735 transitions. [2022-11-21 14:05:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 14:05:26,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:26,920 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-21 14:05:26,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 14:05:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:27,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1219556691, now seen corresponding path program 2 times [2022-11-21 14:05:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062355031] [2022-11-21 14:05:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:27,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:27,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062355031] [2022-11-21 14:05:27,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062355031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:27,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:27,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99385072] [2022-11-21 14:05:27,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:27,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:27,217 INFO L87 Difference]: Start difference. First operand 7873 states and 9735 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 14:05:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:28,480 INFO L93 Difference]: Finished difference Result 10467 states and 12944 transitions. [2022-11-21 14:05:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:05:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-21 14:05:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:28,519 INFO L225 Difference]: With dead ends: 10467 [2022-11-21 14:05:28,519 INFO L226 Difference]: Without dead ends: 4293 [2022-11-21 14:05:28,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:05:28,532 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1636 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:28,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 1172 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:05:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2022-11-21 14:05:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 3285. [2022-11-21 14:05:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 2627 states have (on average 1.2679862961553103) internal successors, (3331), 2655 states have internal predecessors, (3331), 339 states have call successors, (339), 275 states have call predecessors, (339), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-11-21 14:05:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4104 transitions. [2022-11-21 14:05:28,905 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4104 transitions. Word has length 77 [2022-11-21 14:05:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:28,906 INFO L495 AbstractCegarLoop]: Abstraction has 3285 states and 4104 transitions. [2022-11-21 14:05:28,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 14:05:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4104 transitions. [2022-11-21 14:05:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-21 14:05:28,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:28,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 14:05:28,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 167337032, now seen corresponding path program 1 times [2022-11-21 14:05:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555174393] [2022-11-21 14:05:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:05:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 14:05:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:29,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555174393] [2022-11-21 14:05:29,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555174393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:29,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:29,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 14:05:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653358071] [2022-11-21 14:05:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:05:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:05:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:05:29,046 INFO L87 Difference]: Start difference. First operand 3285 states and 4104 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 14:05:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:31,098 INFO L93 Difference]: Finished difference Result 9069 states and 11101 transitions. [2022-11-21 14:05:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 14:05:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-21 14:05:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:31,118 INFO L225 Difference]: With dead ends: 9069 [2022-11-21 14:05:31,119 INFO L226 Difference]: Without dead ends: 5371 [2022-11-21 14:05:31,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-21 14:05:31,127 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1510 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:31,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1849 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 14:05:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2022-11-21 14:05:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 5111. [2022-11-21 14:05:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4018 states have (on average 1.2297162767546044) internal successors, (4941), 4083 states have internal predecessors, (4941), 539 states have call successors, (539), 447 states have call predecessors, (539), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-11-21 14:05:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 6264 transitions. [2022-11-21 14:05:31,689 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 6264 transitions. Word has length 84 [2022-11-21 14:05:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:31,690 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 6264 transitions. [2022-11-21 14:05:31,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 14:05:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 6264 transitions. [2022-11-21 14:05:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 14:05:31,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:31,694 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:31,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 14:05:31,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash -332961557, now seen corresponding path program 1 times [2022-11-21 14:05:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:31,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183394016] [2022-11-21 14:05:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:31,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 14:05:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 14:05:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183394016] [2022-11-21 14:05:31,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183394016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:31,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:31,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:05:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563646240] [2022-11-21 14:05:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:05:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:05:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:05:31,863 INFO L87 Difference]: Start difference. First operand 5111 states and 6264 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 14:05:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:33,949 INFO L93 Difference]: Finished difference Result 8471 states and 10282 transitions. [2022-11-21 14:05:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 14:05:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-21 14:05:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:33,963 INFO L225 Difference]: With dead ends: 8471 [2022-11-21 14:05:33,963 INFO L226 Difference]: Without dead ends: 4272 [2022-11-21 14:05:33,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-21 14:05:33,974 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2392 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:33,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 2198 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 14:05:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-11-21 14:05:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3851. [2022-11-21 14:05:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3024 states have (on average 1.2218915343915344) internal successors, (3695), 3077 states have internal predecessors, (3695), 404 states have call successors, (404), 329 states have call predecessors, (404), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-11-21 14:05:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 4652 transitions. [2022-11-21 14:05:34,367 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 4652 transitions. Word has length 93 [2022-11-21 14:05:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:34,367 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 4652 transitions. [2022-11-21 14:05:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-21 14:05:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 4652 transitions. [2022-11-21 14:05:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 14:05:34,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:34,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 14:05:34,372 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1881468012, now seen corresponding path program 1 times [2022-11-21 14:05:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:34,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316738654] [2022-11-21 14:05:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:05:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 14:05:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 14:05:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 14:05:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:05:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 14:05:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 14:05:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-21 14:05:34,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316738654] [2022-11-21 14:05:34,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316738654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96445564] [2022-11-21 14:05:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:34,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:34,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:34,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:34,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:05:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:34,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 14:05:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 14:05:34,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:05:34,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96445564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:34,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:05:34,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-21 14:05:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823832806] [2022-11-21 14:05:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:34,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:05:34,830 INFO L87 Difference]: Start difference. First operand 3851 states and 4652 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 14:05:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:35,063 INFO L93 Difference]: Finished difference Result 5726 states and 6891 transitions. [2022-11-21 14:05:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:05:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-11-21 14:05:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:35,071 INFO L225 Difference]: With dead ends: 5726 [2022-11-21 14:05:35,072 INFO L226 Difference]: Without dead ends: 2267 [2022-11-21 14:05:35,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:05:35,079 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 34 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:35,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3580 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:05:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-21 14:05:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2145. [2022-11-21 14:05:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1764 states have (on average 1.25) internal successors, (2205), 1780 states have internal predecessors, (2205), 193 states have call successors, (193), 143 states have call predecessors, (193), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-11-21 14:05:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2658 transitions. [2022-11-21 14:05:35,242 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2658 transitions. Word has length 145 [2022-11-21 14:05:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:35,242 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 2658 transitions. [2022-11-21 14:05:35,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 14:05:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2658 transitions. [2022-11-21 14:05:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 14:05:35,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:35,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:35,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 14:05:35,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:35,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2075067146, now seen corresponding path program 1 times [2022-11-21 14:05:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:35,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83957348] [2022-11-21 14:05:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 14:05:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:05:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 14:05:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:05:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 14:05:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 14:05:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 14:05:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-21 14:05:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:35,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83957348] [2022-11-21 14:05:35,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83957348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:35,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:35,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:35,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103494634] [2022-11-21 14:05:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:35,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:35,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:35,557 INFO L87 Difference]: Start difference. First operand 2145 states and 2658 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:05:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:36,712 INFO L93 Difference]: Finished difference Result 2193 states and 2708 transitions. [2022-11-21 14:05:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:05:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-11-21 14:05:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:36,721 INFO L225 Difference]: With dead ends: 2193 [2022-11-21 14:05:36,721 INFO L226 Difference]: Without dead ends: 1819 [2022-11-21 14:05:36,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:05:36,724 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 755 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:36,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1660 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:05:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-11-21 14:05:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1774. [2022-11-21 14:05:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1477 states have (on average 1.2721733243060258) internal successors, (1879), 1490 states have internal predecessors, (1879), 152 states have call successors, (152), 108 states have call predecessors, (152), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-11-21 14:05:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2236 transitions. [2022-11-21 14:05:37,001 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2236 transitions. Word has length 147 [2022-11-21 14:05:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:37,002 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2236 transitions. [2022-11-21 14:05:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 14:05:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2236 transitions. [2022-11-21 14:05:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 14:05:37,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:37,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 14:05:37,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1656557558, now seen corresponding path program 1 times [2022-11-21 14:05:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:37,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277036392] [2022-11-21 14:05:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:05:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 14:05:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:05:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 14:05:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 14:05:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-21 14:05:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-21 14:05:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:37,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277036392] [2022-11-21 14:05:37,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277036392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:37,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:37,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:05:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503440198] [2022-11-21 14:05:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:05:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:05:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:05:37,164 INFO L87 Difference]: Start difference. First operand 1774 states and 2236 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 14:05:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:38,505 INFO L93 Difference]: Finished difference Result 3040 states and 3735 transitions. [2022-11-21 14:05:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:05:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-11-21 14:05:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:38,513 INFO L225 Difference]: With dead ends: 3040 [2022-11-21 14:05:38,513 INFO L226 Difference]: Without dead ends: 1747 [2022-11-21 14:05:38,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:05:38,517 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 682 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:38,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2156 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 14:05:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-11-21 14:05:38,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1663. [2022-11-21 14:05:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1390 states have (on average 1.2820143884892086) internal successors, (1782), 1403 states have internal predecessors, (1782), 140 states have call successors, (140), 98 states have call predecessors, (140), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-11-21 14:05:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2109 transitions. [2022-11-21 14:05:38,696 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2109 transitions. Word has length 159 [2022-11-21 14:05:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:38,697 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2109 transitions. [2022-11-21 14:05:38,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 14:05:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2109 transitions. [2022-11-21 14:05:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-21 14:05:38,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:38,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 14:05:38,702 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash -619024488, now seen corresponding path program 1 times [2022-11-21 14:05:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:38,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395087763] [2022-11-21 14:05:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 14:05:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 14:05:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 14:05:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 14:05:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 14:05:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 14:05:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-21 14:05:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 14:05:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 14:05:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 14:05:39,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395087763] [2022-11-21 14:05:39,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395087763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323413002] [2022-11-21 14:05:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:39,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:39,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:39,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 14:05:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:39,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:05:39,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-21 14:05:39,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 14:05:39,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323413002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:05:39,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:05:39,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-11-21 14:05:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098973900] [2022-11-21 14:05:39,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:39,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:05:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:05:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:05:39,760 INFO L87 Difference]: Start difference. First operand 1663 states and 2109 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-21 14:05:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:41,783 INFO L93 Difference]: Finished difference Result 3399 states and 4248 transitions. [2022-11-21 14:05:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 14:05:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-11-21 14:05:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:41,791 INFO L225 Difference]: With dead ends: 3399 [2022-11-21 14:05:41,791 INFO L226 Difference]: Without dead ends: 2054 [2022-11-21 14:05:41,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-11-21 14:05:41,796 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2261 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:41,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 2439 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 14:05:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-21 14:05:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1941. [2022-11-21 14:05:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2460765850596358) internal successors, (1985), 1607 states have internal predecessors, (1985), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-21 14:05:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2421 transitions. [2022-11-21 14:05:41,993 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2421 transitions. Word has length 162 [2022-11-21 14:05:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:41,994 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2421 transitions. [2022-11-21 14:05:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-21 14:05:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2421 transitions. [2022-11-21 14:05:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:05:41,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:41,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:42,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 14:05:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfebb45-e11f-4c7a-95af-751cd05c2c23/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 14:05:42,206 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1512428841, now seen corresponding path program 1 times [2022-11-21 14:05:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:42,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026255113] [2022-11-21 14:05:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:05:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:05:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:05:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:05:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:42,382 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 14:05:42,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:42,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026255113] [2022-11-21 14:05:42,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026255113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:42,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:42,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:05:42,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246113646] [2022-11-21 14:05:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:42,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:05:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:05:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:05:42,385 INFO L87 Difference]: Start difference. First operand 1941 states and 2421 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:45,046 INFO L93 Difference]: Finished difference Result 2451 states and 3247 transitions. [2022-11-21 14:05:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:05:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:05:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:45,053 INFO L225 Difference]: With dead ends: 2451 [2022-11-21 14:05:45,054 INFO L226 Difference]: Without dead ends: 2083 [2022-11-21 14:05:45,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:05:45,057 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1133 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:45,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 972 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 14:05:45,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-21 14:05:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1941. [2022-11-21 14:05:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2454488386691775) internal successors, (1984), 1607 states have internal predecessors, (1984), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-21 14:05:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2420 transitions. [2022-11-21 14:05:45,444 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2420 transitions. Word has length 178 [2022-11-21 14:05:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:45,445 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2420 transitions. [2022-11-21 14:05:45,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2420 transitions. [2022-11-21 14:05:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:05:45,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:45,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:45,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 14:05:45,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash -104702891, now seen corresponding path program 1 times [2022-11-21 14:05:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:45,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428978161] [2022-11-21 14:05:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:05:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:05:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:05:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:05:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:45,630 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 14:05:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:45,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428978161] [2022-11-21 14:05:45,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428978161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:45,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:45,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:05:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362492353] [2022-11-21 14:05:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:05:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:05:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:05:45,633 INFO L87 Difference]: Start difference. First operand 1941 states and 2420 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:48,452 INFO L93 Difference]: Finished difference Result 2443 states and 3230 transitions. [2022-11-21 14:05:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:05:48,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:05:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:48,460 INFO L225 Difference]: With dead ends: 2443 [2022-11-21 14:05:48,460 INFO L226 Difference]: Without dead ends: 2083 [2022-11-21 14:05:48,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:05:48,463 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1124 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:48,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 970 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 14:05:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-21 14:05:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1941. [2022-11-21 14:05:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2448210922787193) internal successors, (1983), 1607 states have internal predecessors, (1983), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-21 14:05:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2419 transitions. [2022-11-21 14:05:48,830 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2419 transitions. Word has length 178 [2022-11-21 14:05:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2419 transitions. [2022-11-21 14:05:48,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2419 transitions. [2022-11-21 14:05:48,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:05:48,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:48,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:48,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 14:05:48,835 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash -772084781, now seen corresponding path program 1 times [2022-11-21 14:05:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:48,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508301405] [2022-11-21 14:05:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:05:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:05:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:05:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:05:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:49,065 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 14:05:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:49,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508301405] [2022-11-21 14:05:49,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508301405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:49,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:49,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:05:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510389608] [2022-11-21 14:05:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:05:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:05:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:05:49,069 INFO L87 Difference]: Start difference. First operand 1941 states and 2419 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:53,543 INFO L93 Difference]: Finished difference Result 2957 states and 4066 transitions. [2022-11-21 14:05:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:05:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:05:53,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:53,558 INFO L225 Difference]: With dead ends: 2957 [2022-11-21 14:05:53,558 INFO L226 Difference]: Without dead ends: 2600 [2022-11-21 14:05:53,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:05:53,561 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1781 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1508 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 14:05:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-21 14:05:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2317. [2022-11-21 14:05:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1941 states have (on average 1.3080886141164347) internal successors, (2539), 1956 states have internal predecessors, (2539), 201 states have call successors, (201), 142 states have call predecessors, (201), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-11-21 14:05:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3020 transitions. [2022-11-21 14:05:54,043 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3020 transitions. Word has length 178 [2022-11-21 14:05:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:54,044 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 3020 transitions. [2022-11-21 14:05:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3020 transitions. [2022-11-21 14:05:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:05:54,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:54,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:05:54,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 14:05:54,049 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1648070057, now seen corresponding path program 1 times [2022-11-21 14:05:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:54,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566205031] [2022-11-21 14:05:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:54,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:05:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:05:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:05:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:05:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:05:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:54,341 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 14:05:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:54,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566205031] [2022-11-21 14:05:54,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566205031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:54,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:54,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:05:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276889335] [2022-11-21 14:05:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:05:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:05:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:05:54,344 INFO L87 Difference]: Start difference. First operand 2317 states and 3020 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:05:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:59,820 INFO L93 Difference]: Finished difference Result 3872 states and 5546 transitions. [2022-11-21 14:05:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:05:59,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:05:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:59,836 INFO L225 Difference]: With dead ends: 3872 [2022-11-21 14:05:59,836 INFO L226 Difference]: Without dead ends: 3139 [2022-11-21 14:05:59,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:05:59,842 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1822 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:59,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 2690 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-21 14:05:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-21 14:06:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2667. [2022-11-21 14:06:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.344675209898365) internal successors, (3043), 2279 states have internal predecessors, (3043), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-21 14:06:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3568 transitions. [2022-11-21 14:06:00,397 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3568 transitions. Word has length 178 [2022-11-21 14:06:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:00,397 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3568 transitions. [2022-11-21 14:06:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3568 transitions. [2022-11-21 14:06:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:00,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:00,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:00,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 14:06:00,404 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1241705561, now seen corresponding path program 1 times [2022-11-21 14:06:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:00,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440085523] [2022-11-21 14:06:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:00,645 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 14:06:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:00,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440085523] [2022-11-21 14:06:00,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440085523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:00,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:00,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182490760] [2022-11-21 14:06:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:00,648 INFO L87 Difference]: Start difference. First operand 2667 states and 3568 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:03,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:03,825 INFO L93 Difference]: Finished difference Result 4240 states and 6134 transitions. [2022-11-21 14:06:03,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:03,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:03,836 INFO L225 Difference]: With dead ends: 4240 [2022-11-21 14:06:03,836 INFO L226 Difference]: Without dead ends: 3157 [2022-11-21 14:06:03,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:03,841 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1349 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:03,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1496 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 14:06:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-11-21 14:06:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2667. [2022-11-21 14:06:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.3433495360141405) internal successors, (3040), 2279 states have internal predecessors, (3040), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-21 14:06:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3565 transitions. [2022-11-21 14:06:04,379 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3565 transitions. Word has length 178 [2022-11-21 14:06:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:04,379 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3565 transitions. [2022-11-21 14:06:04,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3565 transitions. [2022-11-21 14:06:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:04,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:04,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 14:06:04,384 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1158927849, now seen corresponding path program 1 times [2022-11-21 14:06:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955228010] [2022-11-21 14:06:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:04,669 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 14:06:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:04,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955228010] [2022-11-21 14:06:04,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955228010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:04,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:04,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696423023] [2022-11-21 14:06:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:04,673 INFO L87 Difference]: Start difference. First operand 2667 states and 3565 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:07,969 INFO L93 Difference]: Finished difference Result 4236 states and 6117 transitions. [2022-11-21 14:06:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:07,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:07,981 INFO L225 Difference]: With dead ends: 4236 [2022-11-21 14:06:07,981 INFO L226 Difference]: Without dead ends: 3153 [2022-11-21 14:06:07,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:07,988 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1347 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:07,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1496 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 14:06:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-11-21 14:06:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2667. [2022-11-21 14:06:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.342023862129916) internal successors, (3037), 2279 states have internal predecessors, (3037), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-21 14:06:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3562 transitions. [2022-11-21 14:06:08,571 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3562 transitions. Word has length 178 [2022-11-21 14:06:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:08,571 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3562 transitions. [2022-11-21 14:06:08,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3562 transitions. [2022-11-21 14:06:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:08,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:08,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 14:06:08,576 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 287653017, now seen corresponding path program 1 times [2022-11-21 14:06:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774330634] [2022-11-21 14:06:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:08,862 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 14:06:08,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774330634] [2022-11-21 14:06:08,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774330634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:08,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:08,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:08,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940554895] [2022-11-21 14:06:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:08,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:08,864 INFO L87 Difference]: Start difference. First operand 2667 states and 3562 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:14,533 INFO L93 Difference]: Finished difference Result 5211 states and 7658 transitions. [2022-11-21 14:06:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:06:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:14,546 INFO L225 Difference]: With dead ends: 5211 [2022-11-21 14:06:14,546 INFO L226 Difference]: Without dead ends: 4128 [2022-11-21 14:06:14,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:06:14,552 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1803 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:14,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 2688 Invalid, 3843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 14:06:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-11-21 14:06:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3376. [2022-11-21 14:06:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2916 states have (on average 1.3902606310013716) internal successors, (4054), 2934 states have internal predecessors, (4054), 264 states have call successors, (264), 160 states have call predecessors, (264), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-11-21 14:06:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4671 transitions. [2022-11-21 14:06:15,092 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4671 transitions. Word has length 178 [2022-11-21 14:06:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:15,092 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4671 transitions. [2022-11-21 14:06:15,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4671 transitions. [2022-11-21 14:06:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:15,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:15,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 14:06:15,096 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -635514409, now seen corresponding path program 1 times [2022-11-21 14:06:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393796259] [2022-11-21 14:06:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:15,332 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 14:06:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393796259] [2022-11-21 14:06:15,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393796259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:15,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:15,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513028514] [2022-11-21 14:06:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:15,335 INFO L87 Difference]: Start difference. First operand 3376 states and 4671 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:18,332 INFO L93 Difference]: Finished difference Result 5908 states and 8756 transitions. [2022-11-21 14:06:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:18,346 INFO L225 Difference]: With dead ends: 5908 [2022-11-21 14:06:18,346 INFO L226 Difference]: Without dead ends: 4116 [2022-11-21 14:06:18,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:18,353 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1641 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:18,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 1250 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 14:06:18,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2022-11-21 14:06:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3376. [2022-11-21 14:06:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2916 states have (on average 1.3885459533607682) internal successors, (4049), 2934 states have internal predecessors, (4049), 264 states have call successors, (264), 160 states have call predecessors, (264), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-11-21 14:06:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4666 transitions. [2022-11-21 14:06:19,053 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4666 transitions. Word has length 178 [2022-11-21 14:06:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:19,053 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4666 transitions. [2022-11-21 14:06:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4666 transitions. [2022-11-21 14:06:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:19,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:19,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:19,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 14:06:19,057 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash -249652007, now seen corresponding path program 1 times [2022-11-21 14:06:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:19,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876292200] [2022-11-21 14:06:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,315 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 14:06:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876292200] [2022-11-21 14:06:19,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876292200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:19,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:19,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180585178] [2022-11-21 14:06:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:19,317 INFO L87 Difference]: Start difference. First operand 3376 states and 4666 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:25,264 INFO L93 Difference]: Finished difference Result 7804 states and 11735 transitions. [2022-11-21 14:06:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:06:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:25,283 INFO L225 Difference]: With dead ends: 7804 [2022-11-21 14:06:25,283 INFO L226 Difference]: Without dead ends: 6012 [2022-11-21 14:06:25,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:06:25,290 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1795 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:25,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 2688 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 14:06:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2022-11-21 14:06:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 4798. [2022-11-21 14:06:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.438949361097965) internal successors, (6081), 4248 states have internal predecessors, (6081), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-21 14:06:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6888 transitions. [2022-11-21 14:06:26,355 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6888 transitions. Word has length 178 [2022-11-21 14:06:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:26,355 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6888 transitions. [2022-11-21 14:06:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6888 transitions. [2022-11-21 14:06:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:26,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:26,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 14:06:26,359 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -514299497, now seen corresponding path program 1 times [2022-11-21 14:06:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638091225] [2022-11-21 14:06:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,589 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 14:06:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:26,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638091225] [2022-11-21 14:06:26,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638091225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:26,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:26,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312788773] [2022-11-21 14:06:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:26,592 INFO L87 Difference]: Start difference. First operand 4798 states and 6888 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:30,270 INFO L93 Difference]: Finished difference Result 9248 states and 14027 transitions. [2022-11-21 14:06:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:30,290 INFO L225 Difference]: With dead ends: 9248 [2022-11-21 14:06:30,290 INFO L226 Difference]: Without dead ends: 6034 [2022-11-21 14:06:30,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:30,300 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1350 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:30,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1496 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 14:06:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2022-11-21 14:06:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 4798. [2022-11-21 14:06:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.436819687647894) internal successors, (6072), 4248 states have internal predecessors, (6072), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-21 14:06:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6879 transitions. [2022-11-21 14:06:31,203 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6879 transitions. Word has length 178 [2022-11-21 14:06:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:31,204 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6879 transitions. [2022-11-21 14:06:31,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6879 transitions. [2022-11-21 14:06:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:31,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:31,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:31,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 14:06:31,208 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1416826137, now seen corresponding path program 1 times [2022-11-21 14:06:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:31,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207631208] [2022-11-21 14:06:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:31,443 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 14:06:31,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:31,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207631208] [2022-11-21 14:06:31,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207631208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:31,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:31,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:31,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440836302] [2022-11-21 14:06:31,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:31,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:31,446 INFO L87 Difference]: Start difference. First operand 4798 states and 6879 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:35,463 INFO L93 Difference]: Finished difference Result 9228 states and 13960 transitions. [2022-11-21 14:06:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:35,479 INFO L225 Difference]: With dead ends: 9228 [2022-11-21 14:06:35,479 INFO L226 Difference]: Without dead ends: 6014 [2022-11-21 14:06:35,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:35,486 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1347 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:35,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1496 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 14:06:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-11-21 14:06:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 4798. [2022-11-21 14:06:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.434690014197823) internal successors, (6063), 4248 states have internal predecessors, (6063), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-21 14:06:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6870 transitions. [2022-11-21 14:06:36,359 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6870 transitions. Word has length 178 [2022-11-21 14:06:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:36,359 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6870 transitions. [2022-11-21 14:06:36,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6870 transitions. [2022-11-21 14:06:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:36,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:36,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 14:06:36,363 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -981161701, now seen corresponding path program 1 times [2022-11-21 14:06:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784432048] [2022-11-21 14:06:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:36,639 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 14:06:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:36,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784432048] [2022-11-21 14:06:36,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784432048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:36,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:36,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501066075] [2022-11-21 14:06:36,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:36,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:36,641 INFO L87 Difference]: Start difference. First operand 4798 states and 6870 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:40,130 INFO L93 Difference]: Finished difference Result 9218 states and 13913 transitions. [2022-11-21 14:06:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:40,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:40,141 INFO L225 Difference]: With dead ends: 9218 [2022-11-21 14:06:40,141 INFO L226 Difference]: Without dead ends: 6004 [2022-11-21 14:06:40,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:40,146 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1562 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:40,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1251 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 14:06:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2022-11-21 14:06:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 4798. [2022-11-21 14:06:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.432560340747752) internal successors, (6054), 4248 states have internal predecessors, (6054), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-21 14:06:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6861 transitions. [2022-11-21 14:06:40,974 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6861 transitions. Word has length 178 [2022-11-21 14:06:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:40,975 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6861 transitions. [2022-11-21 14:06:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:40,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6861 transitions. [2022-11-21 14:06:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:40,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:40,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 14:06:40,978 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -642874151, now seen corresponding path program 1 times [2022-11-21 14:06:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:40,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063405296] [2022-11-21 14:06:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:41,249 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 14:06:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:41,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063405296] [2022-11-21 14:06:41,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063405296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:41,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:41,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068865145] [2022-11-21 14:06:41,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:41,252 INFO L87 Difference]: Start difference. First operand 4798 states and 6861 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:48,275 INFO L93 Difference]: Finished difference Result 12960 states and 19739 transitions. [2022-11-21 14:06:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:06:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:48,303 INFO L225 Difference]: With dead ends: 12960 [2022-11-21 14:06:48,303 INFO L226 Difference]: Without dead ends: 9746 [2022-11-21 14:06:48,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:06:48,313 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1775 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:48,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 2688 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 14:06:48,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2022-11-21 14:06:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 7683. [2022-11-21 14:06:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 6887 states have (on average 1.4735007986060693) internal successors, (10148), 6917 states have internal predecessors, (10148), 516 states have call successors, (516), 232 states have call predecessors, (516), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-11-21 14:06:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11353 transitions. [2022-11-21 14:06:49,905 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11353 transitions. Word has length 178 [2022-11-21 14:06:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:49,906 INFO L495 AbstractCegarLoop]: Abstraction has 7683 states and 11353 transitions. [2022-11-21 14:06:49,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11353 transitions. [2022-11-21 14:06:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:49,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:49,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:49,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 14:06:49,917 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash -216319653, now seen corresponding path program 1 times [2022-11-21 14:06:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:49,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383779240] [2022-11-21 14:06:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:50,222 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 14:06:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:50,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383779240] [2022-11-21 14:06:50,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383779240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:50,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:50,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389589425] [2022-11-21 14:06:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:50,225 INFO L87 Difference]: Start difference. First operand 7683 states and 11353 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:55,137 INFO L93 Difference]: Finished difference Result 15904 states and 24420 transitions. [2022-11-21 14:06:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:06:55,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:06:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:55,174 INFO L225 Difference]: With dead ends: 15904 [2022-11-21 14:06:55,174 INFO L226 Difference]: Without dead ends: 9805 [2022-11-21 14:06:55,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:55,193 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1342 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:55,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1494 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 14:06:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2022-11-21 14:06:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 7683. [2022-11-21 14:06:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 6887 states have (on average 1.471032379846087) internal successors, (10131), 6917 states have internal predecessors, (10131), 516 states have call successors, (516), 232 states have call predecessors, (516), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-11-21 14:06:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11336 transitions. [2022-11-21 14:06:56,867 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11336 transitions. Word has length 178 [2022-11-21 14:06:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:56,868 INFO L495 AbstractCegarLoop]: Abstraction has 7683 states and 11336 transitions. [2022-11-21 14:06:56,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:06:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11336 transitions. [2022-11-21 14:06:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:06:56,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:56,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:56,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 14:06:56,873 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:56,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:56,874 INFO L85 PathProgramCache]: Analyzing trace with hash -756749159, now seen corresponding path program 1 times [2022-11-21 14:06:56,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:56,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832462998] [2022-11-21 14:06:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:56,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:06:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:06:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:57,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:06:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:06:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:06:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:57,129 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 14:06:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:57,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832462998] [2022-11-21 14:06:57,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832462998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:57,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:57,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335833668] [2022-11-21 14:06:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:57,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:57,131 INFO L87 Difference]: Start difference. First operand 7683 states and 11336 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:07:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:08,091 INFO L93 Difference]: Finished difference Result 25977 states and 40055 transitions. [2022-11-21 14:07:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:07:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:07:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:08,133 INFO L225 Difference]: With dead ends: 25977 [2022-11-21 14:07:08,134 INFO L226 Difference]: Without dead ends: 19878 [2022-11-21 14:07:08,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:07:08,152 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2294 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1875 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-21 14:07:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2022-11-21 14:07:11,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 13349. [2022-11-21 14:07:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 12121 states have (on average 1.4988037290652587) internal successors, (18167), 12167 states have internal predecessors, (18167), 836 states have call successors, (836), 328 states have call predecessors, (836), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-11-21 14:07:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 20190 transitions. [2022-11-21 14:07:11,439 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 20190 transitions. Word has length 178 [2022-11-21 14:07:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:11,439 INFO L495 AbstractCegarLoop]: Abstraction has 13349 states and 20190 transitions. [2022-11-21 14:07:11,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:07:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 20190 transitions. [2022-11-21 14:07:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:07:11,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:11,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:11,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 14:07:11,444 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:07:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -912729701, now seen corresponding path program 1 times [2022-11-21 14:07:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:07:11,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340597803] [2022-11-21 14:07:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:07:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:07:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:07:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:07:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:07:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:07:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:11,717 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 14:07:11,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:11,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340597803] [2022-11-21 14:07:11,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340597803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:07:11,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:07:11,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:07:11,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087142949] [2022-11-21 14:07:11,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:07:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:07:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:07:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:07:11,719 INFO L87 Difference]: Start difference. First operand 13349 states and 20190 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:07:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:29,098 INFO L93 Difference]: Finished difference Result 48601 states and 75679 transitions. [2022-11-21 14:07:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:07:29,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-21 14:07:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:29,198 INFO L225 Difference]: With dead ends: 48601 [2022-11-21 14:07:29,198 INFO L226 Difference]: Without dead ends: 36836 [2022-11-21 14:07:29,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:07:29,228 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1869 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:29,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 2678 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 14:07:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36836 states. [2022-11-21 14:07:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36836 to 24742. [2022-11-21 14:07:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24742 states, 22666 states have (on average 1.5166769610870907) internal successors, (34377), 22744 states have internal predecessors, (34377), 1460 states have call successors, (1460), 520 states have call predecessors, (1460), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-11-21 14:07:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24742 states to 24742 states and 38166 transitions. [2022-11-21 14:07:35,398 INFO L78 Accepts]: Start accepts. Automaton has 24742 states and 38166 transitions. Word has length 178 [2022-11-21 14:07:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:35,399 INFO L495 AbstractCegarLoop]: Abstraction has 24742 states and 38166 transitions. [2022-11-21 14:07:35,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:07:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 24742 states and 38166 transitions. [2022-11-21 14:07:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-21 14:07:35,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:35,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 14:07:35,406 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:07:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -502119335, now seen corresponding path program 1 times [2022-11-21 14:07:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:07:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833072226] [2022-11-21 14:07:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:07:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:07:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 14:07:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:07:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 14:07:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 14:07:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:35,647 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 14:07:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:35,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833072226] [2022-11-21 14:07:35,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833072226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:07:35,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:07:35,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:07:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721637426] [2022-11-21 14:07:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:07:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:07:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:07:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:07:35,650 INFO L87 Difference]: Start difference. First operand 24742 states and 38166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)