./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/pc_sfifo_2.cil-1+token_ring.07.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 b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:06:34,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:06:34,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:06:34,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:06:34,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:06:34,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:06:34,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:06:34,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:06:34,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:06:34,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:06:34,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:06:34,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:06:34,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:06:34,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:06:34,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:06:34,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:06:34,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:06:34,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:06:34,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:06:34,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:06:34,557 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:06:34,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:06:34,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:06:34,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:06:34,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:06:34,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:06:34,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:06:34,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:06:34,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:06:34,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:06:34,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:06:34,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:06:34,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:06:34,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:06:34,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:06:34,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:06:34,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:06:34,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:06:34,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:06:34,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:06:34,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:06:34,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:06:34,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:06:34,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:06:34,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:06:34,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:06:34,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:06:34,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:06:34,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:06:34,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:06:34,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:06:34,619 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:06:34,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:06:34,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:06:34,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:06:34,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:06:34,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:06:34,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:06:34,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:06:34,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:06:34,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:06:34,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:06:34,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:06:34,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:06:34,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:06:34,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:06:34,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:06:34,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:06:34,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:06:34,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:06:34,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:06:34,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 [2022-07-21 08:06:34,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:06:34,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:06:34,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:06:34,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:06:34,910 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:06:34,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2022-07-21 08:06:34,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92cb08af3/cb940f66596141a0bf400f4a037184b2/FLAG80c66f03b [2022-07-21 08:06:35,427 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:06:35,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2022-07-21 08:06:35,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92cb08af3/cb940f66596141a0bf400f4a037184b2/FLAG80c66f03b [2022-07-21 08:06:35,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92cb08af3/cb940f66596141a0bf400f4a037184b2 [2022-07-21 08:06:35,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:06:35,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:06:35,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:06:35,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:06:35,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:06:35,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e43e02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35, skipping insertion in model container [2022-07-21 08:06:35,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:06:35,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:06:35,622 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/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[914,927] [2022-07-21 08:06:35,672 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/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[7115,7128] [2022-07-21 08:06:35,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:06:35,779 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:06:35,793 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/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[914,927] [2022-07-21 08:06:35,830 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/pc_sfifo_2.cil-1+token_ring.07.cil-1.c[7115,7128] [2022-07-21 08:06:35,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:06:35,896 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:06:35,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35 WrapperNode [2022-07-21 08:06:35,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:06:35,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:06:35,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:06:35,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:06:35,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,960 INFO L137 Inliner]: procedures = 67, calls = 78, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 750 [2022-07-21 08:06:35,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:06:35,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:06:35,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:06:35,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:06:35,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:35,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:36,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:36,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:36,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:36,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:06:36,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:06:36,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:06:36,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:06:36,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (1/1) ... [2022-07-21 08:06:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:06:36,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:36,079 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) [2022-07-21 08:06:36,085 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 [2022-07-21 08:06:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:06:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:06:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:06:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:06:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:06:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:06:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:06:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:06:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:06:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:06:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:06:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:06:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:06:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:06:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:06:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:06:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:06:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:06:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:06:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:06:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:06:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:06:36,121 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:06:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:06:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:06:36,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:06:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:06:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:06:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:06:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:06:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:06:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:06:36,220 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:06:36,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:06:36,904 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:06:36,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:06:36,918 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-21 08:06:36,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:06:36 BoogieIcfgContainer [2022-07-21 08:06:36,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:06:36,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:06:36,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:06:36,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:06:36,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:06:35" (1/3) ... [2022-07-21 08:06:36,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a5a8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:06:36, skipping insertion in model container [2022-07-21 08:06:36,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:35" (2/3) ... [2022-07-21 08:06:36,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a5a8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:06:36, skipping insertion in model container [2022-07-21 08:06:36,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:06:36" (3/3) ... [2022-07-21 08:06:36,928 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2022-07-21 08:06:36,940 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:06:36,940 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:06:37,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:06:37,020 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38493801, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@758298b [2022-07-21 08:06:37,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:06:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 306 states have (on average 1.6143790849673203) internal successors, (494), 312 states have internal predecessors, (494), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 08:06:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:37,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:37,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:37,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2006337748, now seen corresponding path program 1 times [2022-07-21 08:06:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:37,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263021430] [2022-07-21 08:06:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:37,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263021430] [2022-07-21 08:06:37,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263021430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:37,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:37,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:06:37,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272114613] [2022-07-21 08:06:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:37,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:06:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:37,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:06:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:37,442 INFO L87 Difference]: Start difference. First operand has 358 states, 306 states have (on average 1.6143790849673203) internal successors, (494), 312 states have internal predecessors, (494), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:38,094 INFO L93 Difference]: Finished difference Result 712 states and 1119 transitions. [2022-07-21 08:06:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:06:38,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:06:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:38,115 INFO L225 Difference]: With dead ends: 712 [2022-07-21 08:06:38,115 INFO L226 Difference]: Without dead ends: 366 [2022-07-21 08:06:38,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:06:38,128 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 770 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:38,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1197 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:06:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-21 08:06:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 348. [2022-07-21 08:06:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 35 states have call successors, (35), 14 states have call predecessors, (35), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-21 08:06:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 521 transitions. [2022-07-21 08:06:38,202 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 521 transitions. Word has length 65 [2022-07-21 08:06:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:38,203 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 521 transitions. [2022-07-21 08:06:38,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 521 transitions. [2022-07-21 08:06:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:38,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:38,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:38,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:06:38,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:38,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2047012498, now seen corresponding path program 1 times [2022-07-21 08:06:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:38,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399209917] [2022-07-21 08:06:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:38,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:38,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399209917] [2022-07-21 08:06:38,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399209917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:38,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:38,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:06:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855249414] [2022-07-21 08:06:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:06:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:06:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:06:38,327 INFO L87 Difference]: Start difference. First operand 348 states and 521 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:39,208 INFO L93 Difference]: Finished difference Result 571 states and 835 transitions. [2022-07-21 08:06:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:06:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:06:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:39,216 INFO L225 Difference]: With dead ends: 571 [2022-07-21 08:06:39,216 INFO L226 Difference]: Without dead ends: 483 [2022-07-21 08:06:39,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:06:39,220 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 652 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:39,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1939 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:06:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-21 08:06:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 444. [2022-07-21 08:06:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 374 states have (on average 1.4893048128342246) internal successors, (557), 380 states have internal predecessors, (557), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-21 08:06:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 652 transitions. [2022-07-21 08:06:39,259 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 652 transitions. Word has length 65 [2022-07-21 08:06:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:39,259 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 652 transitions. [2022-07-21 08:06:39,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 652 transitions. [2022-07-21 08:06:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:39,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:39,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:06:39,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash -368123858, now seen corresponding path program 1 times [2022-07-21 08:06:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:39,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594012277] [2022-07-21 08:06:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594012277] [2022-07-21 08:06:39,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594012277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:39,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:39,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:06:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000693981] [2022-07-21 08:06:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:39,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:06:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:06:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:06:39,374 INFO L87 Difference]: Start difference. First operand 444 states and 652 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:40,282 INFO L93 Difference]: Finished difference Result 791 states and 1128 transitions. [2022-07-21 08:06:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:06:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:06:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:40,287 INFO L225 Difference]: With dead ends: 791 [2022-07-21 08:06:40,287 INFO L226 Difference]: Without dead ends: 614 [2022-07-21 08:06:40,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:06:40,289 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1034 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:40,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1776 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:06:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-21 08:06:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 540. [2022-07-21 08:06:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 450 states have (on average 1.4666666666666666) internal successors, (660), 458 states have internal predecessors, (660), 57 states have call successors, (57), 28 states have call predecessors, (57), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-21 08:06:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 785 transitions. [2022-07-21 08:06:40,352 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 785 transitions. Word has length 65 [2022-07-21 08:06:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:40,352 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 785 transitions. [2022-07-21 08:06:40,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 785 transitions. [2022-07-21 08:06:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:40,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:40,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:40,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:06:40,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257328, now seen corresponding path program 1 times [2022-07-21 08:06:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108994166] [2022-07-21 08:06:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:40,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108994166] [2022-07-21 08:06:40,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108994166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:40,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:40,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:06:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043105314] [2022-07-21 08:06:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:06:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:06:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:40,504 INFO L87 Difference]: Start difference. First operand 540 states and 785 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:41,334 INFO L93 Difference]: Finished difference Result 867 states and 1239 transitions. [2022-07-21 08:06:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:06:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:06:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:41,338 INFO L225 Difference]: With dead ends: 867 [2022-07-21 08:06:41,338 INFO L226 Difference]: Without dead ends: 600 [2022-07-21 08:06:41,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:06:41,340 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 659 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:41,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 2026 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:06:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-07-21 08:06:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 555. [2022-07-21 08:06:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 462 states have (on average 1.4545454545454546) internal successors, (672), 470 states have internal predecessors, (672), 57 states have call successors, (57), 28 states have call predecessors, (57), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-21 08:06:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 800 transitions. [2022-07-21 08:06:41,366 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 800 transitions. Word has length 65 [2022-07-21 08:06:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:41,366 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 800 transitions. [2022-07-21 08:06:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 800 transitions. [2022-07-21 08:06:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:41,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:41,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:41,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:06:41,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash 512053934, now seen corresponding path program 1 times [2022-07-21 08:06:41,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:41,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76019079] [2022-07-21 08:06:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:41,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76019079] [2022-07-21 08:06:41,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76019079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:41,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:41,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:06:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613820812] [2022-07-21 08:06:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:41,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:06:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:06:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:41,495 INFO L87 Difference]: Start difference. First operand 555 states and 800 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:42,303 INFO L93 Difference]: Finished difference Result 873 states and 1232 transitions. [2022-07-21 08:06:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:06:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:06:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:42,306 INFO L225 Difference]: With dead ends: 873 [2022-07-21 08:06:42,306 INFO L226 Difference]: Without dead ends: 591 [2022-07-21 08:06:42,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:06:42,307 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 669 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:42,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2024 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:06:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-21 08:06:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 560. [2022-07-21 08:06:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 466 states have (on average 1.446351931330472) internal successors, (674), 474 states have internal predecessors, (674), 57 states have call successors, (57), 28 states have call predecessors, (57), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-21 08:06:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 803 transitions. [2022-07-21 08:06:42,336 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 803 transitions. Word has length 65 [2022-07-21 08:06:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:42,336 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 803 transitions. [2022-07-21 08:06:42,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 803 transitions. [2022-07-21 08:06:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:42,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:42,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:42,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:06:42,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:42,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -517305364, now seen corresponding path program 1 times [2022-07-21 08:06:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216865255] [2022-07-21 08:06:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:42,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216865255] [2022-07-21 08:06:42,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216865255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:42,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:42,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:06:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086022925] [2022-07-21 08:06:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:06:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:06:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:42,459 INFO L87 Difference]: Start difference. First operand 560 states and 803 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:06:44,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:44,005 INFO L93 Difference]: Finished difference Result 1916 states and 2644 transitions. [2022-07-21 08:06:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:06:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-21 08:06:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:44,012 INFO L225 Difference]: With dead ends: 1916 [2022-07-21 08:06:44,012 INFO L226 Difference]: Without dead ends: 1611 [2022-07-21 08:06:44,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:06:44,014 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 2741 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:44,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 2277 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:06:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-07-21 08:06:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1476. [2022-07-21 08:06:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1193 states have (on average 1.363788767812238) internal successors, (1627), 1216 states have internal predecessors, (1627), 145 states have call successors, (145), 111 states have call predecessors, (145), 136 states have return successors, (189), 151 states have call predecessors, (189), 143 states have call successors, (189) [2022-07-21 08:06:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1961 transitions. [2022-07-21 08:06:44,081 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1961 transitions. Word has length 65 [2022-07-21 08:06:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:44,082 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 1961 transitions. [2022-07-21 08:06:44,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:06:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1961 transitions. [2022-07-21 08:06:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:06:44,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:44,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:44,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:06:44,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash 462107460, now seen corresponding path program 1 times [2022-07-21 08:06:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747874673] [2022-07-21 08:06:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:44,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:44,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747874673] [2022-07-21 08:06:44,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747874673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:44,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:44,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:06:44,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458286000] [2022-07-21 08:06:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:44,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:06:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:06:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:44,154 INFO L87 Difference]: Start difference. First operand 1476 states and 1961 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:44,604 INFO L93 Difference]: Finished difference Result 3939 states and 5106 transitions. [2022-07-21 08:06:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:06:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:06:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:44,617 INFO L225 Difference]: With dead ends: 3939 [2022-07-21 08:06:44,617 INFO L226 Difference]: Without dead ends: 2725 [2022-07-21 08:06:44,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:06:44,625 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1514 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:44,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 996 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:06:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-07-21 08:06:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2585. [2022-07-21 08:06:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2046 states have (on average 1.3064516129032258) internal successors, (2673), 2090 states have internal predecessors, (2673), 267 states have call successors, (267), 215 states have call predecessors, (267), 270 states have return successors, (393), 282 states have call predecessors, (393), 265 states have call successors, (393) [2022-07-21 08:06:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3333 transitions. [2022-07-21 08:06:44,756 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3333 transitions. Word has length 65 [2022-07-21 08:06:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:44,757 INFO L495 AbstractCegarLoop]: Abstraction has 2585 states and 3333 transitions. [2022-07-21 08:06:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:06:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3333 transitions. [2022-07-21 08:06:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:06:44,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:44,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:06:44,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2123328339, now seen corresponding path program 1 times [2022-07-21 08:06:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:44,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479473933] [2022-07-21 08:06:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:44,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479473933] [2022-07-21 08:06:44,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479473933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:44,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:44,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:06:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658460784] [2022-07-21 08:06:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:06:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:06:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:44,826 INFO L87 Difference]: Start difference. First operand 2585 states and 3333 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:45,396 INFO L93 Difference]: Finished difference Result 5877 states and 7495 transitions. [2022-07-21 08:06:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:06:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-21 08:06:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:45,412 INFO L225 Difference]: With dead ends: 5877 [2022-07-21 08:06:45,412 INFO L226 Difference]: Without dead ends: 3554 [2022-07-21 08:06:45,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:06:45,419 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 874 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:45,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1213 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:06:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-07-21 08:06:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3270. [2022-07-21 08:06:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 2578 states have (on average 1.2936384794414275) internal successors, (3335), 2628 states have internal predecessors, (3335), 341 states have call successors, (341), 279 states have call predecessors, (341), 349 states have return successors, (485), 365 states have call predecessors, (485), 339 states have call successors, (485) [2022-07-21 08:06:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4161 transitions. [2022-07-21 08:06:45,595 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4161 transitions. Word has length 66 [2022-07-21 08:06:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:45,596 INFO L495 AbstractCegarLoop]: Abstraction has 3270 states and 4161 transitions. [2022-07-21 08:06:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4161 transitions. [2022-07-21 08:06:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 08:06:45,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:45,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:06:45,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 534392178, now seen corresponding path program 1 times [2022-07-21 08:06:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:45,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693916428] [2022-07-21 08:06:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:45,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693916428] [2022-07-21 08:06:45,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693916428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:45,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:45,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:06:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149123342] [2022-07-21 08:06:45,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:06:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:06:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:45,672 INFO L87 Difference]: Start difference. First operand 3270 states and 4161 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:46,132 INFO L93 Difference]: Finished difference Result 6825 states and 8577 transitions. [2022-07-21 08:06:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:06:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 08:06:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:46,152 INFO L225 Difference]: With dead ends: 6825 [2022-07-21 08:06:46,152 INFO L226 Difference]: Without dead ends: 3816 [2022-07-21 08:06:46,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:06:46,161 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 962 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:46,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1293 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:06:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2022-07-21 08:06:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3553. [2022-07-21 08:06:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 2803 states have (on average 1.2854084909026045) internal successors, (3603), 2856 states have internal predecessors, (3603), 369 states have call successors, (369), 304 states have call predecessors, (369), 379 states have return successors, (519), 395 states have call predecessors, (519), 367 states have call successors, (519) [2022-07-21 08:06:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 4491 transitions. [2022-07-21 08:06:46,328 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 4491 transitions. Word has length 72 [2022-07-21 08:06:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:46,328 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 4491 transitions. [2022-07-21 08:06:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:06:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 4491 transitions. [2022-07-21 08:06:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:06:46,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:46,330 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:46,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:06:46,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1130274590, now seen corresponding path program 1 times [2022-07-21 08:06:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:46,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446153502] [2022-07-21 08:06:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:46,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446153502] [2022-07-21 08:06:46,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446153502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:46,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:46,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:06:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633839605] [2022-07-21 08:06:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:46,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:06:46,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:06:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:46,413 INFO L87 Difference]: Start difference. First operand 3553 states and 4491 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:06:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:46,945 INFO L93 Difference]: Finished difference Result 4617 states and 5769 transitions. [2022-07-21 08:06:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:06:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-21 08:06:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:46,965 INFO L225 Difference]: With dead ends: 4617 [2022-07-21 08:06:46,965 INFO L226 Difference]: Without dead ends: 4614 [2022-07-21 08:06:46,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:06:46,968 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1712 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 1033 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:06:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2022-07-21 08:06:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4290. [2022-07-21 08:06:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 3365 states have (on average 1.2736998514115898) internal successors, (4286), 3425 states have internal predecessors, (4286), 450 states have call successors, (450), 374 states have call predecessors, (450), 473 states have return successors, (643), 493 states have call predecessors, (643), 449 states have call successors, (643) [2022-07-21 08:06:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 5379 transitions. [2022-07-21 08:06:47,174 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 5379 transitions. Word has length 73 [2022-07-21 08:06:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:47,175 INFO L495 AbstractCegarLoop]: Abstraction has 4290 states and 5379 transitions. [2022-07-21 08:06:47,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:06:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 5379 transitions. [2022-07-21 08:06:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:06:47,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:47,177 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:47,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:06:47,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash -679840836, now seen corresponding path program 1 times [2022-07-21 08:06:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:47,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952201918] [2022-07-21 08:06:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952201918] [2022-07-21 08:06:47,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952201918] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705126541] [2022-07-21 08:06:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:47,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:47,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:47,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:06:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:47,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:06:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:47,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:06:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:48,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705126541] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:06:48,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:06:48,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:06:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420730981] [2022-07-21 08:06:48,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:06:48,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:06:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:06:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:48,005 INFO L87 Difference]: Start difference. First operand 4290 states and 5379 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:06:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:49,630 INFO L93 Difference]: Finished difference Result 8661 states and 10712 transitions. [2022-07-21 08:06:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:06:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-21 08:06:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:49,680 INFO L225 Difference]: With dead ends: 8661 [2022-07-21 08:06:49,681 INFO L226 Difference]: Without dead ends: 8658 [2022-07-21 08:06:49,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-21 08:06:49,686 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1774 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:49,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 1935 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:06:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2022-07-21 08:06:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 7749. [2022-07-21 08:06:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7749 states, 6070 states have (on average 1.2606260296540361) internal successors, (7652), 6181 states have internal predecessors, (7652), 810 states have call successors, (810), 689 states have call predecessors, (810), 867 states have return successors, (1169), 881 states have call predecessors, (1169), 809 states have call successors, (1169) [2022-07-21 08:06:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7749 states to 7749 states and 9631 transitions. [2022-07-21 08:06:50,193 INFO L78 Accepts]: Start accepts. Automaton has 7749 states and 9631 transitions. Word has length 74 [2022-07-21 08:06:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:50,194 INFO L495 AbstractCegarLoop]: Abstraction has 7749 states and 9631 transitions. [2022-07-21 08:06:50,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:06:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7749 states and 9631 transitions. [2022-07-21 08:06:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:06:50,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:50,196 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:50,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 08:06:50,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash 669680098, now seen corresponding path program 2 times [2022-07-21 08:06:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934421945] [2022-07-21 08:06:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:50,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934421945] [2022-07-21 08:06:50,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934421945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:50,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:50,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:06:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154192393] [2022-07-21 08:06:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:06:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:06:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:50,471 INFO L87 Difference]: Start difference. First operand 7749 states and 9631 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:06:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:51,001 INFO L93 Difference]: Finished difference Result 10746 states and 13347 transitions. [2022-07-21 08:06:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:06:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-21 08:06:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:51,030 INFO L225 Difference]: With dead ends: 10746 [2022-07-21 08:06:51,030 INFO L226 Difference]: Without dead ends: 4128 [2022-07-21 08:06:51,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:51,044 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1132 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:51,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1101 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:06:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-07-21 08:06:51,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3094. [2022-07-21 08:06:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2449 states have (on average 1.2580645161290323) internal successors, (3081), 2482 states have internal predecessors, (3081), 326 states have call successors, (326), 270 states have call predecessors, (326), 317 states have return successors, (427), 344 states have call predecessors, (427), 325 states have call successors, (427) [2022-07-21 08:06:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3834 transitions. [2022-07-21 08:06:51,216 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3834 transitions. Word has length 77 [2022-07-21 08:06:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:51,216 INFO L495 AbstractCegarLoop]: Abstraction has 3094 states and 3834 transitions. [2022-07-21 08:06:51,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:06:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3834 transitions. [2022-07-21 08:06:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:06:51,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:51,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:51,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:06:51,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:51,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:51,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1857100594, now seen corresponding path program 1 times [2022-07-21 08:06:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:51,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238391564] [2022-07-21 08:06:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:06:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:06:51,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:51,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238391564] [2022-07-21 08:06:51,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238391564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:51,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:51,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:06:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436232787] [2022-07-21 08:06:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:51,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:06:51,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:06:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:06:51,299 INFO L87 Difference]: Start difference. First operand 3094 states and 3834 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:06:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:52,451 INFO L93 Difference]: Finished difference Result 8804 states and 10780 transitions. [2022-07-21 08:06:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:06:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-21 08:06:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:52,473 INFO L225 Difference]: With dead ends: 8804 [2022-07-21 08:06:52,474 INFO L226 Difference]: Without dead ends: 5972 [2022-07-21 08:06:52,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:06:52,482 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 914 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:52,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2090 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:06:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2022-07-21 08:06:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 5663. [2022-07-21 08:06:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5663 states, 4383 states have (on average 1.2233629933835273) internal successors, (5362), 4503 states have internal predecessors, (5362), 623 states have call successors, (623), 524 states have call predecessors, (623), 655 states have return successors, (932), 640 states have call predecessors, (932), 622 states have call successors, (932) [2022-07-21 08:06:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 6917 transitions. [2022-07-21 08:06:52,785 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 6917 transitions. Word has length 84 [2022-07-21 08:06:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:52,785 INFO L495 AbstractCegarLoop]: Abstraction has 5663 states and 6917 transitions. [2022-07-21 08:06:52,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:06:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 6917 transitions. [2022-07-21 08:06:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:06:52,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:52,789 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:52,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:06:52,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash 887628672, now seen corresponding path program 1 times [2022-07-21 08:06:52,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:52,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132334543] [2022-07-21 08:06:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:52,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:06:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:06:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132334543] [2022-07-21 08:06:52,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132334543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:52,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:52,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:06:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135689234] [2022-07-21 08:06:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:06:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:06:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:52,870 INFO L87 Difference]: Start difference. First operand 5663 states and 6917 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:06:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:54,090 INFO L93 Difference]: Finished difference Result 8690 states and 10600 transitions. [2022-07-21 08:06:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:06:54,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-21 08:06:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:54,112 INFO L225 Difference]: With dead ends: 8690 [2022-07-21 08:06:54,113 INFO L226 Difference]: Without dead ends: 4152 [2022-07-21 08:06:54,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:06:54,126 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1553 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:54,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1841 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:06:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2022-07-21 08:06:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 3775. [2022-07-21 08:06:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2925 states have (on average 1.2126495726495727) internal successors, (3547), 3007 states have internal predecessors, (3547), 411 states have call successors, (411), 339 states have call predecessors, (411), 437 states have return successors, (581), 433 states have call predecessors, (581), 410 states have call successors, (581) [2022-07-21 08:06:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4539 transitions. [2022-07-21 08:06:54,333 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4539 transitions. Word has length 93 [2022-07-21 08:06:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:54,333 INFO L495 AbstractCegarLoop]: Abstraction has 3775 states and 4539 transitions. [2022-07-21 08:06:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:06:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4539 transitions. [2022-07-21 08:06:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:06:54,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:54,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:54,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:06:54,338 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash 521017431, now seen corresponding path program 1 times [2022-07-21 08:06:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:54,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504561944] [2022-07-21 08:06:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:54,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:06:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:06:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:06:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:54,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504561944] [2022-07-21 08:06:54,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504561944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:54,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:54,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:06:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130625445] [2022-07-21 08:06:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:06:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:06:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:06:54,458 INFO L87 Difference]: Start difference. First operand 3775 states and 4539 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:06:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:55,520 INFO L93 Difference]: Finished difference Result 4105 states and 5065 transitions. [2022-07-21 08:06:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:06:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 123 [2022-07-21 08:06:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:55,532 INFO L225 Difference]: With dead ends: 4105 [2022-07-21 08:06:55,532 INFO L226 Difference]: Without dead ends: 3862 [2022-07-21 08:06:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:55,535 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 754 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 982 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:06:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2022-07-21 08:06:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3775. [2022-07-21 08:06:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2925 states have (on average 1.2123076923076923) internal successors, (3546), 3007 states have internal predecessors, (3546), 411 states have call successors, (411), 339 states have call predecessors, (411), 437 states have return successors, (581), 433 states have call predecessors, (581), 410 states have call successors, (581) [2022-07-21 08:06:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4538 transitions. [2022-07-21 08:06:55,823 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4538 transitions. Word has length 123 [2022-07-21 08:06:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:55,824 INFO L495 AbstractCegarLoop]: Abstraction has 3775 states and 4538 transitions. [2022-07-21 08:06:55,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:06:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4538 transitions. [2022-07-21 08:06:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:06:55,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:55,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:55,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:06:55,828 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 49661081, now seen corresponding path program 1 times [2022-07-21 08:06:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:55,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427774342] [2022-07-21 08:06:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:06:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:06:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:06:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:55,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427774342] [2022-07-21 08:06:55,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427774342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:55,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:55,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:06:55,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541777092] [2022-07-21 08:06:55,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:55,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:06:55,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:06:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:55,921 INFO L87 Difference]: Start difference. First operand 3775 states and 4538 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:06:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:57,751 INFO L93 Difference]: Finished difference Result 4431 states and 5585 transitions. [2022-07-21 08:06:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:06:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2022-07-21 08:06:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:57,763 INFO L225 Difference]: With dead ends: 4431 [2022-07-21 08:06:57,764 INFO L226 Difference]: Without dead ends: 4194 [2022-07-21 08:06:57,765 INFO L412 NwaCegarLoop]: 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 [2022-07-21 08:06:57,765 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1194 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:57,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1363 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:06:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2022-07-21 08:06:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4021. [2022-07-21 08:06:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 3148 states have (on average 1.2379288437102922) internal successors, (3897), 3231 states have internal predecessors, (3897), 427 states have call successors, (427), 345 states have call predecessors, (427), 444 states have return successors, (600), 449 states have call predecessors, (600), 426 states have call successors, (600) [2022-07-21 08:06:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4924 transitions. [2022-07-21 08:06:58,043 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4924 transitions. Word has length 123 [2022-07-21 08:06:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:58,043 INFO L495 AbstractCegarLoop]: Abstraction has 4021 states and 4924 transitions. [2022-07-21 08:06:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:06:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4924 transitions. [2022-07-21 08:06:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:06:58,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:58,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:06:58,048 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -675902947, now seen corresponding path program 1 times [2022-07-21 08:06:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:58,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510285202] [2022-07-21 08:06:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:06:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:06:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:06:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:06:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510285202] [2022-07-21 08:06:58,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510285202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:58,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:58,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:06:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304560112] [2022-07-21 08:06:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:58,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:06:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:06:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:58,157 INFO L87 Difference]: Start difference. First operand 4021 states and 4924 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:00,300 INFO L93 Difference]: Finished difference Result 5019 states and 6514 transitions. [2022-07-21 08:07:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:00,315 INFO L225 Difference]: With dead ends: 5019 [2022-07-21 08:07:00,315 INFO L226 Difference]: Without dead ends: 4536 [2022-07-21 08:07:00,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:00,318 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1203 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:00,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 2210 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-07-21 08:07:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4250. [2022-07-21 08:07:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 3354 states have (on average 1.2564102564102564) internal successors, (4214), 3438 states have internal predecessors, (4214), 443 states have call successors, (443), 351 states have call predecessors, (443), 451 states have return successors, (618), 466 states have call predecessors, (618), 442 states have call successors, (618) [2022-07-21 08:07:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 5275 transitions. [2022-07-21 08:07:00,633 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 5275 transitions. Word has length 123 [2022-07-21 08:07:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:00,633 INFO L495 AbstractCegarLoop]: Abstraction has 4250 states and 5275 transitions. [2022-07-21 08:07:00,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 5275 transitions. [2022-07-21 08:07:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:00,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:00,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:00,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:07:00,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:00,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash 713391067, now seen corresponding path program 1 times [2022-07-21 08:07:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858606464] [2022-07-21 08:07:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:00,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:00,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858606464] [2022-07-21 08:07:00,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858606464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:00,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:00,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220820495] [2022-07-21 08:07:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:00,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:00,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:00,751 INFO L87 Difference]: Start difference. First operand 4250 states and 5275 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:02,840 INFO L93 Difference]: Finished difference Result 5885 states and 7873 transitions. [2022-07-21 08:07:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:02,854 INFO L225 Difference]: With dead ends: 5885 [2022-07-21 08:07:02,855 INFO L226 Difference]: Without dead ends: 5173 [2022-07-21 08:07:02,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:02,858 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1200 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:02,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 2202 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:07:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2022-07-21 08:07:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4709. [2022-07-21 08:07:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 3767 states have (on average 1.2872312184762411) internal successors, (4849), 3853 states have internal predecessors, (4849), 475 states have call successors, (475), 363 states have call predecessors, (475), 465 states have return successors, (658), 500 states have call predecessors, (658), 474 states have call successors, (658) [2022-07-21 08:07:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 5982 transitions. [2022-07-21 08:07:03,141 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 5982 transitions. Word has length 123 [2022-07-21 08:07:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:03,142 INFO L495 AbstractCegarLoop]: Abstraction has 4709 states and 5982 transitions. [2022-07-21 08:07:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 5982 transitions. [2022-07-21 08:07:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:03,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:03,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:03,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:07:03,147 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1320002979, now seen corresponding path program 1 times [2022-07-21 08:07:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030904416] [2022-07-21 08:07:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:03,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030904416] [2022-07-21 08:07:03,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030904416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:03,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:03,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535809795] [2022-07-21 08:07:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:03,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:03,241 INFO L87 Difference]: Start difference. First operand 4709 states and 5982 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:05,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:05,506 INFO L93 Difference]: Finished difference Result 7552 states and 10476 transitions. [2022-07-21 08:07:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:05,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:05,527 INFO L225 Difference]: With dead ends: 7552 [2022-07-21 08:07:05,528 INFO L226 Difference]: Without dead ends: 6381 [2022-07-21 08:07:05,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:05,534 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1199 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:05,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2196 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2022-07-21 08:07:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5628. [2022-07-21 08:07:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5628 states, 4594 states have (on average 1.3319547235524598) internal successors, (6119), 4684 states have internal predecessors, (6119), 539 states have call successors, (539), 387 states have call predecessors, (539), 493 states have return successors, (744), 568 states have call predecessors, (744), 538 states have call successors, (744) [2022-07-21 08:07:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 7402 transitions. [2022-07-21 08:07:06,028 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 7402 transitions. Word has length 123 [2022-07-21 08:07:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:06,028 INFO L495 AbstractCegarLoop]: Abstraction has 5628 states and 7402 transitions. [2022-07-21 08:07:06,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 7402 transitions. [2022-07-21 08:07:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:06,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:06,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:06,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:07:06,035 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1108255643, now seen corresponding path program 1 times [2022-07-21 08:07:06,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:06,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085010361] [2022-07-21 08:07:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:06,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:06,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085010361] [2022-07-21 08:07:06,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085010361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:06,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:06,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:06,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648096250] [2022-07-21 08:07:06,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:06,166 INFO L87 Difference]: Start difference. First operand 5628 states and 7402 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:08,591 INFO L93 Difference]: Finished difference Result 10878 states and 15686 transitions. [2022-07-21 08:07:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:08,617 INFO L225 Difference]: With dead ends: 10878 [2022-07-21 08:07:08,618 INFO L226 Difference]: Without dead ends: 8788 [2022-07-21 08:07:08,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:08,627 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 1194 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:08,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 2188 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2022-07-21 08:07:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 7480. [2022-07-21 08:07:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7480 states, 6262 states have (on average 1.3866176940274673) internal successors, (8683), 6360 states have internal predecessors, (8683), 667 states have call successors, (667), 435 states have call predecessors, (667), 549 states have return successors, (934), 704 states have call predecessors, (934), 666 states have call successors, (934) [2022-07-21 08:07:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 10284 transitions. [2022-07-21 08:07:09,096 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 10284 transitions. Word has length 123 [2022-07-21 08:07:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:09,097 INFO L495 AbstractCegarLoop]: Abstraction has 7480 states and 10284 transitions. [2022-07-21 08:07:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 10284 transitions. [2022-07-21 08:07:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:09,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:09,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:07:09,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1289214887, now seen corresponding path program 1 times [2022-07-21 08:07:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:09,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655558396] [2022-07-21 08:07:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655558396] [2022-07-21 08:07:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655558396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:09,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:09,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655688524] [2022-07-21 08:07:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:09,189 INFO L87 Difference]: Start difference. First operand 7480 states and 10284 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:10,729 INFO L93 Difference]: Finished difference Result 12778 states and 18729 transitions. [2022-07-21 08:07:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:10,761 INFO L225 Difference]: With dead ends: 12778 [2022-07-21 08:07:10,761 INFO L226 Difference]: Without dead ends: 8836 [2022-07-21 08:07:10,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:10,778 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 928 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1335 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:07:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2022-07-21 08:07:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 7480. [2022-07-21 08:07:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7480 states, 6262 states have (on average 1.3839029064196742) internal successors, (8666), 6360 states have internal predecessors, (8666), 667 states have call successors, (667), 435 states have call predecessors, (667), 549 states have return successors, (934), 704 states have call predecessors, (934), 666 states have call successors, (934) [2022-07-21 08:07:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 10267 transitions. [2022-07-21 08:07:11,273 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 10267 transitions. Word has length 123 [2022-07-21 08:07:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:11,273 INFO L495 AbstractCegarLoop]: Abstraction has 7480 states and 10267 transitions. [2022-07-21 08:07:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 10267 transitions. [2022-07-21 08:07:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:11,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:11,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:07:11,280 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -258173989, now seen corresponding path program 1 times [2022-07-21 08:07:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:11,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777917292] [2022-07-21 08:07:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:11,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777917292] [2022-07-21 08:07:11,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777917292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:11,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:11,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603318372] [2022-07-21 08:07:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:11,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:11,362 INFO L87 Difference]: Start difference. First operand 7480 states and 10267 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:13,713 INFO L93 Difference]: Finished difference Result 17530 states and 26078 transitions. [2022-07-21 08:07:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:13,759 INFO L225 Difference]: With dead ends: 17530 [2022-07-21 08:07:13,759 INFO L226 Difference]: Without dead ends: 13588 [2022-07-21 08:07:13,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:13,778 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1186 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:13,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2177 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:07:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2022-07-21 08:07:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 11214. [2022-07-21 08:07:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11214 states, 9628 states have (on average 1.4347735770668884) internal successors, (13814), 9742 states have internal predecessors, (13814), 923 states have call successors, (923), 531 states have call predecessors, (923), 661 states have return successors, (1368), 976 states have call predecessors, (1368), 922 states have call successors, (1368) [2022-07-21 08:07:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11214 states to 11214 states and 16105 transitions. [2022-07-21 08:07:14,543 INFO L78 Accepts]: Start accepts. Automaton has 11214 states and 16105 transitions. Word has length 123 [2022-07-21 08:07:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 11214 states and 16105 transitions. [2022-07-21 08:07:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11214 states and 16105 transitions. [2022-07-21 08:07:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:14,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:14,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:14,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:07:14,553 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:14,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:14,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2130390041, now seen corresponding path program 1 times [2022-07-21 08:07:14,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:14,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709336882] [2022-07-21 08:07:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:14,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:14,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709336882] [2022-07-21 08:07:14,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709336882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:14,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:14,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063523472] [2022-07-21 08:07:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:14,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:14,644 INFO L87 Difference]: Start difference. First operand 11214 states and 16105 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:16,176 INFO L93 Difference]: Finished difference Result 21362 states and 32316 transitions. [2022-07-21 08:07:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:16,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:16,220 INFO L225 Difference]: With dead ends: 21362 [2022-07-21 08:07:16,221 INFO L226 Difference]: Without dead ends: 13686 [2022-07-21 08:07:16,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:16,244 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1082 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:16,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1144 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13686 states. [2022-07-21 08:07:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13686 to 11214. [2022-07-21 08:07:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11214 states, 9628 states have (on average 1.4313460739509762) internal successors, (13781), 9742 states have internal predecessors, (13781), 923 states have call successors, (923), 531 states have call predecessors, (923), 661 states have return successors, (1368), 976 states have call predecessors, (1368), 922 states have call successors, (1368) [2022-07-21 08:07:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11214 states to 11214 states and 16072 transitions. [2022-07-21 08:07:17,017 INFO L78 Accepts]: Start accepts. Automaton has 11214 states and 16072 transitions. Word has length 123 [2022-07-21 08:07:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:17,018 INFO L495 AbstractCegarLoop]: Abstraction has 11214 states and 16072 transitions. [2022-07-21 08:07:17,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 11214 states and 16072 transitions. [2022-07-21 08:07:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:17,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:17,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:07:17,027 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash -563506149, now seen corresponding path program 1 times [2022-07-21 08:07:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967468536] [2022-07-21 08:07:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:17,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967468536] [2022-07-21 08:07:17,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967468536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:17,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:17,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830458839] [2022-07-21 08:07:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:17,117 INFO L87 Difference]: Start difference. First operand 11214 states and 16072 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:20,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:20,679 INFO L93 Difference]: Finished difference Result 33876 states and 51608 transitions. [2022-07-21 08:07:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:07:20,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:20,741 INFO L225 Difference]: With dead ends: 33876 [2022-07-21 08:07:20,741 INFO L226 Difference]: Without dead ends: 26200 [2022-07-21 08:07:20,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:20,764 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 1429 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:20,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2152 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:07:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26200 states. [2022-07-21 08:07:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26200 to 18488. [2022-07-21 08:07:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18488 states, 16198 states have (on average 1.4693789356710705) internal successors, (23801), 16344 states have internal predecessors, (23801), 1403 states have call successors, (1403), 723 states have call predecessors, (1403), 885 states have return successors, (2366), 1488 states have call predecessors, (2366), 1402 states have call successors, (2366) [2022-07-21 08:07:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18488 states to 18488 states and 27570 transitions. [2022-07-21 08:07:22,142 INFO L78 Accepts]: Start accepts. Automaton has 18488 states and 27570 transitions. Word has length 123 [2022-07-21 08:07:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:22,142 INFO L495 AbstractCegarLoop]: Abstraction has 18488 states and 27570 transitions. [2022-07-21 08:07:22,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18488 states and 27570 transitions. [2022-07-21 08:07:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:22,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:22,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:07:22,154 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1620237351, now seen corresponding path program 1 times [2022-07-21 08:07:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:22,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049365196] [2022-07-21 08:07:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049365196] [2022-07-21 08:07:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049365196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:22,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:22,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939060564] [2022-07-21 08:07:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:22,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:22,249 INFO L87 Difference]: Start difference. First operand 18488 states and 27570 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:27,696 INFO L93 Difference]: Finished difference Result 61996 states and 96400 transitions. [2022-07-21 08:07:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:07:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:27,822 INFO L225 Difference]: With dead ends: 61996 [2022-07-21 08:07:27,822 INFO L226 Difference]: Without dead ends: 47046 [2022-07-21 08:07:27,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:27,870 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1230 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:27,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 2243 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47046 states. [2022-07-21 08:07:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47046 to 33161. [2022-07-21 08:07:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33161 states, 29495 states have (on average 1.4959484658416682) internal successors, (44123), 29705 states have internal predecessors, (44123), 2331 states have call successors, (2331), 1107 states have call predecessors, (2331), 1333 states have return successors, (4816), 2480 states have call predecessors, (4816), 2330 states have call successors, (4816) [2022-07-21 08:07:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33161 states to 33161 states and 51270 transitions. [2022-07-21 08:07:30,353 INFO L78 Accepts]: Start accepts. Automaton has 33161 states and 51270 transitions. Word has length 123 [2022-07-21 08:07:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:30,354 INFO L495 AbstractCegarLoop]: Abstraction has 33161 states and 51270 transitions. [2022-07-21 08:07:30,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 33161 states and 51270 transitions. [2022-07-21 08:07:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:30,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:30,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:07:30,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -268852133, now seen corresponding path program 1 times [2022-07-21 08:07:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:30,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993050498] [2022-07-21 08:07:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:30,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993050498] [2022-07-21 08:07:30,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993050498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:30,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:30,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542036786] [2022-07-21 08:07:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:30,475 INFO L87 Difference]: Start difference. First operand 33161 states and 51270 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:34,479 INFO L93 Difference]: Finished difference Result 71522 states and 114369 transitions. [2022-07-21 08:07:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:34,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:34,599 INFO L225 Difference]: With dead ends: 71522 [2022-07-21 08:07:34,599 INFO L226 Difference]: Without dead ends: 41899 [2022-07-21 08:07:34,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:34,660 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1085 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:34,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1132 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41899 states. [2022-07-21 08:07:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41899 to 33161. [2022-07-21 08:07:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33161 states, 29495 states have (on average 1.4915748431937617) internal successors, (43994), 29705 states have internal predecessors, (43994), 2331 states have call successors, (2331), 1107 states have call predecessors, (2331), 1333 states have return successors, (4816), 2480 states have call predecessors, (4816), 2330 states have call successors, (4816) [2022-07-21 08:07:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33161 states to 33161 states and 51141 transitions. [2022-07-21 08:07:37,262 INFO L78 Accepts]: Start accepts. Automaton has 33161 states and 51141 transitions. Word has length 123 [2022-07-21 08:07:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:37,262 INFO L495 AbstractCegarLoop]: Abstraction has 33161 states and 51141 transitions. [2022-07-21 08:07:37,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 33161 states and 51141 transitions. [2022-07-21 08:07:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:37,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:37,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:37,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:07:37,278 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1887827047, now seen corresponding path program 1 times [2022-07-21 08:07:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:37,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611272846] [2022-07-21 08:07:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:37,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611272846] [2022-07-21 08:07:37,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611272846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:37,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240611432] [2022-07-21 08:07:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:37,382 INFO L87 Difference]: Start difference. First operand 33161 states and 51141 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:46,289 INFO L93 Difference]: Finished difference Result 113623 states and 180458 transitions. [2022-07-21 08:07:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:07:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:07:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:46,520 INFO L225 Difference]: With dead ends: 113623 [2022-07-21 08:07:46,520 INFO L226 Difference]: Without dead ends: 84000 [2022-07-21 08:07:46,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:46,598 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1191 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:46,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 2178 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:07:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84000 states. [2022-07-21 08:07:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84000 to 62700. [2022-07-21 08:07:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62700 states, 56346 states have (on average 1.507826642530082) internal successors, (84960), 56684 states have internal predecessors, (84960), 4123 states have call successors, (4123), 1875 states have call predecessors, (4123), 2229 states have return successors, (11110), 4400 states have call predecessors, (11110), 4122 states have call successors, (11110) [2022-07-21 08:07:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62700 states to 62700 states and 100193 transitions. [2022-07-21 08:07:51,260 INFO L78 Accepts]: Start accepts. Automaton has 62700 states and 100193 transitions. Word has length 123 [2022-07-21 08:07:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:51,260 INFO L495 AbstractCegarLoop]: Abstraction has 62700 states and 100193 transitions. [2022-07-21 08:07:51,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 62700 states and 100193 transitions. [2022-07-21 08:07:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:07:51,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:51,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:51,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:07:51,286 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1916327337, now seen corresponding path program 1 times [2022-07-21 08:07:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:51,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287525689] [2022-07-21 08:07:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:07:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:07:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:07:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287525689] [2022-07-21 08:07:51,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287525689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:51,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:51,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304392256] [2022-07-21 08:07:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:51,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:51,392 INFO L87 Difference]: Start difference. First operand 62700 states and 100193 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:06,995 INFO L93 Difference]: Finished difference Result 218616 states and 357316 transitions. [2022-07-21 08:08:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2022-07-21 08:08:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:07,736 INFO L225 Difference]: With dead ends: 218616 [2022-07-21 08:08:07,737 INFO L226 Difference]: Without dead ends: 159454 [2022-07-21 08:08:07,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:07,857 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1224 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:07,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2129 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:08:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159454 states. [2022-07-21 08:08:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159454 to 121645. [2022-07-21 08:08:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121645 states, 110043 states have (on average 1.5176794525776287) internal successors, (167010), 110637 states have internal predecessors, (167010), 7579 states have call successors, (7579), 3411 states have call predecessors, (7579), 4021 states have return successors, (27944), 8112 states have call predecessors, (27944), 7578 states have call successors, (27944) [2022-07-21 08:08:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121645 states to 121645 states and 202533 transitions. [2022-07-21 08:08:17,804 INFO L78 Accepts]: Start accepts. Automaton has 121645 states and 202533 transitions. Word has length 123 [2022-07-21 08:08:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:17,804 INFO L495 AbstractCegarLoop]: Abstraction has 121645 states and 202533 transitions. [2022-07-21 08:08:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 121645 states and 202533 transitions. [2022-07-21 08:08:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:08:17,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:17,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:08:17,844 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 438057945, now seen corresponding path program 1 times [2022-07-21 08:08:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:17,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791962264] [2022-07-21 08:08:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:08:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:08:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:08:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:17,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:17,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791962264] [2022-07-21 08:08:17,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791962264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:17,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:17,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473669969] [2022-07-21 08:08:17,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:17,947 INFO L87 Difference]: Start difference. First operand 121645 states and 202533 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)