./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.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_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/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_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/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_66ed7611-ad5f-442b-a479-19221f757144/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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:46:24,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:46:24,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:46:24,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:46:24,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:46:24,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:46:24,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:46:24,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:46:24,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:46:24,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:46:24,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:46:24,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:46:24,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:46:24,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:46:24,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:46:24,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:46:24,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:46:24,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:46:24,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:46:24,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:46:24,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:46:24,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:46:24,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:46:24,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:46:24,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:46:24,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:46:24,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:46:24,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:46:24,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:46:24,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:46:24,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:46:24,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:46:24,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:46:24,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:46:24,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:46:24,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:46:24,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:46:24,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:46:24,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:46:24,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:46:24,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:46:24,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:46:24,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:46:24,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:46:24,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:46:24,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:46:24,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:46:24,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:46:24,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:46:24,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:46:24,608 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:46:24,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:46:24,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:46:24,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:46:24,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:46:24,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:46:24,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:46:24,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:46:24,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:46:24,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:46:24,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:46:24,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:46:24,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:46:24,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:46:24,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:46:24,613 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_66ed7611-ad5f-442b-a479-19221f757144/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2022-11-21 13:46:24,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:46:24,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:46:24,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:46:24,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:46:24,918 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:46:24,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-11-21 13:46:27,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:46:28,227 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:46:28,227 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-11-21 13:46:28,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/data/e8a2234f3/2b8b9a28819c4066b515693049bead85/FLAG5740b095a [2022-11-21 13:46:28,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/data/e8a2234f3/2b8b9a28819c4066b515693049bead85 [2022-11-21 13:46:28,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:46:28,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:46:28,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:46:28,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:46:28,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:46:28,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:28,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3627a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28, skipping insertion in model container [2022-11-21 13:46:28,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:28,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:46:28,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:46:28,565 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_66ed7611-ad5f-442b-a479-19221f757144/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2022-11-21 13:46:28,676 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_66ed7611-ad5f-442b-a479-19221f757144/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2022-11-21 13:46:28,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:46:28,860 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:46:28,871 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2022-11-21 13:46:28,887 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_66ed7611-ad5f-442b-a479-19221f757144/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2022-11-21 13:46:28,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:46:28,953 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:46:28,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28 WrapperNode [2022-11-21 13:46:28,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:46:28,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:46:28,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:46:28,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:46:28,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:28,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,060 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1020 [2022-11-21 13:46:29,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:46:29,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:46:29,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:46:29,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:46:29,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:46:29,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:46:29,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:46:29,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:46:29,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (1/1) ... [2022-11-21 13:46:29,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:46:29,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:29,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:46:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:46:29,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:46:29,223 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 13:46:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 13:46:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-21 13:46:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-21 13:46:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-21 13:46:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-21 13:46:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-21 13:46:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-21 13:46:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-21 13:46:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-21 13:46:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-21 13:46:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-21 13:46:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-21 13:46:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-21 13:46:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-21 13:46:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-21 13:46:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-21 13:46:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-21 13:46:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-21 13:46:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-21 13:46:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-21 13:46:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-21 13:46:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:46:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-21 13:46:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-21 13:46:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-21 13:46:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-21 13:46:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:46:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:46:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-21 13:46:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-21 13:46:29,422 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:46:29,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:46:30,378 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-21 13:46:30,379 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-21 13:46:30,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:46:30,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:46:30,482 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-21 13:46:30,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:30 BoogieIcfgContainer [2022-11-21 13:46:30,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:46:30,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:46:30,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:46:30,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:46:30,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:46:28" (1/3) ... [2022-11-21 13:46:30,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651846a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:30, skipping insertion in model container [2022-11-21 13:46:30,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:28" (2/3) ... [2022-11-21 13:46:30,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651846a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:30, skipping insertion in model container [2022-11-21 13:46:30,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:30" (3/3) ... [2022-11-21 13:46:30,498 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-11-21 13:46:30,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:46:30,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 13:46:30,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:46:30,620 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;@7fdfe826, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:46:30,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 13:46:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 416 states have (on average 1.6346153846153846) internal successors, (680), 422 states have internal predecessors, (680), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-21 13:46:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:46:30,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:30,649 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 13:46:30,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 805759077, now seen corresponding path program 1 times [2022-11-21 13:46:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:30,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713190409] [2022-11-21 13:46:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:30,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:46:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:46:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:46:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:31,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713190409] [2022-11-21 13:46:31,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713190409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:31,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:31,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:46:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857744398] [2022-11-21 13:46:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:46:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:46:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:46:31,406 INFO L87 Difference]: Start difference. First operand has 474 states, 416 states have (on average 1.6346153846153846) internal successors, (680), 422 states have internal predecessors, (680), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) 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 13:46:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:33,097 INFO L93 Difference]: Finished difference Result 1072 states and 1713 transitions. [2022-11-21 13:46:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:46:33,099 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 13:46:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:33,125 INFO L225 Difference]: With dead ends: 1072 [2022-11-21 13:46:33,125 INFO L226 Difference]: Without dead ends: 615 [2022-11-21 13:46:33,135 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 13:46:33,138 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1234 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:33,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2106 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:46:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-21 13:46:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 576. [2022-11-21 13:46:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 498 states have (on average 1.5240963855421688) internal successors, (759), 504 states have internal predecessors, (759), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2022-11-21 13:46:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 870 transitions. [2022-11-21 13:46:33,239 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 870 transitions. Word has length 65 [2022-11-21 13:46:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:33,240 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 870 transitions. [2022-11-21 13:46:33,240 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 13:46:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 870 transitions. [2022-11-21 13:46:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:46:33,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:33,244 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 13:46:33,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:46:33,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1810319579, now seen corresponding path program 1 times [2022-11-21 13:46:33,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:33,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470411730] [2022-11-21 13:46:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:46:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:46:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:46:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:33,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:33,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470411730] [2022-11-21 13:46:33,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470411730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:33,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:33,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:46:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24533236] [2022-11-21 13:46:33,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:46:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:46:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:46:33,456 INFO L87 Difference]: Start difference. First operand 576 states and 870 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 13:46:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:35,097 INFO L93 Difference]: Finished difference Result 973 states and 1436 transitions. [2022-11-21 13:46:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:46:35,098 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 13:46:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:35,106 INFO L225 Difference]: With dead ends: 973 [2022-11-21 13:46:35,107 INFO L226 Difference]: Without dead ends: 764 [2022-11-21 13:46:35,110 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 13:46:35,112 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1398 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:35,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2433 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 13:46:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-21 13:46:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 688. [2022-11-21 13:46:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 588 states have (on average 1.5051020408163265) internal successors, (885), 596 states have internal predecessors, (885), 67 states have call successors, (67), 28 states have call predecessors, (67), 31 states have return successors, (78), 67 states have call predecessors, (78), 65 states have call successors, (78) [2022-11-21 13:46:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1030 transitions. [2022-11-21 13:46:35,213 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1030 transitions. Word has length 65 [2022-11-21 13:46:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:35,213 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1030 transitions. [2022-11-21 13:46:35,214 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 13:46:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1030 transitions. [2022-11-21 13:46:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:46:35,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:35,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:35,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:46:35,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:35,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash 456061607, now seen corresponding path program 1 times [2022-11-21 13:46:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:35,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238937365] [2022-11-21 13:46:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:46:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:46:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:46:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:35,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:35,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238937365] [2022-11-21 13:46:35,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238937365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:35,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:35,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 13:46:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987845262] [2022-11-21 13:46:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:35,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:46:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:46:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:46:35,387 INFO L87 Difference]: Start difference. First operand 688 states and 1030 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-21 13:46:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:38,053 INFO L93 Difference]: Finished difference Result 2234 states and 3228 transitions. [2022-11-21 13:46:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 13:46:38,054 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-21 13:46:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:38,065 INFO L225 Difference]: With dead ends: 2234 [2022-11-21 13:46:38,065 INFO L226 Difference]: Without dead ends: 1901 [2022-11-21 13:46:38,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:46:38,075 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 4155 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:38,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 2353 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 13:46:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2022-11-21 13:46:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1741. [2022-11-21 13:46:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1436 states have (on average 1.4129526462395543) internal successors, (2029), 1459 states have internal predecessors, (2029), 177 states have call successors, (177), 111 states have call predecessors, (177), 126 states have return successors, (211), 173 states have call predecessors, (211), 175 states have call successors, (211) [2022-11-21 13:46:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2417 transitions. [2022-11-21 13:46:38,249 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2417 transitions. Word has length 65 [2022-11-21 13:46:38,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:38,250 INFO L495 AbstractCegarLoop]: Abstraction has 1741 states and 2417 transitions. [2022-11-21 13:46:38,251 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-21 13:46:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2417 transitions. [2022-11-21 13:46:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 13:46:38,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:38,256 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 13:46:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:46:38,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1798849050, now seen corresponding path program 1 times [2022-11-21 13:46:38,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:38,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23636242] [2022-11-21 13:46:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:46:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:46:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:38,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23636242] [2022-11-21 13:46:38,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23636242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:38,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:38,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:46:38,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001878338] [2022-11-21 13:46:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:38,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:46:38,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:46:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:46:38,478 INFO L87 Difference]: Start difference. First operand 1741 states and 2417 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 13:46:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:40,120 INFO L93 Difference]: Finished difference Result 3269 states and 4496 transitions. [2022-11-21 13:46:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:46:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-11-21 13:46:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:40,130 INFO L225 Difference]: With dead ends: 3269 [2022-11-21 13:46:40,130 INFO L226 Difference]: Without dead ends: 1889 [2022-11-21 13:46:40,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:46:40,135 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 940 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:40,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 2490 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:46:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-11-21 13:46:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1781. [2022-11-21 13:46:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1468 states have (on average 1.3998637602179838) internal successors, (2055), 1491 states have internal predecessors, (2055), 177 states have call successors, (177), 111 states have call predecessors, (177), 134 states have return successors, (219), 181 states have call predecessors, (219), 175 states have call successors, (219) [2022-11-21 13:46:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2451 transitions. [2022-11-21 13:46:40,297 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2451 transitions. Word has length 66 [2022-11-21 13:46:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:40,298 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2451 transitions. [2022-11-21 13:46:40,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 13:46:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2451 transitions. [2022-11-21 13:46:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 13:46:40,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:40,300 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 13:46:40,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:46:40,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 769489752, now seen corresponding path program 1 times [2022-11-21 13:46:40,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:40,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470724127] [2022-11-21 13:46:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:40,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:46:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:46:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470724127] [2022-11-21 13:46:40,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470724127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:40,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:40,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 13:46:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392396547] [2022-11-21 13:46:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:46:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:46:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:46:40,466 INFO L87 Difference]: Start difference. First operand 1781 states and 2451 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 13:46:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:43,137 INFO L93 Difference]: Finished difference Result 5353 states and 7325 transitions. [2022-11-21 13:46:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 13:46:43,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-11-21 13:46:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:43,147 INFO L225 Difference]: With dead ends: 5353 [2022-11-21 13:46:43,148 INFO L226 Difference]: Without dead ends: 2172 [2022-11-21 13:46:43,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:46:43,156 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 4318 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:43,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 2379 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 13:46:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-21 13:46:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1992. [2022-11-21 13:46:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1607 states have (on average 1.3571873055382702) internal successors, (2181), 1632 states have internal predecessors, (2181), 217 states have call successors, (217), 139 states have call predecessors, (217), 166 states have return successors, (265), 223 states have call predecessors, (265), 215 states have call successors, (265) [2022-11-21 13:46:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2663 transitions. [2022-11-21 13:46:43,304 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2663 transitions. Word has length 66 [2022-11-21 13:46:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:43,305 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 2663 transitions. [2022-11-21 13:46:43,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 13:46:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2663 transitions. [2022-11-21 13:46:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:46:43,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:43,308 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:46:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:46:43,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1205446518, now seen corresponding path program 1 times [2022-11-21 13:46:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:43,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234353914] [2022-11-21 13:46:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:46:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:46:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:43,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234353914] [2022-11-21 13:46:43,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234353914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:43,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:43,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:46:43,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748186373] [2022-11-21 13:46:43,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:43,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:46:43,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:46:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:46:43,521 INFO L87 Difference]: Start difference. First operand 1992 states and 2663 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 13:46:45,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:45,136 INFO L93 Difference]: Finished difference Result 3817 states and 5065 transitions. [2022-11-21 13:46:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:46:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-11-21 13:46:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:45,146 INFO L225 Difference]: With dead ends: 3817 [2022-11-21 13:46:45,146 INFO L226 Difference]: Without dead ends: 2186 [2022-11-21 13:46:45,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 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 13:46:45,151 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 626 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:45,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 2761 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:46:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2022-11-21 13:46:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2052. [2022-11-21 13:46:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1655 states have (on average 1.343202416918429) internal successors, (2223), 1680 states have internal predecessors, (2223), 217 states have call successors, (217), 139 states have call predecessors, (217), 178 states have return successors, (277), 235 states have call predecessors, (277), 215 states have call successors, (277) [2022-11-21 13:46:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2717 transitions. [2022-11-21 13:46:45,298 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2717 transitions. Word has length 91 [2022-11-21 13:46:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:45,300 INFO L495 AbstractCegarLoop]: Abstraction has 2052 states and 2717 transitions. [2022-11-21 13:46:45,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 13:46:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2717 transitions. [2022-11-21 13:46:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:46:45,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:45,308 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:46:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:46:45,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1649347192, now seen corresponding path program 1 times [2022-11-21 13:46:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:45,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68151878] [2022-11-21 13:46:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:46:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:46:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:45,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68151878] [2022-11-21 13:46:45,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68151878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:45,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:45,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:46:45,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635155779] [2022-11-21 13:46:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:46:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:46:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:46:45,563 INFO L87 Difference]: Start difference. First operand 2052 states and 2717 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 13:46:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:47,171 INFO L93 Difference]: Finished difference Result 3579 states and 4681 transitions. [2022-11-21 13:46:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:46:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-11-21 13:46:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:47,182 INFO L225 Difference]: With dead ends: 3579 [2022-11-21 13:46:47,183 INFO L226 Difference]: Without dead ends: 2126 [2022-11-21 13:46:47,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:46:47,211 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1725 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:47,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 1796 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:46:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2022-11-21 13:46:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1831. [2022-11-21 13:46:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1487 states have (on average 1.3483523873570948) internal successors, (2005), 1507 states have internal predecessors, (2005), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-11-21 13:46:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2431 transitions. [2022-11-21 13:46:47,352 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2431 transitions. Word has length 91 [2022-11-21 13:46:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:47,353 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2431 transitions. [2022-11-21 13:46:47,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 13:46:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2431 transitions. [2022-11-21 13:46:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:46:47,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:47,355 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:46:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:46:47,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash -706458058, now seen corresponding path program 1 times [2022-11-21 13:46:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671503424] [2022-11-21 13:46:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:47,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:46:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:46:47,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:47,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671503424] [2022-11-21 13:46:47,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671503424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:47,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:47,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:46:47,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359546907] [2022-11-21 13:46:47,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:47,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:46:47,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:46:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:46:47,519 INFO L87 Difference]: Start difference. First operand 1831 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 13:46:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:48,708 INFO L93 Difference]: Finished difference Result 4983 states and 6543 transitions. [2022-11-21 13:46:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:46:48,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-21 13:46:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:48,735 INFO L225 Difference]: With dead ends: 4983 [2022-11-21 13:46:48,736 INFO L226 Difference]: Without dead ends: 3514 [2022-11-21 13:46:48,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:46:48,742 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1316 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:48,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 1830 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 13:46:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-11-21 13:46:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3300. [2022-11-21 13:46:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2636 states have (on average 1.302352048558422) internal successors, (3433), 2685 states have internal predecessors, (3433), 350 states have call successors, (350), 233 states have call predecessors, (350), 312 states have return successors, (520), 384 states have call predecessors, (520), 348 states have call successors, (520) [2022-11-21 13:46:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4303 transitions. [2022-11-21 13:46:49,023 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4303 transitions. Word has length 91 [2022-11-21 13:46:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4303 transitions. [2022-11-21 13:46:49,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 13:46:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4303 transitions. [2022-11-21 13:46:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:46:49,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:49,027 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:46:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:46:49,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1764296136, now seen corresponding path program 1 times [2022-11-21 13:46:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386914560] [2022-11-21 13:46:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:46:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:46:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386914560] [2022-11-21 13:46:49,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386914560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:49,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:49,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:46:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361513560] [2022-11-21 13:46:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:49,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:46:49,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:49,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:46:49,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:46:49,116 INFO L87 Difference]: Start difference. First operand 3300 states and 4303 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:46:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:50,042 INFO L93 Difference]: Finished difference Result 4884 states and 6287 transitions. [2022-11-21 13:46:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:46:50,043 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-21 13:46:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:50,052 INFO L225 Difference]: With dead ends: 4884 [2022-11-21 13:46:50,052 INFO L226 Difference]: Without dead ends: 1946 [2022-11-21 13:46:50,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:46:50,067 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1041 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:50,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1292 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:46:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-11-21 13:46:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1831. [2022-11-21 13:46:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1487 states have (on average 1.3234700739744452) internal successors, (1968), 1507 states have internal predecessors, (1968), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-11-21 13:46:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2394 transitions. [2022-11-21 13:46:50,208 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2394 transitions. Word has length 91 [2022-11-21 13:46:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:50,208 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2394 transitions. [2022-11-21 13:46:50,208 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:46:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2394 transitions. [2022-11-21 13:46:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 13:46:50,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:50,210 INFO L195 NwaCegarLoop]: trace histogram [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 13:46:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:46:50,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2118566296, now seen corresponding path program 1 times [2022-11-21 13:46:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:50,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560440266] [2022-11-21 13:46:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:46:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:46:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:50,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560440266] [2022-11-21 13:46:50,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560440266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:50,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:50,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:46:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339283913] [2022-11-21 13:46:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:46:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:46:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:46:50,393 INFO L87 Difference]: Start difference. First operand 1831 states and 2394 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 13:46:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:52,454 INFO L93 Difference]: Finished difference Result 4249 states and 5477 transitions. [2022-11-21 13:46:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 13:46:52,455 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 92 [2022-11-21 13:46:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:52,468 INFO L225 Difference]: With dead ends: 4249 [2022-11-21 13:46:52,468 INFO L226 Difference]: Without dead ends: 2629 [2022-11-21 13:46:52,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-21 13:46:52,473 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2447 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2489 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:52,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2489 Valid, 2190 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:46:52,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2022-11-21 13:46:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2452. [2022-11-21 13:46:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1954 states have (on average 1.284544524053224) internal successors, (2510), 1982 states have internal predecessors, (2510), 266 states have call successors, (266), 168 states have call predecessors, (266), 230 states have return successors, (368), 303 states have call predecessors, (368), 264 states have call successors, (368) [2022-11-21 13:46:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3144 transitions. [2022-11-21 13:46:52,698 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3144 transitions. Word has length 92 [2022-11-21 13:46:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:52,698 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3144 transitions. [2022-11-21 13:46:52,699 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 13:46:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3144 transitions. [2022-11-21 13:46:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-21 13:46:52,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:52,702 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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 13:46:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:46:52,702 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2087366859, now seen corresponding path program 1 times [2022-11-21 13:46:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:52,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850304256] [2022-11-21 13:46:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:52,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:46:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:46:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:46:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:46:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:46:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 13:46:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 13:46:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 13:46:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:46:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 13:46:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 13:46:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:46:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 13:46:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 13:46:52,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850304256] [2022-11-21 13:46:52,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850304256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:46:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928417860] [2022-11-21 13:46:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:52,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:52,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:52,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:52,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:46:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:53,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:46:53,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 13:46:53,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:53,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928417860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:53,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:46:53,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 13:46:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124722198] [2022-11-21 13:46:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:53,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:46:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:46:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:46:53,304 INFO L87 Difference]: Start difference. First operand 2452 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:46:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:53,646 INFO L93 Difference]: Finished difference Result 6378 states and 7973 transitions. [2022-11-21 13:46:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:46:53,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-11-21 13:46:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:53,664 INFO L225 Difference]: With dead ends: 6378 [2022-11-21 13:46:53,664 INFO L226 Difference]: Without dead ends: 4364 [2022-11-21 13:46:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:46:53,671 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 61 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:53,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1389 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:46:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-11-21 13:46:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4322. [2022-11-21 13:46:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3411 states have (on average 1.2500732922896511) internal successors, (4264), 3462 states have internal predecessors, (4264), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-11-21 13:46:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5373 transitions. [2022-11-21 13:46:54,022 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5373 transitions. Word has length 163 [2022-11-21 13:46:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:54,022 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 5373 transitions. [2022-11-21 13:46:54,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 13:46:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5373 transitions. [2022-11-21 13:46:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:46:54,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:54,026 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] [2022-11-21 13:46:54,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:54,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66ed7611-ad5f-442b-a479-19221f757144/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:46:54,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash 812379227, now seen corresponding path program 1 times [2022-11-21 13:46:54,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:54,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255198373] [2022-11-21 13:46:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:46:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:46:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:46:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:46:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:54,443 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 13:46:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:54,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255198373] [2022-11-21 13:46:54,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255198373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:54,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:54,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:46:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532856544] [2022-11-21 13:46:54,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:54,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:46:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:46:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:46:54,446 INFO L87 Difference]: Start difference. First operand 4322 states and 5373 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 13:46:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:57,468 INFO L93 Difference]: Finished difference Result 4793 states and 6133 transitions. [2022-11-21 13:46:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:46:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-11-21 13:46:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:57,498 INFO L225 Difference]: With dead ends: 4793 [2022-11-21 13:46:57,498 INFO L226 Difference]: Without dead ends: 4453 [2022-11-21 13:46:57,501 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 13:46:57,502 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1063 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:57,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 964 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 13:46:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2022-11-21 13:46:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4322. [2022-11-21 13:46:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3411 states have (on average 1.2497801231310466) internal successors, (4263), 3462 states have internal predecessors, (4263), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-11-21 13:46:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5372 transitions. [2022-11-21 13:46:58,286 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5372 transitions. Word has length 167 [2022-11-21 13:46:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:58,286 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 5372 transitions. [2022-11-21 13:46:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 13:46:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5372 transitions. [2022-11-21 13:46:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:46:58,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:58,290 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] [2022-11-21 13:46:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:46:58,291 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2077396391, now seen corresponding path program 1 times [2022-11-21 13:46:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087397538] [2022-11-21 13:46:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:46:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:46:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:46:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:46:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:46:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:46:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087397538] [2022-11-21 13:46:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087397538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:58,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:58,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:46:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732536299] [2022-11-21 13:46:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:58,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:46:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:46:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:46:58,525 INFO L87 Difference]: Start difference. First operand 4322 states and 5372 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 13:47:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:03,031 INFO L93 Difference]: Finished difference Result 5266 states and 6899 transitions. [2022-11-21 13:47:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:47:03,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:03,050 INFO L225 Difference]: With dead ends: 5266 [2022-11-21 13:47:03,050 INFO L226 Difference]: Without dead ends: 4933 [2022-11-21 13:47:03,053 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 13:47:03,054 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1684 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:03,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 1461 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 13:47:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2022-11-21 13:47:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4672. [2022-11-21 13:47:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 3734 states have (on average 1.2795929298339581) internal successors, (4778), 3786 states have internal predecessors, (4778), 493 states have call successors, (493), 335 states have call predecessors, (493), 443 states have return successors, (659), 552 states have call predecessors, (659), 491 states have call successors, (659) [2022-11-21 13:47:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 5930 transitions. [2022-11-21 13:47:03,727 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 5930 transitions. Word has length 167 [2022-11-21 13:47:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:03,727 INFO L495 AbstractCegarLoop]: Abstraction has 4672 states and 5930 transitions. [2022-11-21 13:47:03,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 13:47:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 5930 transitions. [2022-11-21 13:47:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:03,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:03,731 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] [2022-11-21 13:47:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:47:03,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1077810211, now seen corresponding path program 1 times [2022-11-21 13:47:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:03,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91978628] [2022-11-21 13:47:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:04,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:04,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91978628] [2022-11-21 13:47:04,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91978628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:04,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:04,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617073953] [2022-11-21 13:47:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:04,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:04,009 INFO L87 Difference]: Start difference. First operand 4672 states and 5930 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:09,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:09,262 INFO L93 Difference]: Finished difference Result 6114 states and 8264 transitions. [2022-11-21 13:47:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:47:09,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:09,282 INFO L225 Difference]: With dead ends: 6114 [2022-11-21 13:47:09,282 INFO L226 Difference]: Without dead ends: 5431 [2022-11-21 13:47:09,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:47:09,287 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1725 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:09,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2573 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 13:47:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5431 states. [2022-11-21 13:47:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5431 to 4997. [2022-11-21 13:47:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.3003472222222223) internal successors, (5243), 4085 states have internal predecessors, (5243), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-11-21 13:47:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6437 transitions. [2022-11-21 13:47:10,007 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6437 transitions. Word has length 167 [2022-11-21 13:47:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:10,008 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6437 transitions. [2022-11-21 13:47:10,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6437 transitions. [2022-11-21 13:47:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:10,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:10,012 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] [2022-11-21 13:47:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:47:10,012 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash -739522661, now seen corresponding path program 1 times [2022-11-21 13:47:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66714549] [2022-11-21 13:47:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:10,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:10,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66714549] [2022-11-21 13:47:10,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66714549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:10,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:10,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242968169] [2022-11-21 13:47:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:10,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:10,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:10,246 INFO L87 Difference]: Start difference. First operand 4997 states and 6437 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:13,531 INFO L93 Difference]: Finished difference Result 6455 states and 8809 transitions. [2022-11-21 13:47:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:13,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:13,548 INFO L225 Difference]: With dead ends: 6455 [2022-11-21 13:47:13,549 INFO L226 Difference]: Without dead ends: 5447 [2022-11-21 13:47:13,553 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 13:47:13,554 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1503 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:13,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1218 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 13:47:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2022-11-21 13:47:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 4997. [2022-11-21 13:47:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.2996031746031746) internal successors, (5240), 4085 states have internal predecessors, (5240), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-11-21 13:47:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6434 transitions. [2022-11-21 13:47:14,267 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6434 transitions. Word has length 167 [2022-11-21 13:47:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:14,267 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6434 transitions. [2022-11-21 13:47:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6434 transitions. [2022-11-21 13:47:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:14,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:14,272 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] [2022-11-21 13:47:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:47:14,272 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1279952167, now seen corresponding path program 1 times [2022-11-21 13:47:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:14,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929864295] [2022-11-21 13:47:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:14,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929864295] [2022-11-21 13:47:14,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929864295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:14,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:14,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78878363] [2022-11-21 13:47:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:14,528 INFO L87 Difference]: Start difference. First operand 4997 states and 6434 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:17,615 INFO L93 Difference]: Finished difference Result 6451 states and 8792 transitions. [2022-11-21 13:47:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:17,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:17,632 INFO L225 Difference]: With dead ends: 6451 [2022-11-21 13:47:17,633 INFO L226 Difference]: Without dead ends: 5443 [2022-11-21 13:47:17,637 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 13:47:17,638 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1292 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:17,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1459 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:47:17,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2022-11-21 13:47:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 4997. [2022-11-21 13:47:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.298859126984127) internal successors, (5237), 4085 states have internal predecessors, (5237), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-11-21 13:47:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6431 transitions. [2022-11-21 13:47:18,240 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6431 transitions. Word has length 167 [2022-11-21 13:47:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:18,240 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6431 transitions. [2022-11-21 13:47:18,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6431 transitions. [2022-11-21 13:47:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:18,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:18,244 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] [2022-11-21 13:47:18,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:47:18,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1435932709, now seen corresponding path program 1 times [2022-11-21 13:47:18,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:18,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955993664] [2022-11-21 13:47:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:18,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955993664] [2022-11-21 13:47:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955993664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:18,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:18,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973306661] [2022-11-21 13:47:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:18,504 INFO L87 Difference]: Start difference. First operand 4997 states and 6431 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:24,176 INFO L93 Difference]: Finished difference Result 7355 states and 10215 transitions. [2022-11-21 13:47:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:47:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:24,193 INFO L225 Difference]: With dead ends: 7355 [2022-11-21 13:47:24,194 INFO L226 Difference]: Without dead ends: 6347 [2022-11-21 13:47:24,199 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 13:47:24,200 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1703 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:24,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 2571 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 13:47:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2022-11-21 13:47:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 5657. [2022-11-21 13:47:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 4638 states have (on average 1.3320396722725312) internal successors, (6178), 4693 states have internal predecessors, (6178), 553 states have call successors, (553), 353 states have call predecessors, (553), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-11-21 13:47:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 7460 transitions. [2022-11-21 13:47:25,149 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 7460 transitions. Word has length 167 [2022-11-21 13:47:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:25,150 INFO L495 AbstractCegarLoop]: Abstraction has 5657 states and 7460 transitions. [2022-11-21 13:47:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 7460 transitions. [2022-11-21 13:47:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:25,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:25,154 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] [2022-11-21 13:47:25,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:47:25,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1025322343, now seen corresponding path program 1 times [2022-11-21 13:47:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719365025] [2022-11-21 13:47:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719365025] [2022-11-21 13:47:25,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719365025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:25,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:25,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:25,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546637158] [2022-11-21 13:47:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:25,398 INFO L87 Difference]: Start difference. First operand 5657 states and 7460 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:28,790 INFO L93 Difference]: Finished difference Result 8003 states and 11233 transitions. [2022-11-21 13:47:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:28,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:28,811 INFO L225 Difference]: With dead ends: 8003 [2022-11-21 13:47:28,812 INFO L226 Difference]: Without dead ends: 6335 [2022-11-21 13:47:28,818 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 13:47:28,819 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1291 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:28,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 1459 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:47:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2022-11-21 13:47:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 5657. [2022-11-21 13:47:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 4638 states have (on average 1.3309616213885296) internal successors, (6173), 4693 states have internal predecessors, (6173), 553 states have call successors, (553), 353 states have call predecessors, (553), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-11-21 13:47:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 7455 transitions. [2022-11-21 13:47:30,054 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 7455 transitions. Word has length 167 [2022-11-21 13:47:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:30,054 INFO L495 AbstractCegarLoop]: Abstraction has 5657 states and 7455 transitions. [2022-11-21 13:47:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 7455 transitions. [2022-11-21 13:47:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:30,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:30,059 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] [2022-11-21 13:47:30,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:47:30,060 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1481775131, now seen corresponding path program 1 times [2022-11-21 13:47:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:30,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138452951] [2022-11-21 13:47:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:30,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138452951] [2022-11-21 13:47:30,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138452951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:30,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:30,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929211158] [2022-11-21 13:47:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:30,331 INFO L87 Difference]: Start difference. First operand 5657 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:36,004 INFO L93 Difference]: Finished difference Result 9759 states and 13980 transitions. [2022-11-21 13:47:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:47:36,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:36,028 INFO L225 Difference]: With dead ends: 9759 [2022-11-21 13:47:36,028 INFO L226 Difference]: Without dead ends: 8091 [2022-11-21 13:47:36,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:47:36,035 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1695 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:36,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 2571 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:47:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-11-21 13:47:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 6979. [2022-11-21 13:47:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5852 states have (on average 1.3754272043745728) internal successors, (8049), 5911 states have internal predecessors, (8049), 633 states have call successors, (633), 377 states have call predecessors, (633), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-11-21 13:47:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 9513 transitions. [2022-11-21 13:47:37,104 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 9513 transitions. Word has length 167 [2022-11-21 13:47:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:37,105 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 9513 transitions. [2022-11-21 13:47:37,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 9513 transitions. [2022-11-21 13:47:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:37,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:37,109 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] [2022-11-21 13:47:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:47:37,110 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash -654108071, now seen corresponding path program 1 times [2022-11-21 13:47:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:37,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873436019] [2022-11-21 13:47:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:37,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:37,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:37,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873436019] [2022-11-21 13:47:37,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873436019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:37,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:37,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519911511] [2022-11-21 13:47:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:37,381 INFO L87 Difference]: Start difference. First operand 6979 states and 9513 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:40,862 INFO L93 Difference]: Finished difference Result 11099 states and 16100 transitions. [2022-11-21 13:47:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:40,883 INFO L225 Difference]: With dead ends: 11099 [2022-11-21 13:47:40,883 INFO L226 Difference]: Without dead ends: 8109 [2022-11-21 13:47:40,891 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 13:47:40,892 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1290 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:40,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1459 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:47:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8109 states. [2022-11-21 13:47:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8109 to 6979. [2022-11-21 13:47:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5852 states have (on average 1.3738892686261108) internal successors, (8040), 5911 states have internal predecessors, (8040), 633 states have call successors, (633), 377 states have call predecessors, (633), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-11-21 13:47:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 9504 transitions. [2022-11-21 13:47:41,923 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 9504 transitions. Word has length 167 [2022-11-21 13:47:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:41,923 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 9504 transitions. [2022-11-21 13:47:41,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 9504 transitions. [2022-11-21 13:47:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:41,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:41,927 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] [2022-11-21 13:47:41,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:47:41,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash -584460197, now seen corresponding path program 1 times [2022-11-21 13:47:41,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:41,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639693429] [2022-11-21 13:47:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:41,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:42,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639693429] [2022-11-21 13:47:42,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639693429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:42,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:42,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091235734] [2022-11-21 13:47:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:42,188 INFO L87 Difference]: Start difference. First operand 6979 states and 9504 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:48,957 INFO L93 Difference]: Finished difference Result 14565 states and 21504 transitions. [2022-11-21 13:47:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:47:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:48,987 INFO L225 Difference]: With dead ends: 14565 [2022-11-21 13:47:48,988 INFO L226 Difference]: Without dead ends: 11575 [2022-11-21 13:47:48,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:47:48,999 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1693 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:49,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 2571 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3433 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 13:47:49,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11575 states. [2022-11-21 13:47:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11575 to 9637. [2022-11-21 13:47:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.422715215818664) internal successors, (11800), 8361 states have internal predecessors, (11800), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-11-21 13:47:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13646 transitions. [2022-11-21 13:47:51,186 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13646 transitions. Word has length 167 [2022-11-21 13:47:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:51,186 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13646 transitions. [2022-11-21 13:47:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13646 transitions. [2022-11-21 13:47:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:51,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:51,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:51,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 13:47:51,192 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash -166571495, now seen corresponding path program 1 times [2022-11-21 13:47:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737743414] [2022-11-21 13:47:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:51,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737743414] [2022-11-21 13:47:51,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737743414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:51,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:51,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381871132] [2022-11-21 13:47:51,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:51,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:51,413 INFO L87 Difference]: Start difference. First operand 9637 states and 13646 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:55,534 INFO L93 Difference]: Finished difference Result 17273 states and 25815 transitions. [2022-11-21 13:47:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:47:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:47:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:55,566 INFO L225 Difference]: With dead ends: 17273 [2022-11-21 13:47:55,566 INFO L226 Difference]: Without dead ends: 11625 [2022-11-21 13:47:55,581 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 13:47:55,581 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1502 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:55,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1218 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 13:47:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2022-11-21 13:47:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 9637. [2022-11-21 13:47:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.4206655413551965) internal successors, (11783), 8361 states have internal predecessors, (11783), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-11-21 13:47:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13629 transitions. [2022-11-21 13:47:57,494 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13629 transitions. Word has length 167 [2022-11-21 13:47:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:57,494 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13629 transitions. [2022-11-21 13:47:57,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:47:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13629 transitions. [2022-11-21 13:47:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:47:57,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:57,499 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] [2022-11-21 13:47:57,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 13:47:57,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1784011945, now seen corresponding path program 1 times [2022-11-21 13:47:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530924333] [2022-11-21 13:47:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:47:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:47:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:47:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:47:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:47:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530924333] [2022-11-21 13:47:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530924333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:57,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:57,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:47:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172119957] [2022-11-21 13:47:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:57,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:47:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:57,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:47:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:47:57,725 INFO L87 Difference]: Start difference. First operand 9637 states and 13629 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:02,350 INFO L93 Difference]: Finished difference Result 17255 states and 25728 transitions. [2022-11-21 13:48:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:02,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:48:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:02,377 INFO L225 Difference]: With dead ends: 17255 [2022-11-21 13:48:02,378 INFO L226 Difference]: Without dead ends: 11607 [2022-11-21 13:48:02,390 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 13:48:02,390 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1289 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:02,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1457 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 13:48:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2022-11-21 13:48:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 9637. [2022-11-21 13:48:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.418615866891729) internal successors, (11766), 8361 states have internal predecessors, (11766), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-11-21 13:48:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13612 transitions. [2022-11-21 13:48:04,519 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13612 transitions. Word has length 167 [2022-11-21 13:48:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:04,520 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13612 transitions. [2022-11-21 13:48:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13612 transitions. [2022-11-21 13:48:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:48:04,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:04,524 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] [2022-11-21 13:48:04,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 13:48:04,525 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1420545447, now seen corresponding path program 1 times [2022-11-21 13:48:04,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:04,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174960852] [2022-11-21 13:48:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:48:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:48:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:48:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:48:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:48:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:04,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174960852] [2022-11-21 13:48:04,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174960852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:04,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:04,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:48:04,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494074541] [2022-11-21 13:48:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:04,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:48:04,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:48:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:48:04,765 INFO L87 Difference]: Start difference. First operand 9637 states and 13612 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:13,907 INFO L93 Difference]: Finished difference Result 26559 states and 40146 transitions. [2022-11-21 13:48:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:48:13,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:48:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:13,963 INFO L225 Difference]: With dead ends: 26559 [2022-11-21 13:48:13,963 INFO L226 Difference]: Without dead ends: 20911 [2022-11-21 13:48:13,979 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 13:48:13,980 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 2081 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 3348 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:13,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 2557 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3348 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 13:48:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20911 states. [2022-11-21 13:48:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20911 to 14889. [2022-11-21 13:48:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14889 states, 13130 states have (on average 1.4609291698400608) internal successors, (19182), 13213 states have internal predecessors, (19182), 1097 states have call successors, (1097), 521 states have call predecessors, (1097), 660 states have return successors, (1535), 1187 states have call predecessors, (1535), 1095 states have call successors, (1535) [2022-11-21 13:48:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14889 states to 14889 states and 21814 transitions. [2022-11-21 13:48:16,566 INFO L78 Accepts]: Start accepts. Automaton has 14889 states and 21814 transitions. Word has length 167 [2022-11-21 13:48:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:16,567 INFO L495 AbstractCegarLoop]: Abstraction has 14889 states and 21814 transitions. [2022-11-21 13:48:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 14889 states and 21814 transitions. [2022-11-21 13:48:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:48:16,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:16,574 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] [2022-11-21 13:48:16,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 13:48:16,575 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:16,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1131726057, now seen corresponding path program 1 times [2022-11-21 13:48:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:16,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500074717] [2022-11-21 13:48:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:48:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:48:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:48:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:48:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:48:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:16,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500074717] [2022-11-21 13:48:16,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500074717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:16,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:16,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:48:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368524855] [2022-11-21 13:48:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:48:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:48:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:48:16,813 INFO L87 Difference]: Start difference. First operand 14889 states and 21814 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:30,857 INFO L93 Difference]: Finished difference Result 47441 states and 73006 transitions. [2022-11-21 13:48:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:48:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:48:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:30,943 INFO L225 Difference]: With dead ends: 47441 [2022-11-21 13:48:30,944 INFO L226 Difference]: Without dead ends: 36541 [2022-11-21 13:48:30,971 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 13:48:30,972 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1766 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:30,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2561 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 13:48:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36541 states. [2022-11-21 13:48:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36541 to 25450. [2022-11-21 13:48:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25450 states, 22875 states have (on average 1.4926338797814207) internal successors, (34144), 22990 states have internal predecessors, (34144), 1689 states have call successors, (1689), 713 states have call predecessors, (1689), 884 states have return successors, (2645), 1811 states have call predecessors, (2645), 1687 states have call successors, (2645) [2022-11-21 13:48:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25450 states to 25450 states and 38478 transitions. [2022-11-21 13:48:36,182 INFO L78 Accepts]: Start accepts. Automaton has 25450 states and 38478 transitions. Word has length 167 [2022-11-21 13:48:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:36,182 INFO L495 AbstractCegarLoop]: Abstraction has 25450 states and 38478 transitions. [2022-11-21 13:48:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:48:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 25450 states and 38478 transitions. [2022-11-21 13:48:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:48:36,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:36,193 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] [2022-11-21 13:48:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 13:48:36,193 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1676598631, now seen corresponding path program 1 times [2022-11-21 13:48:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344542077] [2022-11-21 13:48:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:48:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:48:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:48:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:48:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:48:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:36,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:36,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344542077] [2022-11-21 13:48:36,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344542077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:36,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:36,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:48:36,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459727712] [2022-11-21 13:48:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:36,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:48:36,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:36,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:48:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:48:36,444 INFO L87 Difference]: Start difference. First operand 25450 states and 38478 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:49:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:00,840 INFO L93 Difference]: Finished difference Result 88816 states and 138772 transitions. [2022-11-21 13:49:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:49:00,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-11-21 13:49:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:01,130 INFO L225 Difference]: With dead ends: 88816 [2022-11-21 13:49:01,130 INFO L226 Difference]: Without dead ends: 67355 [2022-11-21 13:49:01,212 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 13:49:01,213 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 2002 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:01,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 2561 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 13:49:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67355 states. [2022-11-21 13:49:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67355 to 46539. [2022-11-21 13:49:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46539 states, 42364 states have (on average 1.513029931073553) internal successors, (64098), 42543 states have internal predecessors, (64098), 2841 states have call successors, (2841), 1097 states have call predecessors, (2841), 1332 states have return successors, (5319), 3027 states have call predecessors, (5319), 2839 states have call successors, (5319) [2022-11-21 13:49:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46539 states to 46539 states and 72258 transitions. [2022-11-21 13:49:11,470 INFO L78 Accepts]: Start accepts. Automaton has 46539 states and 72258 transitions. Word has length 167 [2022-11-21 13:49:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:11,471 INFO L495 AbstractCegarLoop]: Abstraction has 46539 states and 72258 transitions. [2022-11-21 13:49:11,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 13:49:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 46539 states and 72258 transitions. [2022-11-21 13:49:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-21 13:49:11,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:11,490 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] [2022-11-21 13:49:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 13:49:11,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1001438505, now seen corresponding path program 1 times [2022-11-21 13:49:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862426190] [2022-11-21 13:49:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:11,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:49:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 13:49:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:49:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 13:49:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-21 13:49:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:11,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862426190] [2022-11-21 13:49:11,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862426190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:11,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:11,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:49:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450758184] [2022-11-21 13:49:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:11,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:49:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:49:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:11,936 INFO L87 Difference]: Start difference. First operand 46539 states and 72258 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)