./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:18:25,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:18:25,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:18:25,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:18:25,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:18:25,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:18:25,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:18:25,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:18:25,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:18:25,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:18:25,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:18:25,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:18:25,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:18:25,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:18:25,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:18:25,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:18:25,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:18:25,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:18:25,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:18:25,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:18:25,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:18:25,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:18:25,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:18:25,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:18:25,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:18:25,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:18:25,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:18:25,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:18:25,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:18:25,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:18:25,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:18:25,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:18:25,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:18:25,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:18:25,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:18:25,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:18:25,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:18:25,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:18:25,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:18:25,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:18:25,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:18:25,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:18:25,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:18:25,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:18:25,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:18:25,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:18:25,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:18:25,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:18:25,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:18:25,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:18:25,115 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:18:25,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:18:25,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:18:25,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:18:25,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:18:25,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:18:25,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:18:25,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:18:25,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:18:25,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:18:25,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:18:25,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 [2021-12-14 16:18:25,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:18:25,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:18:25,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:18:25,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:18:25,383 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:18:25,384 INFO L432 ainManager$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 [2021-12-14 16:18:25,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784aeab3/b8669f2392f84052932051d078a9d13c/FLAG198efc9b7 [2021-12-14 16:18:25,826 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:18:25,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2021-12-14 16:18:25,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784aeab3/b8669f2392f84052932051d078a9d13c/FLAG198efc9b7 [2021-12-14 16:18:26,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784aeab3/b8669f2392f84052932051d078a9d13c [2021-12-14 16:18:26,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:18:26,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:18:26,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:18:26,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:18:26,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:18:26,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c45660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26, skipping insertion in model container [2021-12-14 16:18:26,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:18:26,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:18:26,387 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] [2021-12-14 16:18:26,431 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] [2021-12-14 16:18:26,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:18:26,522 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:18:26,530 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] [2021-12-14 16:18:26,541 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] [2021-12-14 16:18:26,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:18:26,618 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:18:26,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26 WrapperNode [2021-12-14 16:18:26,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:18:26,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:18:26,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:18:26,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:18:26,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,668 INFO L137 Inliner]: procedures = 67, calls = 78, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 750 [2021-12-14 16:18:26,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:18:26,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:18:26,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:18:26,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:18:26,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:18:26,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:18:26,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:18:26,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:18:26,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (1/1) ... [2021-12-14 16:18:26,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:18:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:18:26,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 16:18:26,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 16:18:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:18:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 16:18:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 16:18:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-14 16:18:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-14 16:18:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-14 16:18:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-14 16:18:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-14 16:18:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-14 16:18:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-14 16:18:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-14 16:18:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:18:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-14 16:18:26,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-14 16:18:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-14 16:18:26,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-14 16:18:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:18:26,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:18:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-14 16:18:26,798 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-14 16:18:26,878 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:18:26,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:18:27,390 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:18:27,397 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:18:27,397 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-14 16:18:27,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:18:27 BoogieIcfgContainer [2021-12-14 16:18:27,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:18:27,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:18:27,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:18:27,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:18:27,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:18:26" (1/3) ... [2021-12-14 16:18:27,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7372200b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:18:27, skipping insertion in model container [2021-12-14 16:18:27,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:18:26" (2/3) ... [2021-12-14 16:18:27,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7372200b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:18:27, skipping insertion in model container [2021-12-14 16:18:27,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:18:27" (3/3) ... [2021-12-14 16:18:27,405 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2021-12-14 16:18:27,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:18:27,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:18:27,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:18:27,449 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:18:27,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:18:27,471 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) [2021-12-14 16:18:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:27,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:27,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:27,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2006337748, now seen corresponding path program 1 times [2021-12-14 16:18:27,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:27,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513125958] [2021-12-14 16:18:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:27,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:27,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513125958] [2021-12-14 16:18:27,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513125958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:27,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:27,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:18:27,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259919487] [2021-12-14 16:18:27,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:27,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:18:27,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:18:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:18:27,773 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) [2021-12-14 16:18:28,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:28,284 INFO L93 Difference]: Finished difference Result 712 states and 1119 transitions. [2021-12-14 16:18:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:18:28,286 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 [2021-12-14 16:18:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:28,295 INFO L225 Difference]: With dead ends: 712 [2021-12-14 16:18:28,295 INFO L226 Difference]: Without dead ends: 366 [2021-12-14 16:18:28,299 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:28,302 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 770 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:28,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1223 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 16:18:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-14 16:18:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 348. [2021-12-14 16:18:28,351 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) [2021-12-14 16:18:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 521 transitions. [2021-12-14 16:18:28,354 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 521 transitions. Word has length 65 [2021-12-14 16:18:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:28,355 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 521 transitions. [2021-12-14 16:18:28,355 INFO L471 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) [2021-12-14 16:18:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 521 transitions. [2021-12-14 16:18:28,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:28,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:28,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:28,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:18:28,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2047012498, now seen corresponding path program 1 times [2021-12-14 16:18:28,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:28,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465383933] [2021-12-14 16:18:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:28,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:28,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:28,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465383933] [2021-12-14 16:18:28,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465383933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:28,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:28,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:18:28,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828303717] [2021-12-14 16:18:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:28,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:18:28,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:18:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:18:28,475 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) [2021-12-14 16:18:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:29,121 INFO L93 Difference]: Finished difference Result 571 states and 835 transitions. [2021-12-14 16:18:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:29,122 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 [2021-12-14 16:18:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:29,125 INFO L225 Difference]: With dead ends: 571 [2021-12-14 16:18:29,125 INFO L226 Difference]: Without dead ends: 483 [2021-12-14 16:18:29,126 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:29,127 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 652 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:29,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1988 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:18:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-14 16:18:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 444. [2021-12-14 16:18:29,151 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) [2021-12-14 16:18:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 652 transitions. [2021-12-14 16:18:29,154 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 652 transitions. Word has length 65 [2021-12-14 16:18:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:29,154 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 652 transitions. [2021-12-14 16:18:29,155 INFO L471 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) [2021-12-14 16:18:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 652 transitions. [2021-12-14 16:18:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:29,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:29,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:29,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:18:29,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -368123858, now seen corresponding path program 1 times [2021-12-14 16:18:29,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:29,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36106993] [2021-12-14 16:18:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:29,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:29,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36106993] [2021-12-14 16:18:29,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36106993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:29,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:29,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:18:29,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687884120] [2021-12-14 16:18:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:29,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:18:29,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:18:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:18:29,285 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) [2021-12-14 16:18:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:29,980 INFO L93 Difference]: Finished difference Result 791 states and 1128 transitions. [2021-12-14 16:18:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 16:18:29,980 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 [2021-12-14 16:18:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:29,984 INFO L225 Difference]: With dead ends: 791 [2021-12-14 16:18:29,984 INFO L226 Difference]: Without dead ends: 614 [2021-12-14 16:18:29,985 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:29,985 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1034 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:29,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 1814 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:18:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-14 16:18:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 540. [2021-12-14 16:18:30,012 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) [2021-12-14 16:18:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 785 transitions. [2021-12-14 16:18:30,015 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 785 transitions. Word has length 65 [2021-12-14 16:18:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:30,015 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 785 transitions. [2021-12-14 16:18:30,015 INFO L471 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) [2021-12-14 16:18:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 785 transitions. [2021-12-14 16:18:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:30,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:30,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:18:30,018 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257328, now seen corresponding path program 1 times [2021-12-14 16:18:30,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:30,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171447199] [2021-12-14 16:18:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:30,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:30,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171447199] [2021-12-14 16:18:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171447199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:30,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:18:30,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641806239] [2021-12-14 16:18:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:18:30,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:18:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:18:30,101 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) [2021-12-14 16:18:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:30,689 INFO L93 Difference]: Finished difference Result 867 states and 1239 transitions. [2021-12-14 16:18:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 16:18:30,690 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 [2021-12-14 16:18:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:30,693 INFO L225 Difference]: With dead ends: 867 [2021-12-14 16:18:30,693 INFO L226 Difference]: Without dead ends: 600 [2021-12-14 16:18:30,694 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:30,694 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 659 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:30,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 2177 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:18:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-14 16:18:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 555. [2021-12-14 16:18:30,731 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) [2021-12-14 16:18:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 800 transitions. [2021-12-14 16:18:30,734 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 800 transitions. Word has length 65 [2021-12-14 16:18:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:30,734 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 800 transitions. [2021-12-14 16:18:30,734 INFO L471 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) [2021-12-14 16:18:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 800 transitions. [2021-12-14 16:18:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:30,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:30,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:30,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:18:30,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 512053934, now seen corresponding path program 1 times [2021-12-14 16:18:30,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98893366] [2021-12-14 16:18:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:30,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:30,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98893366] [2021-12-14 16:18:30,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98893366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:30,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:30,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:18:30,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572103506] [2021-12-14 16:18:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:30,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:18:30,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:18:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:18:30,849 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) [2021-12-14 16:18:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:31,452 INFO L93 Difference]: Finished difference Result 873 states and 1232 transitions. [2021-12-14 16:18:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:18:31,453 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 [2021-12-14 16:18:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:31,455 INFO L225 Difference]: With dead ends: 873 [2021-12-14 16:18:31,455 INFO L226 Difference]: Without dead ends: 591 [2021-12-14 16:18:31,456 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:31,457 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 669 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:31,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 2165 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:18:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-14 16:18:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 560. [2021-12-14 16:18:31,473 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) [2021-12-14 16:18:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 803 transitions. [2021-12-14 16:18:31,476 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 803 transitions. Word has length 65 [2021-12-14 16:18:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:31,476 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 803 transitions. [2021-12-14 16:18:31,477 INFO L471 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) [2021-12-14 16:18:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 803 transitions. [2021-12-14 16:18:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:31,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:31,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:31,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:18:31,478 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash -517305364, now seen corresponding path program 1 times [2021-12-14 16:18:31,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:31,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613084344] [2021-12-14 16:18:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:31,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:31,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613084344] [2021-12-14 16:18:31,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613084344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:31,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:31,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 16:18:31,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577408310] [2021-12-14 16:18:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:31,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 16:18:31,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 16:18:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:18:31,580 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) [2021-12-14 16:18:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:32,841 INFO L93 Difference]: Finished difference Result 1916 states and 2644 transitions. [2021-12-14 16:18:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-14 16:18:32,842 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 [2021-12-14 16:18:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:32,847 INFO L225 Difference]: With dead ends: 1916 [2021-12-14 16:18:32,847 INFO L226 Difference]: Without dead ends: 1611 [2021-12-14 16:18:32,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-14 16:18:32,849 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 2741 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:32,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2760 Valid, 2297 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 16:18:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-12-14 16:18:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1476. [2021-12-14 16:18:32,903 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) [2021-12-14 16:18:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1961 transitions. [2021-12-14 16:18:32,909 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1961 transitions. Word has length 65 [2021-12-14 16:18:32,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:32,909 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1961 transitions. [2021-12-14 16:18:32,909 INFO L471 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) [2021-12-14 16:18:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1961 transitions. [2021-12-14 16:18:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:18:32,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:32,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:32,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:18:32,911 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash 462107460, now seen corresponding path program 1 times [2021-12-14 16:18:32,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:32,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994368476] [2021-12-14 16:18:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:32,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:32,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994368476] [2021-12-14 16:18:32,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994368476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:32,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:32,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:32,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512826419] [2021-12-14 16:18:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:32,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:32,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:32,995 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) [2021-12-14 16:18:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:33,322 INFO L93 Difference]: Finished difference Result 3939 states and 5106 transitions. [2021-12-14 16:18:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 16:18:33,323 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 [2021-12-14 16:18:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:33,333 INFO L225 Difference]: With dead ends: 3939 [2021-12-14 16:18:33,334 INFO L226 Difference]: Without dead ends: 2725 [2021-12-14 16:18:33,336 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:33,339 INFO L933 BasicCegarLoop]: 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:33,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 996 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:18:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-12-14 16:18:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 2585. [2021-12-14 16:18:33,420 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) [2021-12-14 16:18:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3333 transitions. [2021-12-14 16:18:33,429 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3333 transitions. Word has length 65 [2021-12-14 16:18:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:33,429 INFO L470 AbstractCegarLoop]: Abstraction has 2585 states and 3333 transitions. [2021-12-14 16:18:33,430 INFO L471 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) [2021-12-14 16:18:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3333 transitions. [2021-12-14 16:18:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 16:18:33,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:33,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:33,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:18:33,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2123328339, now seen corresponding path program 1 times [2021-12-14 16:18:33,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:33,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386614690] [2021-12-14 16:18:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:33,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:33,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386614690] [2021-12-14 16:18:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386614690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:33,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:33,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:18:33,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769027006] [2021-12-14 16:18:33,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:33,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:18:33,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:18:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:18:33,520 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) [2021-12-14 16:18:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:33,961 INFO L93 Difference]: Finished difference Result 5877 states and 7495 transitions. [2021-12-14 16:18:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:18:33,962 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 [2021-12-14 16:18:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:33,973 INFO L225 Difference]: With dead ends: 5877 [2021-12-14 16:18:33,974 INFO L226 Difference]: Without dead ends: 3554 [2021-12-14 16:18:33,977 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:33,978 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 874 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:33,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 1244 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 16:18:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2021-12-14 16:18:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3270. [2021-12-14 16:18:34,069 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) [2021-12-14 16:18:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4161 transitions. [2021-12-14 16:18:34,081 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4161 transitions. Word has length 66 [2021-12-14 16:18:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:34,081 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 4161 transitions. [2021-12-14 16:18:34,081 INFO L471 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) [2021-12-14 16:18:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4161 transitions. [2021-12-14 16:18:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 16:18:34,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:34,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:34,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 16:18:34,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:34,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:34,083 INFO L85 PathProgramCache]: Analyzing trace with hash 534392178, now seen corresponding path program 1 times [2021-12-14 16:18:34,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:34,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773286274] [2021-12-14 16:18:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:34,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:34,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773286274] [2021-12-14 16:18:34,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773286274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:34,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:34,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:18:34,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583795511] [2021-12-14 16:18:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:34,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:18:34,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:18:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:18:34,146 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) [2021-12-14 16:18:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:34,495 INFO L93 Difference]: Finished difference Result 6825 states and 8577 transitions. [2021-12-14 16:18:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:18:34,495 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 [2021-12-14 16:18:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:34,510 INFO L225 Difference]: With dead ends: 6825 [2021-12-14 16:18:34,510 INFO L226 Difference]: Without dead ends: 3816 [2021-12-14 16:18:34,517 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:34,520 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 962 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:34,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 1303 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:18:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-12-14 16:18:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3553. [2021-12-14 16:18:34,643 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) [2021-12-14 16:18:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 4491 transitions. [2021-12-14 16:18:34,652 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 4491 transitions. Word has length 72 [2021-12-14 16:18:34,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:34,652 INFO L470 AbstractCegarLoop]: Abstraction has 3553 states and 4491 transitions. [2021-12-14 16:18:34,652 INFO L471 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) [2021-12-14 16:18:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 4491 transitions. [2021-12-14 16:18:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 16:18:34,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:34,654 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:18:34,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 16:18:34,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1130274590, now seen corresponding path program 1 times [2021-12-14 16:18:34,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:34,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646502586] [2021-12-14 16:18:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:34,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:34,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646502586] [2021-12-14 16:18:34,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646502586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:34,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:34,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:34,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785594405] [2021-12-14 16:18:34,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:34,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:34,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:34,723 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) [2021-12-14 16:18:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:35,137 INFO L93 Difference]: Finished difference Result 4617 states and 5769 transitions. [2021-12-14 16:18:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 16:18:35,138 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 [2021-12-14 16:18:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:35,154 INFO L225 Difference]: With dead ends: 4617 [2021-12-14 16:18:35,154 INFO L226 Difference]: Without dead ends: 4614 [2021-12-14 16:18:35,156 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:35,157 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1712 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:35,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1722 Valid, 1034 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:18:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2021-12-14 16:18:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4290. [2021-12-14 16:18:35,303 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) [2021-12-14 16:18:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 5379 transitions. [2021-12-14 16:18:35,312 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 5379 transitions. Word has length 73 [2021-12-14 16:18:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:35,313 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 5379 transitions. [2021-12-14 16:18:35,313 INFO L471 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) [2021-12-14 16:18:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 5379 transitions. [2021-12-14 16:18:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 16:18:35,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:35,314 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:18:35,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 16:18:35,315 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash -679840836, now seen corresponding path program 1 times [2021-12-14 16:18:35,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:35,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947677621] [2021-12-14 16:18:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:35,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:35,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947677621] [2021-12-14 16:18:35,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947677621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:18:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155180117] [2021-12-14 16:18:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:35,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:18:35,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:18:35,407 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) [2021-12-14 16:18:35,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:18:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:35,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 16:18:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:18:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:35,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:18:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:36,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155180117] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:18:36,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 16:18:36,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-14 16:18:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537676021] [2021-12-14 16:18:36,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 16:18:36,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 16:18:36,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 16:18:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:18:36,073 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) [2021-12-14 16:18:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:37,310 INFO L93 Difference]: Finished difference Result 8661 states and 10712 transitions. [2021-12-14 16:18:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-14 16:18:37,311 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 [2021-12-14 16:18:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:37,339 INFO L225 Difference]: With dead ends: 8661 [2021-12-14 16:18:37,340 INFO L226 Difference]: Without dead ends: 8658 [2021-12-14 16:18:37,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-12-14 16:18:37,344 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1774 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:37,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 1966 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 16:18:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2021-12-14 16:18:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 7749. [2021-12-14 16:18:37,655 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) [2021-12-14 16:18:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7749 states to 7749 states and 9631 transitions. [2021-12-14 16:18:37,672 INFO L78 Accepts]: Start accepts. Automaton has 7749 states and 9631 transitions. Word has length 74 [2021-12-14 16:18:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:37,673 INFO L470 AbstractCegarLoop]: Abstraction has 7749 states and 9631 transitions. [2021-12-14 16:18:37,673 INFO L471 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) [2021-12-14 16:18:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7749 states and 9631 transitions. [2021-12-14 16:18:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-14 16:18:37,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:37,675 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:18:37,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:18:37,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 16:18:37,892 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 669680098, now seen corresponding path program 2 times [2021-12-14 16:18:37,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184134559] [2021-12-14 16:18:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:37,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:37,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:37,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184134559] [2021-12-14 16:18:37,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184134559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:37,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:37,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:18:37,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483977673] [2021-12-14 16:18:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:37,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:18:37,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:18:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:18:37,952 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) [2021-12-14 16:18:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:38,330 INFO L93 Difference]: Finished difference Result 10746 states and 13347 transitions. [2021-12-14 16:18:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:18:38,331 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 [2021-12-14 16:18:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:38,343 INFO L225 Difference]: With dead ends: 10746 [2021-12-14 16:18:38,343 INFO L226 Difference]: Without dead ends: 4128 [2021-12-14 16:18:38,352 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:38,353 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1132 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:38,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 1115 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:18:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2021-12-14 16:18:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3094. [2021-12-14 16:18:38,444 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) [2021-12-14 16:18:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3834 transitions. [2021-12-14 16:18:38,451 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3834 transitions. Word has length 77 [2021-12-14 16:18:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:38,451 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 3834 transitions. [2021-12-14 16:18:38,451 INFO L471 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) [2021-12-14 16:18:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3834 transitions. [2021-12-14 16:18:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-14 16:18:38,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:38,453 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:18:38,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 16:18:38,453 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1857100594, now seen corresponding path program 1 times [2021-12-14 16:18:38,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:38,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862367121] [2021-12-14 16:18:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:38,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 16:18:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-14 16:18:38,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:38,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862367121] [2021-12-14 16:18:38,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862367121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:38,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:38,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:18:38,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866207733] [2021-12-14 16:18:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:38,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:18:38,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:18:38,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:18:38,514 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) [2021-12-14 16:18:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:39,330 INFO L93 Difference]: Finished difference Result 8804 states and 10780 transitions. [2021-12-14 16:18:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 16:18:39,330 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 [2021-12-14 16:18:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:39,349 INFO L225 Difference]: With dead ends: 8804 [2021-12-14 16:18:39,349 INFO L226 Difference]: Without dead ends: 5972 [2021-12-14 16:18:39,356 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:39,357 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 914 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:39,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 2097 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:18:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2021-12-14 16:18:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 5663. [2021-12-14 16:18:39,612 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) [2021-12-14 16:18:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 6917 transitions. [2021-12-14 16:18:39,626 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 6917 transitions. Word has length 84 [2021-12-14 16:18:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:39,626 INFO L470 AbstractCegarLoop]: Abstraction has 5663 states and 6917 transitions. [2021-12-14 16:18:39,626 INFO L471 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) [2021-12-14 16:18:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 6917 transitions. [2021-12-14 16:18:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 16:18:39,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:39,629 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:18:39,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 16:18:39,630 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 887628672, now seen corresponding path program 1 times [2021-12-14 16:18:39,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034882076] [2021-12-14 16:18:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:39,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:18:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:18:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:18:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:18:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:18:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 16:18:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 16:18:39,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:39,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034882076] [2021-12-14 16:18:39,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034882076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:39,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:39,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:18:39,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151284676] [2021-12-14 16:18:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:39,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:18:39,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:18:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:18:39,694 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) [2021-12-14 16:18:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:40,658 INFO L93 Difference]: Finished difference Result 8690 states and 10600 transitions. [2021-12-14 16:18:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 16:18:40,658 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 [2021-12-14 16:18:40,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:40,671 INFO L225 Difference]: With dead ends: 8690 [2021-12-14 16:18:40,672 INFO L226 Difference]: Without dead ends: 4152 [2021-12-14 16:18:40,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-14 16:18:40,679 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1553 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:40,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1841 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:18:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2021-12-14 16:18:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 3775. [2021-12-14 16:18:40,790 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) [2021-12-14 16:18:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4539 transitions. [2021-12-14 16:18:40,796 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4539 transitions. Word has length 93 [2021-12-14 16:18:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:40,797 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 4539 transitions. [2021-12-14 16:18:40,797 INFO L471 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) [2021-12-14 16:18:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4539 transitions. [2021-12-14 16:18:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:40,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:40,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:40,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 16:18:40,800 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash 521017431, now seen corresponding path program 1 times [2021-12-14 16:18:40,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:40,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952034797] [2021-12-14 16:18:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:40,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:40,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:40,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952034797] [2021-12-14 16:18:40,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952034797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:40,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:40,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:18:40,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496448661] [2021-12-14 16:18:40,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:40,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:18:40,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:18:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:18:40,876 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) [2021-12-14 16:18:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:41,681 INFO L93 Difference]: Finished difference Result 4105 states and 5065 transitions. [2021-12-14 16:18:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:18:41,681 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 [2021-12-14 16:18:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:41,691 INFO L225 Difference]: With dead ends: 4105 [2021-12-14 16:18:41,691 INFO L226 Difference]: Without dead ends: 3862 [2021-12-14 16:18:41,693 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:41,693 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 754 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:41,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1009 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:18:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-12-14 16:18:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3775. [2021-12-14 16:18:41,854 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) [2021-12-14 16:18:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 4538 transitions. [2021-12-14 16:18:41,861 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 4538 transitions. Word has length 123 [2021-12-14 16:18:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:41,862 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 4538 transitions. [2021-12-14 16:18:41,862 INFO L471 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) [2021-12-14 16:18:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 4538 transitions. [2021-12-14 16:18:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:41,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:41,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:41,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 16:18:41,865 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 49661081, now seen corresponding path program 1 times [2021-12-14 16:18:41,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203209903] [2021-12-14 16:18:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:41,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:41,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203209903] [2021-12-14 16:18:41,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203209903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:41,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:41,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:18:41,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889199708] [2021-12-14 16:18:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:41,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:18:41,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:18:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:18:41,942 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) [2021-12-14 16:18:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:43,374 INFO L93 Difference]: Finished difference Result 4431 states and 5585 transitions. [2021-12-14 16:18:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:18:43,375 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 [2021-12-14 16:18:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:43,385 INFO L225 Difference]: With dead ends: 4431 [2021-12-14 16:18:43,386 INFO L226 Difference]: Without dead ends: 4194 [2021-12-14 16:18:43,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:18:43,388 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1194 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1410 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 16:18:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-12-14 16:18:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4021. [2021-12-14 16:18:43,639 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) [2021-12-14 16:18:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4924 transitions. [2021-12-14 16:18:43,647 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4924 transitions. Word has length 123 [2021-12-14 16:18:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:43,648 INFO L470 AbstractCegarLoop]: Abstraction has 4021 states and 4924 transitions. [2021-12-14 16:18:43,648 INFO L471 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) [2021-12-14 16:18:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4924 transitions. [2021-12-14 16:18:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:43,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:43,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:43,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 16:18:43,651 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -675902947, now seen corresponding path program 1 times [2021-12-14 16:18:43,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:43,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246851564] [2021-12-14 16:18:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:43,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:43,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:43,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246851564] [2021-12-14 16:18:43,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246851564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:43,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:43,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:43,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626396222] [2021-12-14 16:18:43,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:43,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:43,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:43,750 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) [2021-12-14 16:18:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:45,681 INFO L93 Difference]: Finished difference Result 5019 states and 6514 transitions. [2021-12-14 16:18:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:45,681 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 [2021-12-14 16:18:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:45,690 INFO L225 Difference]: With dead ends: 5019 [2021-12-14 16:18:45,690 INFO L226 Difference]: Without dead ends: 4536 [2021-12-14 16:18:45,692 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:45,692 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1203 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:45,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2262 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 16:18:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2021-12-14 16:18:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4250. [2021-12-14 16:18:45,861 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) [2021-12-14 16:18:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 5275 transitions. [2021-12-14 16:18:45,868 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 5275 transitions. Word has length 123 [2021-12-14 16:18:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:45,868 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 5275 transitions. [2021-12-14 16:18:45,868 INFO L471 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) [2021-12-14 16:18:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 5275 transitions. [2021-12-14 16:18:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:45,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:45,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:45,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 16:18:45,872 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash 713391067, now seen corresponding path program 1 times [2021-12-14 16:18:45,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:45,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319730401] [2021-12-14 16:18:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:45,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:45,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:45,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319730401] [2021-12-14 16:18:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319730401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:45,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:45,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:45,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467146933] [2021-12-14 16:18:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:45,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:45,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:45,950 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) [2021-12-14 16:18:47,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:47,803 INFO L93 Difference]: Finished difference Result 5885 states and 7873 transitions. [2021-12-14 16:18:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:47,804 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 [2021-12-14 16:18:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:47,817 INFO L225 Difference]: With dead ends: 5885 [2021-12-14 16:18:47,817 INFO L226 Difference]: Without dead ends: 5173 [2021-12-14 16:18:47,822 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:47,822 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1200 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:47,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2250 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 16:18:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2021-12-14 16:18:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4709. [2021-12-14 16:18:48,035 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) [2021-12-14 16:18:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 5982 transitions. [2021-12-14 16:18:48,044 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 5982 transitions. Word has length 123 [2021-12-14 16:18:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:48,045 INFO L470 AbstractCegarLoop]: Abstraction has 4709 states and 5982 transitions. [2021-12-14 16:18:48,045 INFO L471 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) [2021-12-14 16:18:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 5982 transitions. [2021-12-14 16:18:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:48,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:48,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:48,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 16:18:48,049 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1320002979, now seen corresponding path program 1 times [2021-12-14 16:18:48,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:48,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643930115] [2021-12-14 16:18:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:48,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:48,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:48,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643930115] [2021-12-14 16:18:48,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643930115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:48,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:48,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:48,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393842393] [2021-12-14 16:18:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:48,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:48,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:48,123 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) [2021-12-14 16:18:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:49,922 INFO L93 Difference]: Finished difference Result 7552 states and 10476 transitions. [2021-12-14 16:18:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:49,923 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 [2021-12-14 16:18:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:49,943 INFO L225 Difference]: With dead ends: 7552 [2021-12-14 16:18:49,944 INFO L226 Difference]: Without dead ends: 6381 [2021-12-14 16:18:49,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:18:49,951 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1199 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:49,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2244 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:18:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2021-12-14 16:18:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5628. [2021-12-14 16:18:50,296 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) [2021-12-14 16:18:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 7402 transitions. [2021-12-14 16:18:50,306 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 7402 transitions. Word has length 123 [2021-12-14 16:18:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:50,307 INFO L470 AbstractCegarLoop]: Abstraction has 5628 states and 7402 transitions. [2021-12-14 16:18:50,307 INFO L471 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) [2021-12-14 16:18:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 7402 transitions. [2021-12-14 16:18:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:50,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:50,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:50,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 16:18:50,312 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1108255643, now seen corresponding path program 1 times [2021-12-14 16:18:50,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:50,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639051696] [2021-12-14 16:18:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:50,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:50,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:50,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639051696] [2021-12-14 16:18:50,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639051696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:50,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:50,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:50,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815190008] [2021-12-14 16:18:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:50,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:50,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:50,399 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) [2021-12-14 16:18:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:52,312 INFO L93 Difference]: Finished difference Result 10878 states and 15686 transitions. [2021-12-14 16:18:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:52,313 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 [2021-12-14 16:18:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:52,335 INFO L225 Difference]: With dead ends: 10878 [2021-12-14 16:18:52,335 INFO L226 Difference]: Without dead ends: 8788 [2021-12-14 16:18:52,342 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:52,343 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1194 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:52,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 2236 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:18:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8788 states. [2021-12-14 16:18:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8788 to 7480. [2021-12-14 16:18:52,749 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) [2021-12-14 16:18:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 10284 transitions. [2021-12-14 16:18:52,765 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 10284 transitions. Word has length 123 [2021-12-14 16:18:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:52,765 INFO L470 AbstractCegarLoop]: Abstraction has 7480 states and 10284 transitions. [2021-12-14 16:18:52,765 INFO L471 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) [2021-12-14 16:18:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 10284 transitions. [2021-12-14 16:18:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:52,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:52,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:52,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 16:18:52,771 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1289214887, now seen corresponding path program 1 times [2021-12-14 16:18:52,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092555600] [2021-12-14 16:18:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:52,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:52,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092555600] [2021-12-14 16:18:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092555600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:52,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:52,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:52,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915991811] [2021-12-14 16:18:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:52,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:52,862 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) [2021-12-14 16:18:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:54,072 INFO L93 Difference]: Finished difference Result 12778 states and 18729 transitions. [2021-12-14 16:18:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:18:54,073 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 [2021-12-14 16:18:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:54,096 INFO L225 Difference]: With dead ends: 12778 [2021-12-14 16:18:54,096 INFO L226 Difference]: Without dead ends: 8836 [2021-12-14 16:18:54,137 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:18:54,139 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 928 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:54,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 1336 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 16:18:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2021-12-14 16:18:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 7480. [2021-12-14 16:18:54,447 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) [2021-12-14 16:18:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 10267 transitions. [2021-12-14 16:18:54,461 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 10267 transitions. Word has length 123 [2021-12-14 16:18:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:54,462 INFO L470 AbstractCegarLoop]: Abstraction has 7480 states and 10267 transitions. [2021-12-14 16:18:54,462 INFO L471 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) [2021-12-14 16:18:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 10267 transitions. [2021-12-14 16:18:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:54,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:54,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:54,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 16:18:54,467 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -258173989, now seen corresponding path program 1 times [2021-12-14 16:18:54,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929161834] [2021-12-14 16:18:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:54,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:54,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:54,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929161834] [2021-12-14 16:18:54,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929161834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:54,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:54,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:54,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413552349] [2021-12-14 16:18:54,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:54,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:54,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:54,549 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) [2021-12-14 16:18:56,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:18:56,618 INFO L93 Difference]: Finished difference Result 17530 states and 26078 transitions. [2021-12-14 16:18:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:18:56,621 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 [2021-12-14 16:18:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:18:56,655 INFO L225 Difference]: With dead ends: 17530 [2021-12-14 16:18:56,655 INFO L226 Difference]: Without dead ends: 13588 [2021-12-14 16:18:56,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:18:56,670 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1186 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:18:56,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 2225 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:18:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2021-12-14 16:18:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 11214. [2021-12-14 16:18:57,182 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) [2021-12-14 16:18:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11214 states to 11214 states and 16105 transitions. [2021-12-14 16:18:57,206 INFO L78 Accepts]: Start accepts. Automaton has 11214 states and 16105 transitions. Word has length 123 [2021-12-14 16:18:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:18:57,207 INFO L470 AbstractCegarLoop]: Abstraction has 11214 states and 16105 transitions. [2021-12-14 16:18:57,207 INFO L471 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) [2021-12-14 16:18:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11214 states and 16105 transitions. [2021-12-14 16:18:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:18:57,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:18:57,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:18:57,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 16:18:57,214 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:18:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:18:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2130390041, now seen corresponding path program 1 times [2021-12-14 16:18:57,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:18:57,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413698249] [2021-12-14 16:18:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:18:57,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:18:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:18:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:18:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:18:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:18:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:18:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:18:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:18:57,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:18:57,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413698249] [2021-12-14 16:18:57,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413698249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:18:57,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:18:57,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:18:57,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475950171] [2021-12-14 16:18:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:18:57,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:18:57,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:18:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:18:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:18:57,278 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) [2021-12-14 16:19:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:19:00,271 INFO L93 Difference]: Finished difference Result 34294 states and 52384 transitions. [2021-12-14 16:19:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:19:00,272 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 [2021-12-14 16:19:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:19:00,340 INFO L225 Difference]: With dead ends: 34294 [2021-12-14 16:19:00,341 INFO L226 Difference]: Without dead ends: 26618 [2021-12-14 16:19:00,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:19:00,361 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 1258 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 16:19:00,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 2330 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 16:19:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26618 states. [2021-12-14 16:19:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26618 to 18615. [2021-12-14 16:19:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18615 states, 16325 states have (on average 1.4755283307810108) internal successors, (24088), 16471 states have internal predecessors, (24088), 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) [2021-12-14 16:19:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18615 states to 18615 states and 27857 transitions. [2021-12-14 16:19:01,408 INFO L78 Accepts]: Start accepts. Automaton has 18615 states and 27857 transitions. Word has length 123 [2021-12-14 16:19:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:19:01,408 INFO L470 AbstractCegarLoop]: Abstraction has 18615 states and 27857 transitions. [2021-12-14 16:19:01,408 INFO L471 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) [2021-12-14 16:19:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18615 states and 27857 transitions. [2021-12-14 16:19:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:19:01,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:19:01,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:19:01,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 16:19:01,423 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:19:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:19:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash -563506149, now seen corresponding path program 1 times [2021-12-14 16:19:01,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:19:01,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358286423] [2021-12-14 16:19:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:19:01,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:19:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:19:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:19:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:19:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:19:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:19:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:19:01,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:19:01,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358286423] [2021-12-14 16:19:01,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358286423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:19:01,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:19:01,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:19:01,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870772878] [2021-12-14 16:19:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:19:01,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:19:01,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:19:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:19:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:19:01,502 INFO L87 Difference]: Start difference. First operand 18615 states and 27857 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) [2021-12-14 16:19:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:19:03,273 INFO L93 Difference]: Finished difference Result 38370 states and 59822 transitions. [2021-12-14 16:19:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:19:03,273 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 [2021-12-14 16:19:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:19:03,378 INFO L225 Difference]: With dead ends: 38370 [2021-12-14 16:19:03,378 INFO L226 Difference]: Without dead ends: 23293 [2021-12-14 16:19:03,414 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:19:03,415 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 1083 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:19:03,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 1142 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:19:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23293 states. [2021-12-14 16:19:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23293 to 18615. [2021-12-14 16:19:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18615 states, 16325 states have (on average 1.4715467075038284) internal successors, (24023), 16471 states have internal predecessors, (24023), 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) [2021-12-14 16:19:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18615 states to 18615 states and 27792 transitions. [2021-12-14 16:19:04,691 INFO L78 Accepts]: Start accepts. Automaton has 18615 states and 27792 transitions. Word has length 123 [2021-12-14 16:19:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:19:04,692 INFO L470 AbstractCegarLoop]: Abstraction has 18615 states and 27792 transitions. [2021-12-14 16:19:04,692 INFO L471 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) [2021-12-14 16:19:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 18615 states and 27792 transitions. [2021-12-14 16:19:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:19:04,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:19:04,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:19:04,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 16:19:04,703 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:19:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:19:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1620237351, now seen corresponding path program 1 times [2021-12-14 16:19:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:19:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421817251] [2021-12-14 16:19:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:19:04,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:19:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:19:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:19:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:19:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:19:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:19:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:19:04,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:19:04,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421817251] [2021-12-14 16:19:04,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421817251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:19:04,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:19:04,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:19:04,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011223911] [2021-12-14 16:19:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:19:04,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:19:04,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:19:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:19:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:19:04,773 INFO L87 Difference]: Start difference. First operand 18615 states and 27792 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) [2021-12-14 16:19:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:19:06,642 INFO L93 Difference]: Finished difference Result 38304 states and 59495 transitions. [2021-12-14 16:19:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:19:06,643 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 [2021-12-14 16:19:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:19:06,687 INFO L225 Difference]: With dead ends: 38304 [2021-12-14 16:19:06,687 INFO L226 Difference]: Without dead ends: 23227 [2021-12-14 16:19:06,708 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:19:06,709 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 1081 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:19:06,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1138 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:19:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23227 states. [2021-12-14 16:19:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23227 to 18615. [2021-12-14 16:19:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18615 states, 16325 states have (on average 1.4675650842266463) internal successors, (23958), 16471 states have internal predecessors, (23958), 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) [2021-12-14 16:19:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18615 states to 18615 states and 27727 transitions. [2021-12-14 16:19:07,858 INFO L78 Accepts]: Start accepts. Automaton has 18615 states and 27727 transitions. Word has length 123 [2021-12-14 16:19:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:19:07,858 INFO L470 AbstractCegarLoop]: Abstraction has 18615 states and 27727 transitions. [2021-12-14 16:19:07,858 INFO L471 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) [2021-12-14 16:19:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18615 states and 27727 transitions. [2021-12-14 16:19:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:19:07,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:19:07,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:19:07,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 16:19:07,868 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:19:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:19:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash -268852133, now seen corresponding path program 1 times [2021-12-14 16:19:07,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:19:07,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676880068] [2021-12-14 16:19:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:19:07,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:19:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:19:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:19:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:19:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:19:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:19:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:19:07,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:19:07,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676880068] [2021-12-14 16:19:07,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676880068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:19:07,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:19:07,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:19:07,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188640977] [2021-12-14 16:19:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:19:07,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:19:07,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:19:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:19:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:19:07,932 INFO L87 Difference]: Start difference. First operand 18615 states and 27727 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) [2021-12-14 16:19:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:19:12,202 INFO L93 Difference]: Finished difference Result 61481 states and 95398 transitions. [2021-12-14 16:19:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:19:12,210 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 [2021-12-14 16:19:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:19:12,368 INFO L225 Difference]: With dead ends: 61481 [2021-12-14 16:19:12,368 INFO L226 Difference]: Without dead ends: 46404 [2021-12-14 16:19:12,394 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:19:12,395 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1347 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:19:12,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 2191 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:19:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46404 states. [2021-12-14 16:19:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46404 to 33514. [2021-12-14 16:19:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33514 states, 29848 states have (on average 1.4922272849102118) internal successors, (44540), 30058 states have internal predecessors, (44540), 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) [2021-12-14 16:19:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33514 states to 33514 states and 51687 transitions. [2021-12-14 16:19:14,140 INFO L78 Accepts]: Start accepts. Automaton has 33514 states and 51687 transitions. Word has length 123 [2021-12-14 16:19:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:19:14,140 INFO L470 AbstractCegarLoop]: Abstraction has 33514 states and 51687 transitions. [2021-12-14 16:19:14,140 INFO L471 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) [2021-12-14 16:19:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 33514 states and 51687 transitions. [2021-12-14 16:19:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 16:19:14,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:19:14,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:19:14,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 16:19:14,157 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:19:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:19:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1887827047, now seen corresponding path program 1 times [2021-12-14 16:19:14,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:19:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508752161] [2021-12-14 16:19:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:19:14,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:19:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:19:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:19:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 16:19:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 16:19:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 16:19:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:19:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:19:14,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:19:14,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508752161] [2021-12-14 16:19:14,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508752161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:19:14,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:19:14,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:19:14,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112752941] [2021-12-14 16:19:14,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:19:14,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:19:14,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:19:14,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:19:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:19:14,253 INFO L87 Difference]: Start difference. First operand 33514 states and 51687 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) [2021-12-14 16:19:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:19:20,811 INFO L93 Difference]: Finished difference Result 114616 states and 182028 transitions. [2021-12-14 16:19:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:19:20,811 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 [2021-12-14 16:19:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:19:21,032 INFO L225 Difference]: With dead ends: 114616 [2021-12-14 16:19:21,032 INFO L226 Difference]: Without dead ends: 84640 [2021-12-14 16:19:21,097 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:19:21,098 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1191 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:19:21,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 2226 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:19:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84640 states.