./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:47:38,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:47:38,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:47:38,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:47:38,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:47:38,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:47:38,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:47:38,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:47:38,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:47:38,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:47:38,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:47:38,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:47:38,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:47:38,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:47:38,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:47:38,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:47:38,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:47:38,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:47:38,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:47:38,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:47:38,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:47:38,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:47:38,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:47:38,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:47:38,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:47:38,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:47:38,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:47:38,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:47:38,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:47:38,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:47:38,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:47:38,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:47:38,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:47:38,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:47:38,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:47:38,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:47:38,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:47:38,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:47:38,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:47:38,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:47:38,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:47:38,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:47:38,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:47:38,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:47:38,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:47:38,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:47:38,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:47:38,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:47:38,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:47:38,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:47:38,477 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:47:38,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:47:38,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:47:38,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:47:38,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:47:38,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:47:38,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:47:38,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:47:38,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:47:38,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:47:38,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:47:38,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:47:38,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:47:38,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:47:38,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:47:38,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:47:38,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:47:38,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:47:38,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:47:38,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:47:38,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:47:38,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:47:38,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:47:38,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:47:38,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:47:38,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:47:38,483 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 [2021-12-14 15:47:38,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:47:38,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:47:38,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:47:38,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:47:38,779 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:47:38,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2021-12-14 15:47:38,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c3e321a/d7de6472278b488ab4f66036f44cb46b/FLAG8ffa09c73 [2021-12-14 15:47:39,577 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:47:39,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2021-12-14 15:47:39,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c3e321a/d7de6472278b488ab4f66036f44cb46b/FLAG8ffa09c73 [2021-12-14 15:47:40,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c3e321a/d7de6472278b488ab4f66036f44cb46b [2021-12-14 15:47:40,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:47:40,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:47:40,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:47:40,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:47:40,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:47:40,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:40" (1/1) ... [2021-12-14 15:47:40,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e5fbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:40, skipping insertion in model container [2021-12-14 15:47:40,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:40" (1/1) ... [2021-12-14 15:47:40,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:47:40,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:47:41,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2021-12-14 15:47:41,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2021-12-14 15:47:41,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:47:41,948 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:47:42,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2021-12-14 15:47:42,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2021-12-14 15:47:42,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:47:43,013 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:47:43,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43 WrapperNode [2021-12-14 15:47:43,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:47:43,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:47:43,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:47:43,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:47:43,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,523 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-12-14 15:47:43,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:47:43,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:47:43,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:47:43,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:47:43,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:47:43,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:47:43,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:47:43,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:47:43,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (1/1) ... [2021-12-14 15:47:43,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:47:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:47:43,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:47:43,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:47:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:47:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:47:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:47:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:47:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:47:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:47:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:47:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:47:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:47:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:47:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:47:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:47:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:47:44,094 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:47:44,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:47:49,764 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:47:49,787 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:47:49,788 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 15:47:49,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:49 BoogieIcfgContainer [2021-12-14 15:47:49,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:47:49,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:47:49,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:47:49,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:47:49,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:47:40" (1/3) ... [2021-12-14 15:47:49,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb2df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:49, skipping insertion in model container [2021-12-14 15:47:49,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:43" (2/3) ... [2021-12-14 15:47:49,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fb2df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:49, skipping insertion in model container [2021-12-14 15:47:49,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:49" (3/3) ... [2021-12-14 15:47:49,798 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.09.cil-1.c [2021-12-14 15:47:49,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:47:49,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:47:49,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:47:49,850 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:47:49,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:47:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:47:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:47:49,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:49,909 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:47:49,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-14 15:47:49,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:49,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827774280] [2021-12-14 15:47:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:49,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:47:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:47:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:47:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:47:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:47:50,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:50,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827774280] [2021-12-14 15:47:50,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827774280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:50,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:50,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:47:50,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051748206] [2021-12-14 15:47:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:50,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:47:50,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:50,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:47:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:47:50,432 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:47:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:51,617 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-12-14 15:47:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:47:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2021-12-14 15:47:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:51,647 INFO L225 Difference]: With dead ends: 5081 [2021-12-14 15:47:51,647 INFO L226 Difference]: Without dead ends: 2532 [2021-12-14 15:47:51,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:47:51,658 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:51,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:47:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-12-14 15:47:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-12-14 15:47:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:47:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-12-14 15:47:51,856 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-12-14 15:47:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:51,856 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-12-14 15:47:51,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:47:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-12-14 15:47:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:47:51,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:51,861 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:47:51,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:47:51,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-12-14 15:47:51,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:51,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678086942] [2021-12-14 15:47:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:51,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:47:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:47:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:47:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:47:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:47:52,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:52,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678086942] [2021-12-14 15:47:52,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678086942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:52,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:52,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:47:52,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059222205] [2021-12-14 15:47:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:52,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:47:52,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:47:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:47:52,075 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:47:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:54,255 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-12-14 15:47:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:47:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2021-12-14 15:47:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:54,269 INFO L225 Difference]: With dead ends: 3223 [2021-12-14 15:47:54,270 INFO L226 Difference]: Without dead ends: 2938 [2021-12-14 15:47:54,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:47:54,273 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:54,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:47:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-12-14 15:47:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-12-14 15:47:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:47:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-12-14 15:47:54,362 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-12-14 15:47:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:54,363 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-12-14 15:47:54,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:47:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-12-14 15:47:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:47:54,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:54,366 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:47:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:47:54,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-12-14 15:47:54,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:54,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141592447] [2021-12-14 15:47:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:54,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:47:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:47:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:47:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:47:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:47:54,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:54,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141592447] [2021-12-14 15:47:54,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141592447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:54,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:54,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725337250] [2021-12-14 15:47:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:54,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:54,542 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:47:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:55,860 INFO L93 Difference]: Finished difference Result 3537 states and 6220 transitions. [2021-12-14 15:47:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:47:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:47:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:55,873 INFO L225 Difference]: With dead ends: 3537 [2021-12-14 15:47:55,874 INFO L226 Difference]: Without dead ends: 2954 [2021-12-14 15:47:55,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:47:55,877 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4962 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:55,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4979 Valid, 16925 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:47:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-12-14 15:47:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2721. [2021-12-14 15:47:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8063789868667917) internal successors, (4814), 2668 states have internal predecessors, (4814), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:47:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4899 transitions. [2021-12-14 15:47:55,968 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4899 transitions. Word has length 145 [2021-12-14 15:47:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:55,969 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4899 transitions. [2021-12-14 15:47:55,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:47:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4899 transitions. [2021-12-14 15:47:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:47:55,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:55,972 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:47:55,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:47:55,972 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-12-14 15:47:55,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:55,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117315068] [2021-12-14 15:47:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:47:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:47:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:47:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:47:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:47:56,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117315068] [2021-12-14 15:47:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117315068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:56,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:56,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705983065] [2021-12-14 15:47:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:56,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:56,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:56,114 INFO L87 Difference]: Start difference. First operand 2721 states and 4899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:47:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:58,792 INFO L93 Difference]: Finished difference Result 3938 states and 6853 transitions. [2021-12-14 15:47:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:58,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:47:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:58,808 INFO L225 Difference]: With dead ends: 3938 [2021-12-14 15:47:58,809 INFO L226 Difference]: Without dead ends: 3355 [2021-12-14 15:47:58,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:58,822 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 5180 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22117 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:58,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22117 Invalid, 2448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:47:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-12-14 15:47:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2999. [2021-12-14 15:47:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2918 states have (on average 1.7840986977381768) internal successors, (5206), 2922 states have internal predecessors, (5206), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-14 15:47:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5329 transitions. [2021-12-14 15:47:58,943 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5329 transitions. Word has length 145 [2021-12-14 15:47:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:58,944 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5329 transitions. [2021-12-14 15:47:58,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:47:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5329 transitions. [2021-12-14 15:47:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:47:58,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:58,953 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:47:58,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:47:58,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-12-14 15:47:58,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736253231] [2021-12-14 15:47:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:58,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:47:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:47:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:47:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:47:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:47:59,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:59,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736253231] [2021-12-14 15:47:59,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736253231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:59,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:59,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:59,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95152586] [2021-12-14 15:47:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:59,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:59,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:59,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:59,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:59,105 INFO L87 Difference]: Start difference. First operand 2999 states and 5329 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:01,426 INFO L93 Difference]: Finished difference Result 4992 states and 8519 transitions. [2021-12-14 15:48:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:01,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:01,445 INFO L225 Difference]: With dead ends: 4992 [2021-12-14 15:48:01,445 INFO L226 Difference]: Without dead ends: 4131 [2021-12-14 15:48:01,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:01,449 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5176 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:01,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 22106 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:48:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-12-14 15:48:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3558. [2021-12-14 15:48:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7493434490808286) internal successors, (5995), 3433 states have internal predecessors, (5995), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:48:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6198 transitions. [2021-12-14 15:48:01,572 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6198 transitions. Word has length 145 [2021-12-14 15:48:01,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:01,573 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6198 transitions. [2021-12-14 15:48:01,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6198 transitions. [2021-12-14 15:48:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:01,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:01,576 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:01,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:48:01,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-12-14 15:48:01,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:01,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065807101] [2021-12-14 15:48:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:01,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:01,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:01,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065807101] [2021-12-14 15:48:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065807101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:01,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:01,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717603290] [2021-12-14 15:48:01,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:01,754 INFO L87 Difference]: Start difference. First operand 3558 states and 6198 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:03,056 INFO L93 Difference]: Finished difference Result 5541 states and 9379 transitions. [2021-12-14 15:48:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:03,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:03,074 INFO L225 Difference]: With dead ends: 5541 [2021-12-14 15:48:03,074 INFO L226 Difference]: Without dead ends: 4121 [2021-12-14 15:48:03,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:03,080 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4829 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:03,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 21024 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:48:03,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-12-14 15:48:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3558. [2021-12-14 15:48:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7478844470382258) internal successors, (5990), 3433 states have internal predecessors, (5990), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:48:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6193 transitions. [2021-12-14 15:48:03,270 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6193 transitions. Word has length 145 [2021-12-14 15:48:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:03,272 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6193 transitions. [2021-12-14 15:48:03,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6193 transitions. [2021-12-14 15:48:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:03,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:03,275 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:03,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:48:03,275 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-12-14 15:48:03,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:03,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076934940] [2021-12-14 15:48:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:03,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:03,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076934940] [2021-12-14 15:48:03,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076934940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:03,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:03,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:03,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31429737] [2021-12-14 15:48:03,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:03,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:03,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:03,409 INFO L87 Difference]: Start difference. First operand 3558 states and 6193 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:04,497 INFO L93 Difference]: Finished difference Result 5535 states and 9352 transitions. [2021-12-14 15:48:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:04,514 INFO L225 Difference]: With dead ends: 5535 [2021-12-14 15:48:04,515 INFO L226 Difference]: Without dead ends: 4115 [2021-12-14 15:48:04,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:04,520 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 5011 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 16878 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:04,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 16878 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:48:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-12-14 15:48:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3558. [2021-12-14 15:48:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.746425444995623) internal successors, (5985), 3433 states have internal predecessors, (5985), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:48:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6188 transitions. [2021-12-14 15:48:04,644 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6188 transitions. Word has length 145 [2021-12-14 15:48:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:04,644 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6188 transitions. [2021-12-14 15:48:04,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6188 transitions. [2021-12-14 15:48:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:04,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:04,647 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:04,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:48:04,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-12-14 15:48:04,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:04,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970499747] [2021-12-14 15:48:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:04,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:04,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:04,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970499747] [2021-12-14 15:48:04,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970499747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:04,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:04,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:04,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117063174] [2021-12-14 15:48:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:04,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:04,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:04,781 INFO L87 Difference]: Start difference. First operand 3558 states and 6188 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:05,950 INFO L93 Difference]: Finished difference Result 5529 states and 9325 transitions. [2021-12-14 15:48:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:48:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:05,965 INFO L225 Difference]: With dead ends: 5529 [2021-12-14 15:48:05,965 INFO L226 Difference]: Without dead ends: 4109 [2021-12-14 15:48:05,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:48:05,970 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4825 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 21016 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:05,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 21016 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:48:05,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-12-14 15:48:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3558. [2021-12-14 15:48:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.74496644295302) internal successors, (5980), 3433 states have internal predecessors, (5980), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:48:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6183 transitions. [2021-12-14 15:48:06,086 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6183 transitions. Word has length 145 [2021-12-14 15:48:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:06,087 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6183 transitions. [2021-12-14 15:48:06,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6183 transitions. [2021-12-14 15:48:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:06,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:06,090 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:06,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:48:06,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-12-14 15:48:06,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905245151] [2021-12-14 15:48:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:06,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:06,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:06,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905245151] [2021-12-14 15:48:06,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905245151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:06,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:06,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:06,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745471879] [2021-12-14 15:48:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:06,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:06,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:06,217 INFO L87 Difference]: Start difference. First operand 3558 states and 6183 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:08,440 INFO L93 Difference]: Finished difference Result 7013 states and 11620 transitions. [2021-12-14 15:48:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:08,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:08,457 INFO L225 Difference]: With dead ends: 7013 [2021-12-14 15:48:08,458 INFO L226 Difference]: Without dead ends: 5593 [2021-12-14 15:48:08,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:08,464 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5154 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 22083 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:08,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 22083 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:48:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-12-14 15:48:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 4694. [2021-12-14 15:48:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4463 states have (on average 1.69572036746583) internal successors, (7568), 4473 states have internal predecessors, (7568), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-14 15:48:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7937 transitions. [2021-12-14 15:48:08,642 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7937 transitions. Word has length 145 [2021-12-14 15:48:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:08,642 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 7937 transitions. [2021-12-14 15:48:08,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7937 transitions. [2021-12-14 15:48:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:08,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:08,645 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:08,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:48:08,645 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:08,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-12-14 15:48:08,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:08,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813295817] [2021-12-14 15:48:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:08,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:08,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:08,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813295817] [2021-12-14 15:48:08,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813295817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:08,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:08,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:08,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692168351] [2021-12-14 15:48:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:08,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:08,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:08,763 INFO L87 Difference]: Start difference. First operand 4694 states and 7937 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:11,168 INFO L93 Difference]: Finished difference Result 11095 states and 17992 transitions. [2021-12-14 15:48:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:48:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:11,194 INFO L225 Difference]: With dead ends: 11095 [2021-12-14 15:48:11,195 INFO L226 Difference]: Without dead ends: 8539 [2021-12-14 15:48:11,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:48:11,205 INFO L933 BasicCegarLoop]: 4702 mSDtfsCounter, 5156 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:11,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 22076 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:48:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2021-12-14 15:48:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6967. [2021-12-14 15:48:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6536 states have (on average 1.6435128518971849) internal successors, (10742), 6554 states have internal predecessors, (10742), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-14 15:48:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 11461 transitions. [2021-12-14 15:48:11,539 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 11461 transitions. Word has length 145 [2021-12-14 15:48:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:11,540 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 11461 transitions. [2021-12-14 15:48:11,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 11461 transitions. [2021-12-14 15:48:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:11,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:11,545 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:11,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:48:11,545 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-12-14 15:48:11,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:11,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470665913] [2021-12-14 15:48:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:11,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:11,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:11,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470665913] [2021-12-14 15:48:11,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470665913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:11,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:11,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:11,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996951436] [2021-12-14 15:48:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:11,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:11,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:11,647 INFO L87 Difference]: Start difference. First operand 6967 states and 11461 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:14,831 INFO L93 Difference]: Finished difference Result 21204 states and 33776 transitions. [2021-12-14 15:48:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:48:14,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:14,887 INFO L225 Difference]: With dead ends: 21204 [2021-12-14 15:48:14,887 INFO L226 Difference]: Without dead ends: 16375 [2021-12-14 15:48:14,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:48:14,911 INFO L933 BasicCegarLoop]: 4830 mSDtfsCounter, 5233 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 22193 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:14,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 22193 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:48:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2021-12-14 15:48:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 11417. [2021-12-14 15:48:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 10602 states have (on average 1.6021505376344085) internal successors, (16986), 10636 states have internal predecessors, (16986), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-14 15:48:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 18427 transitions. [2021-12-14 15:48:15,539 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 18427 transitions. Word has length 145 [2021-12-14 15:48:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:15,539 INFO L470 AbstractCegarLoop]: Abstraction has 11417 states and 18427 transitions. [2021-12-14 15:48:15,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 18427 transitions. [2021-12-14 15:48:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:15,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:15,546 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:15,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:48:15,547 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-12-14 15:48:15,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:15,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378066662] [2021-12-14 15:48:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:15,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:15,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:15,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378066662] [2021-12-14 15:48:15,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378066662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:15,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:15,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:15,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155087885] [2021-12-14 15:48:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:15,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:15,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:15,658 INFO L87 Difference]: Start difference. First operand 11417 states and 18427 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:19,295 INFO L93 Difference]: Finished difference Result 38692 states and 61336 transitions. [2021-12-14 15:48:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:48:19,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:19,390 INFO L225 Difference]: With dead ends: 38692 [2021-12-14 15:48:19,390 INFO L226 Difference]: Without dead ends: 29413 [2021-12-14 15:48:19,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:48:19,426 INFO L933 BasicCegarLoop]: 4686 mSDtfsCounter, 5441 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5467 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:19,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5467 Valid, 22052 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:48:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29413 states. [2021-12-14 15:48:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29413 to 20378. [2021-12-14 15:48:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20378 states, 18811 states have (on average 1.5741853171016957) internal successors, (29612), 18877 states have internal predecessors, (29612), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-14 15:48:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20378 states to 20378 states and 32627 transitions. [2021-12-14 15:48:20,580 INFO L78 Accepts]: Start accepts. Automaton has 20378 states and 32627 transitions. Word has length 145 [2021-12-14 15:48:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:20,580 INFO L470 AbstractCegarLoop]: Abstraction has 20378 states and 32627 transitions. [2021-12-14 15:48:20,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 20378 states and 32627 transitions. [2021-12-14 15:48:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:20,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:20,593 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:20,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:48:20,593 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash -560662113, now seen corresponding path program 1 times [2021-12-14 15:48:20,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:20,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332330543] [2021-12-14 15:48:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:20,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:20,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:20,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332330543] [2021-12-14 15:48:20,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332330543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:20,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:20,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:20,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360968648] [2021-12-14 15:48:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:20,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:20,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:20,715 INFO L87 Difference]: Start difference. First operand 20378 states and 32627 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:48:25,924 INFO L93 Difference]: Finished difference Result 73283 states and 116510 transitions. [2021-12-14 15:48:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:48:25,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:48:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:48:26,144 INFO L225 Difference]: With dead ends: 73283 [2021-12-14 15:48:26,144 INFO L226 Difference]: Without dead ends: 55043 [2021-12-14 15:48:26,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:48:26,212 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5401 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:48:26,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5427 Valid, 22047 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:48:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55043 states. [2021-12-14 15:48:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55043 to 38267. [2021-12-14 15:48:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38267 states, 35228 states have (on average 1.5582491200181674) internal successors, (54894), 35358 states have internal predecessors, (54894), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-14 15:48:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38267 states to 38267 states and 61479 transitions. [2021-12-14 15:48:28,580 INFO L78 Accepts]: Start accepts. Automaton has 38267 states and 61479 transitions. Word has length 145 [2021-12-14 15:48:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:48:28,580 INFO L470 AbstractCegarLoop]: Abstraction has 38267 states and 61479 transitions. [2021-12-14 15:48:28,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:48:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 38267 states and 61479 transitions. [2021-12-14 15:48:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:48:28,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:48:28,601 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:48:28,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:48:28,602 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:48:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:48:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -89305763, now seen corresponding path program 1 times [2021-12-14 15:48:28,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:48:28,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879627651] [2021-12-14 15:48:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:48:28,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:48:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:48:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:48:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:48:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:48:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:48:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:48:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:48:28,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:48:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879627651] [2021-12-14 15:48:28,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879627651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:48:28,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:48:28,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:48:28,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981011662] [2021-12-14 15:48:28,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:48:28,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:48:28,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:48:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:48:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:48:28,712 INFO L87 Difference]: Start difference. First operand 38267 states and 61479 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)