./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.02.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 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:30:33,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:30:33,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:30:33,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:30:33,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:30:33,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:30:33,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:30:33,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:30:33,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:30:33,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:30:33,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:30:33,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:30:33,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:30:33,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:30:33,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:30:33,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:30:33,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:30:33,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:30:33,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:30:33,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:30:33,619 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:30:33,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:30:33,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:30:33,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:30:33,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:30:33,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:30:33,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:30:33,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:30:33,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:30:33,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:30:33,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:30:33,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:30:33,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:30:33,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:30:33,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:30:33,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:30:33,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:30:33,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:30:33,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:30:33,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:30:33,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:30:33,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:30:33,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:30:33,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:30:33,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:30:33,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:30:33,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:30:33,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:30:33,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:30:33,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:30:33,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:30:33,669 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:30:33,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:30:33,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:30:33,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:30:33,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:30:33,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:30:33,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:30:33,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:30:33,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:30:33,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:30:33,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:30:33,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:30:33,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:30:33,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:30:33,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:30:33,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:30:33,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:30:33,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:30:33,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:30:33,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:30:33,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:30:33,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:30:33,673 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:30:33,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:30:33,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:30:33,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 [2022-07-12 09:30:33,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:30:33,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:30:33,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:30:33,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:30:33,909 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:30:33,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-12 09:30:33,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017caf078/3202ea2bbb0044aa9894e6e10e425a71/FLAG82096a90e [2022-07-12 09:30:34,403 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:30:34,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-12 09:30:34,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017caf078/3202ea2bbb0044aa9894e6e10e425a71/FLAG82096a90e [2022-07-12 09:30:34,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017caf078/3202ea2bbb0044aa9894e6e10e425a71 [2022-07-12 09:30:34,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:30:34,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:30:34,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:30:34,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:30:34,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:30:34,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:30:34" (1/1) ... [2022-07-12 09:30:34,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678cd8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:34, skipping insertion in model container [2022-07-12 09:30:34,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:30:34" (1/1) ... [2022-07-12 09:30:34,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:30:34,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:30:34,980 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.02.cil-1.c[914,927] [2022-07-12 09:30:35,015 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.02.cil-1.c[7115,7128] [2022-07-12 09:30:35,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:30:35,050 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:30:35,059 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.02.cil-1.c[914,927] [2022-07-12 09:30:35,076 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.02.cil-1.c[7115,7128] [2022-07-12 09:30:35,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:30:35,110 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:30:35,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35 WrapperNode [2022-07-12 09:30:35,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:30:35,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:30:35,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:30:35,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:30:35,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,154 INFO L137 Inliner]: procedures = 57, calls = 63, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 460 [2022-07-12 09:30:35,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:30:35,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:30:35,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:30:35,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:30:35,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:30:35,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:30:35,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:30:35,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:30:35,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (1/1) ... [2022-07-12 09:30:35,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:30:35,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:30:35,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:30:35,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:30:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:30:35,264 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:30:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:30:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:30:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:30:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:30:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:30:35,265 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:30:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:30:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:30:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:30:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:30:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:30:35,266 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:30:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:30:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:30:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:30:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:30:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:30:35,267 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:30:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:30:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:30:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:30:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:30:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:30:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:30:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:30:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:30:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:30:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:30:35,368 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:30:35,370 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:30:35,861 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:30:35,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:30:35,869 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-12 09:30:35,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:30:35 BoogieIcfgContainer [2022-07-12 09:30:35,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:30:35,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:30:35,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:30:35,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:30:35,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:30:34" (1/3) ... [2022-07-12 09:30:35,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5502f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:30:35, skipping insertion in model container [2022-07-12 09:30:35,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:30:35" (2/3) ... [2022-07-12 09:30:35,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5502f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:30:35, skipping insertion in model container [2022-07-12 09:30:35,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:30:35" (3/3) ... [2022-07-12 09:30:35,889 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-12 09:30:35,901 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:30:35,902 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:30:35,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:30:35,954 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44e23658, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34ed0a3 [2022-07-12 09:30:35,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:30:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 186 states have (on average 1.553763440860215) internal successors, (289), 192 states have internal predecessors, (289), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-07-12 09:30:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:35,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:35,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:35,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1449552793, now seen corresponding path program 1 times [2022-07-12 09:30:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:35,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111682977] [2022-07-12 09:30:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:35,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:36,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111682977] [2022-07-12 09:30:36,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111682977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:36,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:36,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:30:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052243668] [2022-07-12 09:30:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:30:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:30:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:30:36,347 INFO L87 Difference]: Start difference. First operand has 233 states, 186 states have (on average 1.553763440860215) internal successors, (289), 192 states have internal predecessors, (289), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:36,856 INFO L93 Difference]: Finished difference Result 467 states and 699 transitions. [2022-07-12 09:30:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:30:36,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:30:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:36,869 INFO L225 Difference]: With dead ends: 467 [2022-07-12 09:30:36,869 INFO L226 Difference]: Without dead ends: 241 [2022-07-12 09:30:36,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:36,875 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 458 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:36,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 707 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:30:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-12 09:30:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 223. [2022-07-12 09:30:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.449438202247191) internal successors, (258), 182 states have internal predecessors, (258), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-12 09:30:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 316 transitions. [2022-07-12 09:30:36,926 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 316 transitions. Word has length 65 [2022-07-12 09:30:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:36,927 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 316 transitions. [2022-07-12 09:30:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 316 transitions. [2022-07-12 09:30:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:36,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:36,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:30:36,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1408878043, now seen corresponding path program 1 times [2022-07-12 09:30:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:36,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869010915] [2022-07-12 09:30:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:37,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869010915] [2022-07-12 09:30:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869010915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:37,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:30:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519459306] [2022-07-12 09:30:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:37,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:30:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:30:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:30:37,059 INFO L87 Difference]: Start difference. First operand 223 states and 316 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:37,666 INFO L93 Difference]: Finished difference Result 446 states and 630 transitions. [2022-07-12 09:30:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:30:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:37,670 INFO L225 Difference]: With dead ends: 446 [2022-07-12 09:30:37,670 INFO L226 Difference]: Without dead ends: 358 [2022-07-12 09:30:37,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:30:37,673 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 754 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:37,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 886 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:30:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-12 09:30:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 319. [2022-07-12 09:30:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 254 states have (on average 1.4251968503937007) internal successors, (362), 260 states have internal predecessors, (362), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2022-07-12 09:30:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 447 transitions. [2022-07-12 09:30:37,706 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 447 transitions. Word has length 65 [2022-07-12 09:30:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:37,707 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 447 transitions. [2022-07-12 09:30:37,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 447 transitions. [2022-07-12 09:30:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:37,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:37,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:37,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:30:37,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1812663994, now seen corresponding path program 1 times [2022-07-12 09:30:37,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:37,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124825789] [2022-07-12 09:30:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:37,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124825789] [2022-07-12 09:30:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124825789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:37,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:30:37,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387428555] [2022-07-12 09:30:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:30:37,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:37,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:30:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:30:37,853 INFO L87 Difference]: Start difference. First operand 319 states and 447 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:38,504 INFO L93 Difference]: Finished difference Result 533 states and 741 transitions. [2022-07-12 09:30:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:30:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:30:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:38,508 INFO L225 Difference]: With dead ends: 533 [2022-07-12 09:30:38,508 INFO L226 Difference]: Without dead ends: 356 [2022-07-12 09:30:38,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:38,510 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 368 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:38,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1232 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:30:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-12 09:30:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 324. [2022-07-12 09:30:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 258 states have (on average 1.4147286821705427) internal successors, (365), 264 states have internal predecessors, (365), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2022-07-12 09:30:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 451 transitions. [2022-07-12 09:30:38,548 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 451 transitions. Word has length 65 [2022-07-12 09:30:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:38,548 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 451 transitions. [2022-07-12 09:30:38,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 451 transitions. [2022-07-12 09:30:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:38,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:38,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:38,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:30:38,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:38,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash 783304696, now seen corresponding path program 1 times [2022-07-12 09:30:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:38,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510859343] [2022-07-12 09:30:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:38,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510859343] [2022-07-12 09:30:38,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510859343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:38,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:38,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:30:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563997443] [2022-07-12 09:30:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:30:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:30:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:30:38,696 INFO L87 Difference]: Start difference. First operand 324 states and 451 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:30:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:40,151 INFO L93 Difference]: Finished difference Result 1224 states and 1669 transitions. [2022-07-12 09:30:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:30:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:30:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:40,159 INFO L225 Difference]: With dead ends: 1224 [2022-07-12 09:30:40,159 INFO L226 Difference]: Without dead ends: 1030 [2022-07-12 09:30:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:30:40,165 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2068 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1438 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:30:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-12 09:30:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 905. [2022-07-12 09:30:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 720 states have (on average 1.3611111111111112) internal successors, (980), 734 states have internal predecessors, (980), 98 states have call successors, (98), 74 states have call predecessors, (98), 85 states have return successors, (114), 98 states have call predecessors, (114), 96 states have call successors, (114) [2022-07-12 09:30:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1192 transitions. [2022-07-12 09:30:40,226 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1192 transitions. Word has length 65 [2022-07-12 09:30:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:40,226 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1192 transitions. [2022-07-12 09:30:40,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:30:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1192 transitions. [2022-07-12 09:30:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:40,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:40,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:30:40,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1834753785, now seen corresponding path program 1 times [2022-07-12 09:30:40,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:40,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236097110] [2022-07-12 09:30:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:40,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236097110] [2022-07-12 09:30:40,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236097110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:40,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:40,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:30:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148275675] [2022-07-12 09:30:40,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:30:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:30:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:30:40,401 INFO L87 Difference]: Start difference. First operand 905 states and 1192 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:40,989 INFO L93 Difference]: Finished difference Result 1786 states and 2335 transitions. [2022-07-12 09:30:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:30:40,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:30:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:40,995 INFO L225 Difference]: With dead ends: 1786 [2022-07-12 09:30:40,995 INFO L226 Difference]: Without dead ends: 1017 [2022-07-12 09:30:40,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:30:40,998 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 369 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:40,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1228 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:30:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-07-12 09:30:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 925. [2022-07-12 09:30:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 736 states have (on average 1.346467391304348) internal successors, (991), 750 states have internal predecessors, (991), 98 states have call successors, (98), 74 states have call predecessors, (98), 89 states have return successors, (118), 102 states have call predecessors, (118), 96 states have call successors, (118) [2022-07-12 09:30:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1207 transitions. [2022-07-12 09:30:41,048 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1207 transitions. Word has length 65 [2022-07-12 09:30:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:41,048 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1207 transitions. [2022-07-12 09:30:41,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1207 transitions. [2022-07-12 09:30:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:41,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:41,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:30:41,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:41,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:41,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1074010117, now seen corresponding path program 1 times [2022-07-12 09:30:41,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:41,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194448645] [2022-07-12 09:30:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:41,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194448645] [2022-07-12 09:30:41,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194448645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:41,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:41,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:30:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170359285] [2022-07-12 09:30:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:30:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:30:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:30:41,170 INFO L87 Difference]: Start difference. First operand 925 states and 1207 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:41,909 INFO L93 Difference]: Finished difference Result 2493 states and 3154 transitions. [2022-07-12 09:30:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:30:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:30:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:41,917 INFO L225 Difference]: With dead ends: 2493 [2022-07-12 09:30:41,917 INFO L226 Difference]: Without dead ends: 1705 [2022-07-12 09:30:41,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:30:41,920 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 636 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:41,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1088 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:30:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-12 09:30:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1373. [2022-07-12 09:30:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1089 states have (on average 1.322314049586777) internal successors, (1440), 1112 states have internal predecessors, (1440), 144 states have call successors, (144), 113 states have call predecessors, (144), 138 states have return successors, (190), 150 states have call predecessors, (190), 142 states have call successors, (190) [2022-07-12 09:30:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1774 transitions. [2022-07-12 09:30:41,990 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1774 transitions. Word has length 65 [2022-07-12 09:30:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:41,991 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1774 transitions. [2022-07-12 09:30:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1774 transitions. [2022-07-12 09:30:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:30:41,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:41,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:30:41,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1208023623, now seen corresponding path program 1 times [2022-07-12 09:30:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:41,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460934510] [2022-07-12 09:30:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:42,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460934510] [2022-07-12 09:30:42,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460934510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:42,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:42,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119405582] [2022-07-12 09:30:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:42,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:42,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:42,071 INFO L87 Difference]: Start difference. First operand 1373 states and 1774 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:42,480 INFO L93 Difference]: Finished difference Result 3844 states and 4913 transitions. [2022-07-12 09:30:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:30:42,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:30:42,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:42,493 INFO L225 Difference]: With dead ends: 3844 [2022-07-12 09:30:42,493 INFO L226 Difference]: Without dead ends: 2610 [2022-07-12 09:30:42,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:30:42,498 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 757 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:42,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 748 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:30:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-07-12 09:30:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2502. [2022-07-12 09:30:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1958 states have (on average 1.2727272727272727) internal successors, (2492), 2002 states have internal predecessors, (2492), 268 states have call successors, (268), 219 states have call predecessors, (268), 274 states have return successors, (398), 283 states have call predecessors, (398), 266 states have call successors, (398) [2022-07-12 09:30:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3158 transitions. [2022-07-12 09:30:42,650 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3158 transitions. Word has length 65 [2022-07-12 09:30:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:42,650 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3158 transitions. [2022-07-12 09:30:42,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:30:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3158 transitions. [2022-07-12 09:30:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:30:42,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:42,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:30:42,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1889239193, now seen corresponding path program 1 times [2022-07-12 09:30:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661685151] [2022-07-12 09:30:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661685151] [2022-07-12 09:30:42,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661685151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:42,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:42,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:30:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812684232] [2022-07-12 09:30:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:30:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:30:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:30:42,711 INFO L87 Difference]: Start difference. First operand 2502 states and 3158 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:43,225 INFO L93 Difference]: Finished difference Result 5824 states and 7332 transitions. [2022-07-12 09:30:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:30:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:30:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:43,241 INFO L225 Difference]: With dead ends: 5824 [2022-07-12 09:30:43,241 INFO L226 Difference]: Without dead ends: 3461 [2022-07-12 09:30:43,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:43,248 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 419 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:43,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 854 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:30:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-07-12 09:30:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3207. [2022-07-12 09:30:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2506 states have (on average 1.2637669592976855) internal successors, (3167), 2556 states have internal predecessors, (3167), 344 states have call successors, (344), 285 states have call predecessors, (344), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2022-07-12 09:30:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4005 transitions. [2022-07-12 09:30:43,413 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4005 transitions. Word has length 66 [2022-07-12 09:30:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:43,414 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 4005 transitions. [2022-07-12 09:30:43,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4005 transitions. [2022-07-12 09:30:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:43,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:43,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:30:43,416 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:43,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1540602375, now seen corresponding path program 1 times [2022-07-12 09:30:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:43,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36489494] [2022-07-12 09:30:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:43,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:43,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36489494] [2022-07-12 09:30:43,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36489494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:43,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:43,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:30:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432780645] [2022-07-12 09:30:43,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:30:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:30:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:30:43,470 INFO L87 Difference]: Start difference. First operand 3207 states and 4005 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:43,962 INFO L93 Difference]: Finished difference Result 3360 states and 4237 transitions. [2022-07-12 09:30:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:43,974 INFO L225 Difference]: With dead ends: 3360 [2022-07-12 09:30:43,974 INFO L226 Difference]: Without dead ends: 3239 [2022-07-12 09:30:43,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:30:43,976 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 382 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:43,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 628 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:30:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-07-12 09:30:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 3207. [2022-07-12 09:30:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2506 states have (on average 1.2633679169992018) internal successors, (3166), 2556 states have internal predecessors, (3166), 344 states have call successors, (344), 285 states have call predecessors, (344), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2022-07-12 09:30:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4004 transitions. [2022-07-12 09:30:44,123 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4004 transitions. Word has length 68 [2022-07-12 09:30:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:44,123 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 4004 transitions. [2022-07-12 09:30:44,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4004 transitions. [2022-07-12 09:30:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:44,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:44,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:30:44,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1338778441, now seen corresponding path program 1 times [2022-07-12 09:30:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670960153] [2022-07-12 09:30:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:44,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:44,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670960153] [2022-07-12 09:30:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670960153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:44,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:44,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:30:44,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335407951] [2022-07-12 09:30:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:44,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:30:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:30:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:30:44,212 INFO L87 Difference]: Start difference. First operand 3207 states and 4004 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:44,979 INFO L93 Difference]: Finished difference Result 3503 states and 4451 transitions. [2022-07-12 09:30:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:30:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:44,994 INFO L225 Difference]: With dead ends: 3503 [2022-07-12 09:30:44,994 INFO L226 Difference]: Without dead ends: 3386 [2022-07-12 09:30:44,996 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:30:44,997 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 621 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:44,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 803 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:30:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-07-12 09:30:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3323. [2022-07-12 09:30:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 2604 states have (on average 1.271889400921659) internal successors, (3312), 2655 states have internal predecessors, (3312), 355 states have call successors, (355), 291 states have call predecessors, (355), 362 states have return successors, (508), 379 states have call predecessors, (508), 353 states have call successors, (508) [2022-07-12 09:30:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 4175 transitions. [2022-07-12 09:30:45,177 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 4175 transitions. Word has length 68 [2022-07-12 09:30:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 3323 states and 4175 transitions. [2022-07-12 09:30:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 4175 transitions. [2022-07-12 09:30:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:45,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:30:45,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1428854835, now seen corresponding path program 1 times [2022-07-12 09:30:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:45,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530160152] [2022-07-12 09:30:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:45,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:45,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530160152] [2022-07-12 09:30:45,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530160152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:45,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:45,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587836293] [2022-07-12 09:30:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:45,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:45,250 INFO L87 Difference]: Start difference. First operand 3323 states and 4175 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:46,168 INFO L93 Difference]: Finished difference Result 3766 states and 4835 transitions. [2022-07-12 09:30:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:46,183 INFO L225 Difference]: With dead ends: 3766 [2022-07-12 09:30:46,183 INFO L226 Difference]: Without dead ends: 3533 [2022-07-12 09:30:46,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:46,186 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 616 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:46,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1212 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:30:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2022-07-12 09:30:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3432. [2022-07-12 09:30:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 2695 states have (on average 1.277922077922078) internal successors, (3444), 2747 states have internal predecessors, (3444), 366 states have call successors, (366), 297 states have call predecessors, (366), 369 states have return successors, (521), 391 states have call predecessors, (521), 364 states have call successors, (521) [2022-07-12 09:30:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4331 transitions. [2022-07-12 09:30:46,370 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4331 transitions. Word has length 68 [2022-07-12 09:30:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:46,370 INFO L495 AbstractCegarLoop]: Abstraction has 3432 states and 4331 transitions. [2022-07-12 09:30:46,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4331 transitions. [2022-07-12 09:30:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:46,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:46,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:30:46,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -552835829, now seen corresponding path program 1 times [2022-07-12 09:30:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:46,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604740559] [2022-07-12 09:30:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:46,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:46,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604740559] [2022-07-12 09:30:46,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604740559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:46,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:46,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516939507] [2022-07-12 09:30:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:46,452 INFO L87 Difference]: Start difference. First operand 3432 states and 4331 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:47,012 INFO L93 Difference]: Finished difference Result 3873 states and 4993 transitions. [2022-07-12 09:30:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:47,025 INFO L225 Difference]: With dead ends: 3873 [2022-07-12 09:30:47,026 INFO L226 Difference]: Without dead ends: 3531 [2022-07-12 09:30:47,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:47,029 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 612 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:47,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 670 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:30:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2022-07-12 09:30:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3432. [2022-07-12 09:30:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 2695 states have (on average 1.276808905380334) internal successors, (3441), 2747 states have internal predecessors, (3441), 366 states have call successors, (366), 297 states have call predecessors, (366), 369 states have return successors, (521), 391 states have call predecessors, (521), 364 states have call successors, (521) [2022-07-12 09:30:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4328 transitions. [2022-07-12 09:30:47,210 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4328 transitions. Word has length 68 [2022-07-12 09:30:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:47,212 INFO L495 AbstractCegarLoop]: Abstraction has 3432 states and 4328 transitions. [2022-07-12 09:30:47,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4328 transitions. [2022-07-12 09:30:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:47,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:47,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:30:47,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 985504201, now seen corresponding path program 1 times [2022-07-12 09:30:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:47,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223899269] [2022-07-12 09:30:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:47,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223899269] [2022-07-12 09:30:47,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223899269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:47,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:47,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736826421] [2022-07-12 09:30:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:47,304 INFO L87 Difference]: Start difference. First operand 3432 states and 4328 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:48,282 INFO L93 Difference]: Finished difference Result 4197 states and 5449 transitions. [2022-07-12 09:30:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:48,310 INFO L225 Difference]: With dead ends: 4197 [2022-07-12 09:30:48,310 INFO L226 Difference]: Without dead ends: 3855 [2022-07-12 09:30:48,314 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:30:48,315 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 658 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:48,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1182 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:30:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-07-12 09:30:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3641. [2022-07-12 09:30:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 2870 states have (on average 1.2871080139372821) internal successors, (3694), 2924 states have internal predecessors, (3694), 386 states have call successors, (386), 309 states have call predecessors, (386), 383 states have return successors, (549), 413 states have call predecessors, (549), 384 states have call successors, (549) [2022-07-12 09:30:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 4629 transitions. [2022-07-12 09:30:48,525 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 4629 transitions. Word has length 68 [2022-07-12 09:30:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 4629 transitions. [2022-07-12 09:30:48,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 4629 transitions. [2022-07-12 09:30:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:48,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:48,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:30:48,528 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1043081909, now seen corresponding path program 1 times [2022-07-12 09:30:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:48,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041720590] [2022-07-12 09:30:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041720590] [2022-07-12 09:30:48,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041720590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:48,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:48,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:48,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975904340] [2022-07-12 09:30:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:48,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:48,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:48,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:48,598 INFO L87 Difference]: Start difference. First operand 3641 states and 4629 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:49,538 INFO L93 Difference]: Finished difference Result 4900 states and 6456 transitions. [2022-07-12 09:30:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:49,554 INFO L225 Difference]: With dead ends: 4900 [2022-07-12 09:30:49,554 INFO L226 Difference]: Without dead ends: 4349 [2022-07-12 09:30:49,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:30:49,559 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 604 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:49,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1194 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:30:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2022-07-12 09:30:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4062. [2022-07-12 09:30:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3225 states have (on average 1.3048062015503876) internal successors, (4208), 3283 states have internal predecessors, (4208), 424 states have call successors, (424), 333 states have call predecessors, (424), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2022-07-12 09:30:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 5241 transitions. [2022-07-12 09:30:49,753 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 5241 transitions. Word has length 68 [2022-07-12 09:30:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:49,753 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 5241 transitions. [2022-07-12 09:30:49,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 5241 transitions. [2022-07-12 09:30:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:49,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:49,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:30:49,757 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1524162167, now seen corresponding path program 1 times [2022-07-12 09:30:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:49,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619279639] [2022-07-12 09:30:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:49,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619279639] [2022-07-12 09:30:49,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619279639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:49,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:49,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978447762] [2022-07-12 09:30:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:49,836 INFO L87 Difference]: Start difference. First operand 4062 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:50,634 INFO L93 Difference]: Finished difference Result 5571 states and 7468 transitions. [2022-07-12 09:30:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:30:50,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:50,651 INFO L225 Difference]: With dead ends: 5571 [2022-07-12 09:30:50,651 INFO L226 Difference]: Without dead ends: 4600 [2022-07-12 09:30:50,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:30:50,658 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 363 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:50,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1035 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:30:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2022-07-12 09:30:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4089. [2022-07-12 09:30:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 3252 states have (on average 1.3022755227552276) internal successors, (4235), 3310 states have internal predecessors, (4235), 424 states have call successors, (424), 333 states have call predecessors, (424), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2022-07-12 09:30:50,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5268 transitions. [2022-07-12 09:30:50,921 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5268 transitions. Word has length 68 [2022-07-12 09:30:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:50,921 INFO L495 AbstractCegarLoop]: Abstraction has 4089 states and 5268 transitions. [2022-07-12 09:30:50,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5268 transitions. [2022-07-12 09:30:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:30:50,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:50,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:30:50,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1100515445, now seen corresponding path program 1 times [2022-07-12 09:30:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:50,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350802699] [2022-07-12 09:30:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:30:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:30:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350802699] [2022-07-12 09:30:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350802699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:51,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:51,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110626734] [2022-07-12 09:30:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:51,027 INFO L87 Difference]: Start difference. First operand 4089 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:52,391 INFO L93 Difference]: Finished difference Result 7556 states and 10472 transitions. [2022-07-12 09:30:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:30:52,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-12 09:30:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:52,417 INFO L225 Difference]: With dead ends: 7556 [2022-07-12 09:30:52,417 INFO L226 Difference]: Without dead ends: 6558 [2022-07-12 09:30:52,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:30:52,425 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1369 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 1057 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:30:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2022-07-12 09:30:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6007. [2022-07-12 09:30:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6007 states, 4848 states have (on average 1.3401402640264026) internal successors, (6497), 4937 states have internal predecessors, (6497), 616 states have call successors, (616), 447 states have call predecessors, (616), 541 states have return successors, (918), 632 states have call predecessors, (918), 614 states have call successors, (918) [2022-07-12 09:30:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 8031 transitions. [2022-07-12 09:30:52,766 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 8031 transitions. Word has length 68 [2022-07-12 09:30:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:52,766 INFO L495 AbstractCegarLoop]: Abstraction has 6007 states and 8031 transitions. [2022-07-12 09:30:52,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:52,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 8031 transitions. [2022-07-12 09:30:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:30:52,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:52,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:52,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:30:52,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:52,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1248585640, now seen corresponding path program 1 times [2022-07-12 09:30:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:52,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847070559] [2022-07-12 09:30:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:52,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:52,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847070559] [2022-07-12 09:30:52,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847070559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:52,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:52,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:30:52,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511812639] [2022-07-12 09:30:52,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:52,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:30:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:30:52,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:30:52,818 INFO L87 Difference]: Start difference. First operand 6007 states and 8031 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:53,370 INFO L93 Difference]: Finished difference Result 9593 states and 12461 transitions. [2022-07-12 09:30:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:30:53,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-12 09:30:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:53,390 INFO L225 Difference]: With dead ends: 9593 [2022-07-12 09:30:53,390 INFO L226 Difference]: Without dead ends: 6523 [2022-07-12 09:30:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:53,399 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 558 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 798 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:30:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2022-07-12 09:30:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6290. [2022-07-12 09:30:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6290 states, 5073 states have (on average 1.3335304553518628) internal successors, (6765), 5165 states have internal predecessors, (6765), 644 states have call successors, (644), 472 states have call predecessors, (644), 571 states have return successors, (952), 662 states have call predecessors, (952), 642 states have call successors, (952) [2022-07-12 09:30:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6290 states to 6290 states and 8361 transitions. [2022-07-12 09:30:53,813 INFO L78 Accepts]: Start accepts. Automaton has 6290 states and 8361 transitions. Word has length 72 [2022-07-12 09:30:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:53,814 INFO L495 AbstractCegarLoop]: Abstraction has 6290 states and 8361 transitions. [2022-07-12 09:30:53,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:30:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6290 states and 8361 transitions. [2022-07-12 09:30:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:30:53,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:53,817 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:53,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:30:53,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:53,818 INFO L85 PathProgramCache]: Analyzing trace with hash -567645225, now seen corresponding path program 1 times [2022-07-12 09:30:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:53,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133670122] [2022-07-12 09:30:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:53,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133670122] [2022-07-12 09:30:53,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133670122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:53,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:53,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771272204] [2022-07-12 09:30:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:53,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:53,894 INFO L87 Difference]: Start difference. First operand 6290 states and 8361 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:30:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:54,513 INFO L93 Difference]: Finished difference Result 7344 states and 9628 transitions. [2022-07-12 09:30:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:30:54,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-12 09:30:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:54,535 INFO L225 Difference]: With dead ends: 7344 [2022-07-12 09:30:54,535 INFO L226 Difference]: Without dead ends: 7341 [2022-07-12 09:30:54,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:30:54,539 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1015 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:54,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 634 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:30:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2022-07-12 09:30:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 7047. [2022-07-12 09:30:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 5651 states have (on average 1.3208281720049548) internal successors, (7464), 5750 states have internal predecessors, (7464), 727 states have call successors, (727), 544 states have call predecessors, (727), 667 states have return successors, (1080), 762 states have call predecessors, (1080), 726 states have call successors, (1080) [2022-07-12 09:30:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 9271 transitions. [2022-07-12 09:30:54,938 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 9271 transitions. Word has length 73 [2022-07-12 09:30:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:54,938 INFO L495 AbstractCegarLoop]: Abstraction has 7047 states and 9271 transitions. [2022-07-12 09:30:54,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:30:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 9271 transitions. [2022-07-12 09:30:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:30:54,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:54,941 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:54,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:30:54,941 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash -417832830, now seen corresponding path program 1 times [2022-07-12 09:30:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:54,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011257668] [2022-07-12 09:30:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:54,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011257668] [2022-07-12 09:30:55,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011257668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:30:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896022092] [2022-07-12 09:30:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:30:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:30:55,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:30:55,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:30:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:30:55,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:30:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:55,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:30:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:55,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896022092] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:30:55,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:30:55,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:30:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443942689] [2022-07-12 09:30:55,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:30:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:30:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:30:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:30:55,613 INFO L87 Difference]: Start difference. First operand 7047 states and 9271 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:30:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:57,522 INFO L93 Difference]: Finished difference Result 11466 states and 14645 transitions. [2022-07-12 09:30:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:30:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-12 09:30:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:57,558 INFO L225 Difference]: With dead ends: 11466 [2022-07-12 09:30:57,558 INFO L226 Difference]: Without dead ends: 11463 [2022-07-12 09:30:57,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:30:57,564 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1183 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:57,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1518 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:30:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11463 states. [2022-07-12 09:30:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11463 to 10606. [2022-07-12 09:30:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10606 states, 8436 states have (on average 1.2917259364627787) internal successors, (10897), 8586 states have internal predecessors, (10897), 1097 states have call successors, (1097), 869 states have call predecessors, (1097), 1071 states have return successors, (1626), 1160 states have call predecessors, (1626), 1096 states have call successors, (1626) [2022-07-12 09:30:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10606 states to 10606 states and 13620 transitions. [2022-07-12 09:30:58,384 INFO L78 Accepts]: Start accepts. Automaton has 10606 states and 13620 transitions. Word has length 74 [2022-07-12 09:30:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:58,385 INFO L495 AbstractCegarLoop]: Abstraction has 10606 states and 13620 transitions. [2022-07-12 09:30:58,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:30:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 10606 states and 13620 transitions. [2022-07-12 09:30:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:30:58,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:58,388 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:58,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:30:58,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:30:58,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1736050409, now seen corresponding path program 2 times [2022-07-12 09:30:58,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:58,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590713266] [2022-07-12 09:30:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:58,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:58,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590713266] [2022-07-12 09:30:58,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590713266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:58,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:58,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:30:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972195578] [2022-07-12 09:30:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:30:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:30:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:30:58,657 INFO L87 Difference]: Start difference. First operand 10606 states and 13620 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:30:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:59,350 INFO L93 Difference]: Finished difference Result 13615 states and 17344 transitions. [2022-07-12 09:30:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:30:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-12 09:30:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:59,375 INFO L225 Difference]: With dead ends: 13615 [2022-07-12 09:30:59,375 INFO L226 Difference]: Without dead ends: 6817 [2022-07-12 09:30:59,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:30:59,393 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 627 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:59,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 702 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:30:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2022-07-12 09:30:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 5791. [2022-07-12 09:30:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4687 states have (on average 1.3266481758054192) internal successors, (6218), 4759 states have internal predecessors, (6218), 597 states have call successors, (597), 434 states have call predecessors, (597), 505 states have return successors, (852), 607 states have call predecessors, (852), 596 states have call successors, (852) [2022-07-12 09:30:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7667 transitions. [2022-07-12 09:30:59,762 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7667 transitions. Word has length 77 [2022-07-12 09:30:59,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:59,762 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 7667 transitions. [2022-07-12 09:30:59,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:30:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7667 transitions. [2022-07-12 09:30:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:30:59,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:59,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:59,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:30:59,767 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 413429076, now seen corresponding path program 1 times [2022-07-12 09:30:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:59,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018020404] [2022-07-12 09:30:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:30:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:30:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:30:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:30:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:30:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:30:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:30:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:30:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018020404] [2022-07-12 09:30:59,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018020404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:59,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:59,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:30:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719970804] [2022-07-12 09:30:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:59,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:30:59,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:30:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:30:59,827 INFO L87 Difference]: Start difference. First operand 5791 states and 7667 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:01,011 INFO L93 Difference]: Finished difference Result 11515 states and 14591 transitions. [2022-07-12 09:31:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:31:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-12 09:31:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:01,038 INFO L225 Difference]: With dead ends: 11515 [2022-07-12 09:31:01,039 INFO L226 Difference]: Without dead ends: 7719 [2022-07-12 09:31:01,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:31:01,052 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1080 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:01,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 980 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2022-07-12 09:31:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7488. [2022-07-12 09:31:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 5981 states have (on average 1.2909212506269854) internal successors, (7721), 6090 states have internal predecessors, (7721), 781 states have call successors, (781), 592 states have call predecessors, (781), 724 states have return successors, (1173), 815 states have call predecessors, (1173), 780 states have call successors, (1173) [2022-07-12 09:31:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 9675 transitions. [2022-07-12 09:31:01,590 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 9675 transitions. Word has length 84 [2022-07-12 09:31:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:01,590 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 9675 transitions. [2022-07-12 09:31:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 9675 transitions. [2022-07-12 09:31:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:31:01,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:01,597 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:31:01,597 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2108218901, now seen corresponding path program 1 times [2022-07-12 09:31:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:01,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471329350] [2022-07-12 09:31:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:31:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471329350] [2022-07-12 09:31:01,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471329350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:01,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:01,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212952319] [2022-07-12 09:31:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:01,696 INFO L87 Difference]: Start difference. First operand 7488 states and 9675 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:02,962 INFO L93 Difference]: Finished difference Result 10367 states and 13159 transitions. [2022-07-12 09:31:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:31:02,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-12 09:31:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:02,982 INFO L225 Difference]: With dead ends: 10367 [2022-07-12 09:31:02,983 INFO L226 Difference]: Without dead ends: 6553 [2022-07-12 09:31:02,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:31:02,993 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1143 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:02,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1312 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states. [2022-07-12 09:31:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 6176. [2022-07-12 09:31:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 4953 states have (on average 1.301029678982435) internal successors, (6444), 5045 states have internal predecessors, (6444), 639 states have call successors, (639), 468 states have call predecessors, (639), 582 states have return successors, (938), 672 states have call predecessors, (938), 638 states have call successors, (938) [2022-07-12 09:31:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 8021 transitions. [2022-07-12 09:31:03,458 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 8021 transitions. Word has length 93 [2022-07-12 09:31:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:03,458 INFO L495 AbstractCegarLoop]: Abstraction has 6176 states and 8021 transitions. [2022-07-12 09:31:03,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 8021 transitions. [2022-07-12 09:31:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 09:31:03,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:03,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:31:03,466 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1351020765, now seen corresponding path program 1 times [2022-07-12 09:31:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686053119] [2022-07-12 09:31:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:31:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:31:03,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:03,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686053119] [2022-07-12 09:31:03,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686053119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:03,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132613280] [2022-07-12 09:31:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:03,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:03,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:03,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:31:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:03,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:03,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 09:31:03,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:03,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132613280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:03,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:03,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:03,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357755367] [2022-07-12 09:31:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:03,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:03,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:03,659 INFO L87 Difference]: Start difference. First operand 6176 states and 8021 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:04,029 INFO L93 Difference]: Finished difference Result 9315 states and 12655 transitions. [2022-07-12 09:31:04,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-12 09:31:04,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:04,047 INFO L225 Difference]: With dead ends: 9315 [2022-07-12 09:31:04,047 INFO L226 Difference]: Without dead ends: 6706 [2022-07-12 09:31:04,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:04,055 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 142 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:04,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 759 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6706 states. [2022-07-12 09:31:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6706 to 6706. [2022-07-12 09:31:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6706 states, 5400 states have (on average 1.3101851851851851) internal successors, (7075), 5496 states have internal predecessors, (7075), 688 states have call successors, (688), 498 states have call predecessors, (688), 616 states have return successors, (1016), 721 states have call predecessors, (1016), 687 states have call successors, (1016) [2022-07-12 09:31:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6706 states to 6706 states and 8779 transitions. [2022-07-12 09:31:04,489 INFO L78 Accepts]: Start accepts. Automaton has 6706 states and 8779 transitions. Word has length 110 [2022-07-12 09:31:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:04,489 INFO L495 AbstractCegarLoop]: Abstraction has 6706 states and 8779 transitions. [2022-07-12 09:31:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6706 states and 8779 transitions. [2022-07-12 09:31:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:31:04,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:04,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:04,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-12 09:31:04,716 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2067289164, now seen corresponding path program 1 times [2022-07-12 09:31:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:04,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710026983] [2022-07-12 09:31:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:31:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:31:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:31:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:31:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:31:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:31:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:31:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:04,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710026983] [2022-07-12 09:31:04,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710026983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:04,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007226679] [2022-07-12 09:31:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:04,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:04,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:04,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:04,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:31:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:31:04,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:31:04,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:04,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007226679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:04,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:04,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:31:04,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271227145] [2022-07-12 09:31:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:04,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:04,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:31:04,936 INFO L87 Difference]: Start difference. First operand 6706 states and 8779 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:31:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:05,257 INFO L93 Difference]: Finished difference Result 8385 states and 10792 transitions. [2022-07-12 09:31:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:05,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-12 09:31:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:05,274 INFO L225 Difference]: With dead ends: 8385 [2022-07-12 09:31:05,275 INFO L226 Difference]: Without dead ends: 5148 [2022-07-12 09:31:05,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:31:05,284 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 34 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:05,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1515 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2022-07-12 09:31:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5025. [2022-07-12 09:31:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4161 states have (on average 1.3470319634703196) internal successors, (5605), 4218 states have internal predecessors, (5605), 480 states have call successors, (480), 315 states have call predecessors, (480), 382 states have return successors, (722), 499 states have call predecessors, (722), 479 states have call successors, (722) [2022-07-12 09:31:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6807 transitions. [2022-07-12 09:31:05,656 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6807 transitions. Word has length 145 [2022-07-12 09:31:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:05,657 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6807 transitions. [2022-07-12 09:31:05,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:31:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6807 transitions. [2022-07-12 09:31:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 09:31:05,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:05,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:05,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:05,892 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash -780820679, now seen corresponding path program 1 times [2022-07-12 09:31:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196623576] [2022-07-12 09:31:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 09:31:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 09:31:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 09:31:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:05,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196623576] [2022-07-12 09:31:05,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196623576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:05,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168666217] [2022-07-12 09:31:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:05,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:05,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:05,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:31:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:06,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 09:31:06,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:06,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168666217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:06,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:06,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:31:06,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760022931] [2022-07-12 09:31:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:06,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:06,221 INFO L87 Difference]: Start difference. First operand 5025 states and 6807 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:31:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:06,575 INFO L93 Difference]: Finished difference Result 11727 states and 16588 transitions. [2022-07-12 09:31:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-12 09:31:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:06,605 INFO L225 Difference]: With dead ends: 11727 [2022-07-12 09:31:06,605 INFO L226 Difference]: Without dead ends: 8281 [2022-07-12 09:31:06,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:06,619 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 223 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:06,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 477 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2022-07-12 09:31:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8213. [2022-07-12 09:31:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 6839 states have (on average 1.3749086123702297) internal successors, (9403), 6939 states have internal predecessors, (9403), 772 states have call successors, (772), 505 states have call predecessors, (772), 600 states have return successors, (1166), 776 states have call predecessors, (1166), 771 states have call successors, (1166) [2022-07-12 09:31:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 11341 transitions. [2022-07-12 09:31:07,194 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 11341 transitions. Word has length 142 [2022-07-12 09:31:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:07,194 INFO L495 AbstractCegarLoop]: Abstraction has 8213 states and 11341 transitions. [2022-07-12 09:31:07,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:31:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 11341 transitions. [2022-07-12 09:31:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 09:31:07,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:07,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:07,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:07,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:07,432 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:07,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1249840909, now seen corresponding path program 1 times [2022-07-12 09:31:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:07,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342533242] [2022-07-12 09:31:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:31:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 09:31:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 09:31:07,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342533242] [2022-07-12 09:31:07,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342533242] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110285792] [2022-07-12 09:31:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:07,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:07,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:07,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:31:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:07,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 09:31:07,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:07,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110285792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:07,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:07,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:31:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190163863] [2022-07-12 09:31:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:07,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:07,704 INFO L87 Difference]: Start difference. First operand 8213 states and 11341 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:31:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:08,141 INFO L93 Difference]: Finished difference Result 15445 states and 21897 transitions. [2022-07-12 09:31:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-12 09:31:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:08,178 INFO L225 Difference]: With dead ends: 15445 [2022-07-12 09:31:08,178 INFO L226 Difference]: Without dead ends: 11287 [2022-07-12 09:31:08,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:08,196 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 224 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:08,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2022-07-12 09:31:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 11189. [2022-07-12 09:31:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11189 states, 9340 states have (on average 1.386830835117773) internal successors, (12953), 9474 states have internal predecessors, (12953), 1048 states have call successors, (1048), 680 states have call predecessors, (1048), 799 states have return successors, (1561), 1042 states have call predecessors, (1561), 1047 states have call successors, (1561) [2022-07-12 09:31:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11189 states to 11189 states and 15562 transitions. [2022-07-12 09:31:08,972 INFO L78 Accepts]: Start accepts. Automaton has 11189 states and 15562 transitions. Word has length 142 [2022-07-12 09:31:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:08,972 INFO L495 AbstractCegarLoop]: Abstraction has 11189 states and 15562 transitions. [2022-07-12 09:31:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 09:31:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 11189 states and 15562 transitions. [2022-07-12 09:31:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:31:08,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:08,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:09,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 09:31:09,212 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1963898390, now seen corresponding path program 1 times [2022-07-12 09:31:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:09,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842284377] [2022-07-12 09:31:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 09:31:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:31:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 09:31:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 09:31:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 09:31:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 09:31:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842284377] [2022-07-12 09:31:09,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842284377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:09,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:09,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851008471] [2022-07-12 09:31:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:09,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:09,303 INFO L87 Difference]: Start difference. First operand 11189 states and 15562 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 09:31:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:10,170 INFO L93 Difference]: Finished difference Result 12472 states and 17082 transitions. [2022-07-12 09:31:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:31:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-12 09:31:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:10,202 INFO L225 Difference]: With dead ends: 12472 [2022-07-12 09:31:10,202 INFO L226 Difference]: Without dead ends: 11082 [2022-07-12 09:31:10,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:10,212 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 277 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:10,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1087 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2022-07-12 09:31:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10936. [2022-07-12 09:31:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10936 states, 9138 states have (on average 1.3923177938279712) internal successors, (12723), 9272 states have internal predecessors, (12723), 1023 states have call successors, (1023), 659 states have call predecessors, (1023), 773 states have return successors, (1523), 1012 states have call predecessors, (1523), 1022 states have call successors, (1523) [2022-07-12 09:31:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 15269 transitions. [2022-07-12 09:31:10,805 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 15269 transitions. Word has length 159 [2022-07-12 09:31:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:10,805 INFO L495 AbstractCegarLoop]: Abstraction has 10936 states and 15269 transitions. [2022-07-12 09:31:10,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 09:31:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 15269 transitions. [2022-07-12 09:31:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 09:31:10,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:10,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:31:10,818 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2024023184, now seen corresponding path program 1 times [2022-07-12 09:31:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603228624] [2022-07-12 09:31:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 09:31:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 09:31:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 09:31:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 09:31:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 09:31:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:31:10,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603228624] [2022-07-12 09:31:10,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603228624] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:10,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896504916] [2022-07-12 09:31:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:10,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:10,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:10,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:31:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:11,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 09:31:11,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 09:31:11,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896504916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:11,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:11,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-12 09:31:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717468435] [2022-07-12 09:31:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:11,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:31:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:31:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:11,169 INFO L87 Difference]: Start difference. First operand 10936 states and 15269 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 09:31:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:11,788 INFO L93 Difference]: Finished difference Result 13262 states and 18077 transitions. [2022-07-12 09:31:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:31:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-12 09:31:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:11,825 INFO L225 Difference]: With dead ends: 13262 [2022-07-12 09:31:11,825 INFO L226 Difference]: Without dead ends: 11852 [2022-07-12 09:31:11,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:31:11,837 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 176 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:11,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 602 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2022-07-12 09:31:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 11810. [2022-07-12 09:31:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11810 states, 9869 states have (on average 1.3739993920356672) internal successors, (13560), 10007 states have internal predecessors, (13560), 1093 states have call successors, (1093), 710 states have call predecessors, (1093), 846 states have return successors, (1634), 1100 states have call predecessors, (1634), 1092 states have call successors, (1634) [2022-07-12 09:31:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 16287 transitions. [2022-07-12 09:31:12,593 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 16287 transitions. Word has length 162 [2022-07-12 09:31:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:12,594 INFO L495 AbstractCegarLoop]: Abstraction has 11810 states and 16287 transitions. [2022-07-12 09:31:12,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 09:31:12,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 16287 transitions. [2022-07-12 09:31:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:31:12,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:12,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:12,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:12,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 09:31:12,806 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1155161780, now seen corresponding path program 1 times [2022-07-12 09:31:12,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:12,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443592196] [2022-07-12 09:31:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 09:31:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:31:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 09:31:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 09:31:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 09:31:12,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:12,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443592196] [2022-07-12 09:31:12,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443592196] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706363307] [2022-07-12 09:31:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:12,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:12,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:12,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 09:31:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:13,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:13,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:31:13,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:13,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706363307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:13,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:13,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869548298] [2022-07-12 09:31:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:13,092 INFO L87 Difference]: Start difference. First operand 11810 states and 16287 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:31:13,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:13,640 INFO L93 Difference]: Finished difference Result 20578 states and 28793 transitions. [2022-07-12 09:31:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:13,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-12 09:31:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:13,664 INFO L225 Difference]: With dead ends: 20578 [2022-07-12 09:31:13,664 INFO L226 Difference]: Without dead ends: 10969 [2022-07-12 09:31:13,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:13,682 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 243 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:13,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10969 states. [2022-07-12 09:31:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10969 to 10969. [2022-07-12 09:31:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 9233 states have (on average 1.3275208491281274) internal successors, (12257), 9335 states have internal predecessors, (12257), 941 states have call successors, (941), 673 states have call predecessors, (941), 793 states have return successors, (1359), 968 states have call predecessors, (1359), 940 states have call successors, (1359) [2022-07-12 09:31:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 14557 transitions. [2022-07-12 09:31:14,301 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 14557 transitions. Word has length 159 [2022-07-12 09:31:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:14,302 INFO L495 AbstractCegarLoop]: Abstraction has 10969 states and 14557 transitions. [2022-07-12 09:31:14,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:31:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 14557 transitions. [2022-07-12 09:31:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:31:14,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:14,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:31:14,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 09:31:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:14,516 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1290655762, now seen corresponding path program 1 times [2022-07-12 09:31:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:14,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373956001] [2022-07-12 09:31:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 09:31:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:31:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 09:31:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 09:31:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 09:31:14,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:14,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373956001] [2022-07-12 09:31:14,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373956001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:14,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670198390] [2022-07-12 09:31:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:14,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:14,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:14,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 09:31:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:31:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 09:31:14,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:14,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670198390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:14,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:14,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601335585] [2022-07-12 09:31:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:14,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:14,721 INFO L87 Difference]: Start difference. First operand 10969 states and 14557 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 09:31:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:15,471 INFO L93 Difference]: Finished difference Result 20513 states and 27506 transitions. [2022-07-12 09:31:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 159 [2022-07-12 09:31:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:15,501 INFO L225 Difference]: With dead ends: 20513 [2022-07-12 09:31:15,501 INFO L226 Difference]: Without dead ends: 11745 [2022-07-12 09:31:15,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:15,520 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 282 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 486 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11745 states. [2022-07-12 09:31:16,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11745 to 11600. [2022-07-12 09:31:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 9823 states have (on average 1.3008245953374733) internal successors, (12778), 9920 states have internal predecessors, (12778), 940 states have call successors, (940), 712 states have call predecessors, (940), 835 states have return successors, (1344), 975 states have call predecessors, (1344), 939 states have call successors, (1344) [2022-07-12 09:31:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 15062 transitions. [2022-07-12 09:31:16,312 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 15062 transitions. Word has length 159 [2022-07-12 09:31:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:16,313 INFO L495 AbstractCegarLoop]: Abstraction has 11600 states and 15062 transitions. [2022-07-12 09:31:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 09:31:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 15062 transitions. [2022-07-12 09:31:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 09:31:16,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:16,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:31:16,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:16,523 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1913530268, now seen corresponding path program 1 times [2022-07-12 09:31:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863377142] [2022-07-12 09:31:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 09:31:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 09:31:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 09:31:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 09:31:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:16,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863377142] [2022-07-12 09:31:16,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863377142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:16,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173885947] [2022-07-12 09:31:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:16,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:16,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 09:31:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:16,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:16,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 09:31:16,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:16,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173885947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:16,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:16,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649843698] [2022-07-12 09:31:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:16,742 INFO L87 Difference]: Start difference. First operand 11600 states and 15062 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 09:31:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:17,731 INFO L93 Difference]: Finished difference Result 28635 states and 38025 transitions. [2022-07-12 09:31:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 160 [2022-07-12 09:31:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:17,769 INFO L225 Difference]: With dead ends: 28635 [2022-07-12 09:31:17,769 INFO L226 Difference]: Without dead ends: 19236 [2022-07-12 09:31:17,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:17,786 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 140 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:17,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 763 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19236 states. [2022-07-12 09:31:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19236 to 19234. [2022-07-12 09:31:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 16266 states have (on average 1.3089880732816919) internal successors, (21292), 16443 states have internal predecessors, (21292), 1595 states have call successors, (1595), 1181 states have call predecessors, (1595), 1371 states have return successors, (2507), 1625 states have call predecessors, (2507), 1594 states have call successors, (2507) [2022-07-12 09:31:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 25394 transitions. [2022-07-12 09:31:18,774 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 25394 transitions. Word has length 160 [2022-07-12 09:31:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:18,774 INFO L495 AbstractCegarLoop]: Abstraction has 19234 states and 25394 transitions. [2022-07-12 09:31:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 09:31:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 25394 transitions. [2022-07-12 09:31:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 09:31:18,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:18,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:31:18,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 09:31:18,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:18,989 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -283261215, now seen corresponding path program 1 times [2022-07-12 09:31:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:18,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373730864] [2022-07-12 09:31:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 09:31:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 09:31:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 09:31:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 09:31:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 09:31:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:19,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373730864] [2022-07-12 09:31:19,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373730864] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270293806] [2022-07-12 09:31:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:19,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:19,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:19,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 09:31:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:19,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:31:19,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 09:31:19,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270293806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:19,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:19,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350874834] [2022-07-12 09:31:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:19,224 INFO L87 Difference]: Start difference. First operand 19234 states and 25394 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 09:31:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:20,883 INFO L93 Difference]: Finished difference Result 52609 states and 70950 transitions. [2022-07-12 09:31:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:20,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-12 09:31:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:20,990 INFO L225 Difference]: With dead ends: 52609 [2022-07-12 09:31:20,990 INFO L226 Difference]: Without dead ends: 35580 [2022-07-12 09:31:21,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:21,026 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 269 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:21,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35580 states. [2022-07-12 09:31:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35580 to 35376. [2022-07-12 09:31:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35376 states, 29954 states have (on average 1.3067369967283167) internal successors, (39142), 30291 states have internal predecessors, (39142), 2925 states have call successors, (2925), 2177 states have call predecessors, (2925), 2495 states have return successors, (5546), 2939 states have call predecessors, (5546), 2924 states have call successors, (5546) [2022-07-12 09:31:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35376 states to 35376 states and 47613 transitions. [2022-07-12 09:31:23,257 INFO L78 Accepts]: Start accepts. Automaton has 35376 states and 47613 transitions. Word has length 160 [2022-07-12 09:31:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:23,257 INFO L495 AbstractCegarLoop]: Abstraction has 35376 states and 47613 transitions. [2022-07-12 09:31:23,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 09:31:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 35376 states and 47613 transitions. [2022-07-12 09:31:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 09:31:23,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:23,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:31:23,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-12 09:31:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-12 09:31:23,491 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1408086307, now seen corresponding path program 1 times [2022-07-12 09:31:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:23,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110548083] [2022-07-12 09:31:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:23,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 09:31:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 09:31:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 09:31:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 09:31:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 09:31:23,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:23,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110548083] [2022-07-12 09:31:23,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110548083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:23,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:23,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:31:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019168437] [2022-07-12 09:31:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:31:23,706 INFO L87 Difference]: Start difference. First operand 35376 states and 47613 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:25,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:25,907 INFO L93 Difference]: Finished difference Result 64719 states and 87314 transitions. [2022-07-12 09:31:25,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:25,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-12 09:31:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:26,010 INFO L225 Difference]: With dead ends: 64719 [2022-07-12 09:31:26,010 INFO L226 Difference]: Without dead ends: 31546 [2022-07-12 09:31:26,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:26,051 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 409 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:26,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 592 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31546 states. [2022-07-12 09:31:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31546 to 29366. [2022-07-12 09:31:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29366 states, 24822 states have (on average 1.3066634437192812) internal successors, (32434), 25324 states have internal predecessors, (32434), 2247 states have call successors, (2247), 1669 states have call predecessors, (2247), 2295 states have return successors, (4633), 2388 states have call predecessors, (4633), 2246 states have call successors, (4633) [2022-07-12 09:31:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29366 states to 29366 states and 39314 transitions. [2022-07-12 09:31:28,092 INFO L78 Accepts]: Start accepts. Automaton has 29366 states and 39314 transitions. Word has length 160 [2022-07-12 09:31:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:28,093 INFO L495 AbstractCegarLoop]: Abstraction has 29366 states and 39314 transitions. [2022-07-12 09:31:28,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 29366 states and 39314 transitions. [2022-07-12 09:31:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 09:31:28,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:28,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:31:28,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 09:31:28,124 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 984139709, now seen corresponding path program 1 times [2022-07-12 09:31:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482078379] [2022-07-12 09:31:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 09:31:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 09:31:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 09:31:28,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:28,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482078379] [2022-07-12 09:31:28,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482078379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:28,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519711689] [2022-07-12 09:31:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:28,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:28,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:28,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:28,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 09:31:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:28,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:31:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 09:31:28,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:28,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519711689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:28,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:28,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:28,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49815577] [2022-07-12 09:31:28,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:28,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:28,348 INFO L87 Difference]: Start difference. First operand 29366 states and 39314 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 09:31:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:30,211 INFO L93 Difference]: Finished difference Result 47959 states and 66550 transitions. [2022-07-12 09:31:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-12 09:31:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:30,275 INFO L225 Difference]: With dead ends: 47959 [2022-07-12 09:31:30,275 INFO L226 Difference]: Without dead ends: 29450 [2022-07-12 09:31:30,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:30,305 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 129 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:30,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 709 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29450 states. [2022-07-12 09:31:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29450 to 29366. [2022-07-12 09:31:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29366 states, 24822 states have (on average 1.2836596567561034) internal successors, (31863), 25324 states have internal predecessors, (31863), 2247 states have call successors, (2247), 1669 states have call predecessors, (2247), 2295 states have return successors, (4633), 2388 states have call predecessors, (4633), 2246 states have call successors, (4633) [2022-07-12 09:31:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29366 states to 29366 states and 38743 transitions. [2022-07-12 09:31:32,142 INFO L78 Accepts]: Start accepts. Automaton has 29366 states and 38743 transitions. Word has length 162 [2022-07-12 09:31:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:32,143 INFO L495 AbstractCegarLoop]: Abstraction has 29366 states and 38743 transitions. [2022-07-12 09:31:32,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 09:31:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 29366 states and 38743 transitions. [2022-07-12 09:31:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 09:31:32,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:32,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:32,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-12 09:31:32,368 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:32,368 INFO L85 PathProgramCache]: Analyzing trace with hash 264046557, now seen corresponding path program 1 times [2022-07-12 09:31:32,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:32,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255390960] [2022-07-12 09:31:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 09:31:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 09:31:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 09:31:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255390960] [2022-07-12 09:31:32,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255390960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506972748] [2022-07-12 09:31:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:32,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:32,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:32,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 09:31:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:32,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 09:31:32,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:32,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506972748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:32,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:32,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154982580] [2022-07-12 09:31:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:32,624 INFO L87 Difference]: Start difference. First operand 29366 states and 38743 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:31:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:34,666 INFO L93 Difference]: Finished difference Result 52177 states and 70914 transitions. [2022-07-12 09:31:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-07-12 09:31:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:34,732 INFO L225 Difference]: With dead ends: 52177 [2022-07-12 09:31:34,732 INFO L226 Difference]: Without dead ends: 28558 [2022-07-12 09:31:34,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:34,763 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 256 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:34,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 336 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-07-12 09:31:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 20580. [2022-07-12 09:31:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20580 states, 17434 states have (on average 1.2317884593323392) internal successors, (21475), 17763 states have internal predecessors, (21475), 1543 states have call successors, (1543), 1171 states have call predecessors, (1543), 1601 states have return successors, (2924), 1653 states have call predecessors, (2924), 1542 states have call successors, (2924) [2022-07-12 09:31:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20580 states to 20580 states and 25942 transitions. [2022-07-12 09:31:36,388 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 25942 transitions. Word has length 162 [2022-07-12 09:31:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:36,388 INFO L495 AbstractCegarLoop]: Abstraction has 20580 states and 25942 transitions. [2022-07-12 09:31:36,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 09:31:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 25942 transitions. [2022-07-12 09:31:36,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 09:31:36,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:36,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:36,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:36,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-12 09:31:36,603 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash -909650319, now seen corresponding path program 1 times [2022-07-12 09:31:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:36,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253010803] [2022-07-12 09:31:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:31:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 09:31:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 09:31:36,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253010803] [2022-07-12 09:31:36,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253010803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:36,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085704720] [2022-07-12 09:31:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:36,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:36,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:36,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 09:31:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 09:31:36,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 09:31:36,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:36,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085704720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:36,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:36,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-12 09:31:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068378780] [2022-07-12 09:31:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:36,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:36,859 INFO L87 Difference]: Start difference. First operand 20580 states and 25942 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:38,676 INFO L93 Difference]: Finished difference Result 37827 states and 48963 transitions. [2022-07-12 09:31:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:31:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-12 09:31:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:38,729 INFO L225 Difference]: With dead ends: 37827 [2022-07-12 09:31:38,729 INFO L226 Difference]: Without dead ends: 20182 [2022-07-12 09:31:38,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:31:38,755 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 376 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:38,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 569 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20182 states. [2022-07-12 09:31:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20182 to 18105. [2022-07-12 09:31:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18105 states, 15343 states have (on average 1.1979404288600666) internal successors, (18380), 15624 states have internal predecessors, (18380), 1351 states have call successors, (1351), 1031 states have call predecessors, (1351), 1409 states have return successors, (2444), 1453 states have call predecessors, (2444), 1350 states have call successors, (2444) [2022-07-12 09:31:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18105 states to 18105 states and 22175 transitions. [2022-07-12 09:31:40,088 INFO L78 Accepts]: Start accepts. Automaton has 18105 states and 22175 transitions. Word has length 164 [2022-07-12 09:31:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:40,088 INFO L495 AbstractCegarLoop]: Abstraction has 18105 states and 22175 transitions. [2022-07-12 09:31:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18105 states and 22175 transitions. [2022-07-12 09:31:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 09:31:40,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:40,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:40,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:40,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-12 09:31:40,299 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1663314291, now seen corresponding path program 1 times [2022-07-12 09:31:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:40,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985949617] [2022-07-12 09:31:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:31:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 09:31:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 09:31:40,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985949617] [2022-07-12 09:31:40,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985949617] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:40,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852038125] [2022-07-12 09:31:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:40,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:40,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:40,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 09:31:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:40,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 09:31:40,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 09:31:40,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:40,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852038125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:40,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:40,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-12 09:31:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152827358] [2022-07-12 09:31:40,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:40,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:40,559 INFO L87 Difference]: Start difference. First operand 18105 states and 22175 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:42,038 INFO L93 Difference]: Finished difference Result 27107 states and 33548 transitions. [2022-07-12 09:31:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:31:42,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-12 09:31:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:42,064 INFO L225 Difference]: With dead ends: 27107 [2022-07-12 09:31:42,065 INFO L226 Difference]: Without dead ends: 15765 [2022-07-12 09:31:42,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:42,077 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 340 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:42,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 543 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15765 states. [2022-07-12 09:31:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15765 to 12312. [2022-07-12 09:31:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12312 states, 10428 states have (on average 1.1813387034906022) internal successors, (12319), 10600 states have internal predecessors, (12319), 933 states have call successors, (933), 701 states have call predecessors, (933), 949 states have return successors, (1648), 1012 states have call predecessors, (1648), 932 states have call successors, (1648) [2022-07-12 09:31:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 14900 transitions. [2022-07-12 09:31:43,111 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 14900 transitions. Word has length 164 [2022-07-12 09:31:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:43,112 INFO L495 AbstractCegarLoop]: Abstraction has 12312 states and 14900 transitions. [2022-07-12 09:31:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 14900 transitions. [2022-07-12 09:31:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 09:31:43,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:43,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:43,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:43,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:43,317 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 570679089, now seen corresponding path program 1 times [2022-07-12 09:31:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:43,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234699863] [2022-07-12 09:31:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:43,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:31:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 09:31:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 09:31:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234699863] [2022-07-12 09:31:43,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234699863] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254544568] [2022-07-12 09:31:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:43,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:43,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:43,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:43,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 09:31:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:31:43,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 09:31:43,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:43,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254544568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:43,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:43,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-12 09:31:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827795103] [2022-07-12 09:31:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:43,527 INFO L87 Difference]: Start difference. First operand 12312 states and 14900 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:44,563 INFO L93 Difference]: Finished difference Result 22280 states and 27510 transitions. [2022-07-12 09:31:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:31:44,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-12 09:31:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:44,584 INFO L225 Difference]: With dead ends: 22280 [2022-07-12 09:31:44,584 INFO L226 Difference]: Without dead ends: 12171 [2022-07-12 09:31:44,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:44,596 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 49 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:44,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1198 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12171 states. [2022-07-12 09:31:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12171 to 11919. [2022-07-12 09:31:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11919 states, 10051 states have (on average 1.1659536364540841) internal successors, (11719), 10212 states have internal predecessors, (11719), 933 states have call successors, (933), 701 states have call predecessors, (933), 933 states have return successors, (1548), 1007 states have call predecessors, (1548), 932 states have call successors, (1548) [2022-07-12 09:31:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11919 states to 11919 states and 14200 transitions. [2022-07-12 09:31:45,584 INFO L78 Accepts]: Start accepts. Automaton has 11919 states and 14200 transitions. Word has length 164 [2022-07-12 09:31:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:45,584 INFO L495 AbstractCegarLoop]: Abstraction has 11919 states and 14200 transitions. [2022-07-12 09:31:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 11919 states and 14200 transitions. [2022-07-12 09:31:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 09:31:45,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:45,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:45,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-12 09:31:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-12 09:31:45,790 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -958773449, now seen corresponding path program 1 times [2022-07-12 09:31:45,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:45,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137888745] [2022-07-12 09:31:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:31:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:31:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 09:31:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 09:31:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137888745] [2022-07-12 09:31:45,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137888745] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:45,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883516638] [2022-07-12 09:31:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:45,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:45,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:45,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 09:31:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:31:45,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 09:31:45,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:45,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883516638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:45,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:45,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-12 09:31:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49010192] [2022-07-12 09:31:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:45,986 INFO L87 Difference]: Start difference. First operand 11919 states and 14200 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:46,783 INFO L93 Difference]: Finished difference Result 18252 states and 22018 transitions. [2022-07-12 09:31:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:31:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-12 09:31:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:46,802 INFO L225 Difference]: With dead ends: 18252 [2022-07-12 09:31:46,802 INFO L226 Difference]: Without dead ends: 8533 [2022-07-12 09:31:46,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:46,818 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 10 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:46,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1183 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-07-12 09:31:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8497. [2022-07-12 09:31:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 7202 states have (on average 1.1564843099139128) internal successors, (8329), 7275 states have internal predecessors, (8329), 662 states have call successors, (662), 501 states have call predecessors, (662), 631 states have return successors, (957), 721 states have call predecessors, (957), 661 states have call successors, (957) [2022-07-12 09:31:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 9948 transitions. [2022-07-12 09:31:47,577 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 9948 transitions. Word has length 164 [2022-07-12 09:31:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:47,577 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 9948 transitions. [2022-07-12 09:31:47,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:31:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 9948 transitions. [2022-07-12 09:31:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-12 09:31:47,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:47,582 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:47,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:47,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-12 09:31:47,783 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash 522298435, now seen corresponding path program 1 times [2022-07-12 09:31:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14779610] [2022-07-12 09:31:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:47,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 09:31:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 09:31:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 09:31:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 09:31:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-12 09:31:47,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:47,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14779610] [2022-07-12 09:31:47,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14779610] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:47,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513786976] [2022-07-12 09:31:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:47,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:47,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:47,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 09:31:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:31:47,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 09:31:47,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:47,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513786976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:47,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:47,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:31:47,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158477329] [2022-07-12 09:31:47,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:47,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:47,997 INFO L87 Difference]: Start difference. First operand 8497 states and 9948 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:31:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:48,423 INFO L93 Difference]: Finished difference Result 10586 states and 12382 transitions. [2022-07-12 09:31:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:48,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 199 [2022-07-12 09:31:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:48,430 INFO L225 Difference]: With dead ends: 10586 [2022-07-12 09:31:48,430 INFO L226 Difference]: Without dead ends: 4209 [2022-07-12 09:31:48,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:48,436 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 126 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:48,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 663 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-07-12 09:31:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2022-07-12 09:31:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3516 states have (on average 1.1515927189988624) internal successors, (4049), 3544 states have internal predecessors, (4049), 360 states have call successors, (360), 267 states have call predecessors, (360), 331 states have return successors, (464), 398 states have call predecessors, (464), 359 states have call successors, (464) [2022-07-12 09:31:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 4873 transitions. [2022-07-12 09:31:48,719 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 4873 transitions. Word has length 199 [2022-07-12 09:31:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:48,719 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 4873 transitions. [2022-07-12 09:31:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:31:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 4873 transitions. [2022-07-12 09:31:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-12 09:31:48,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:48,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:48,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 09:31:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-12 09:31:48,923 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash -430993760, now seen corresponding path program 1 times [2022-07-12 09:31:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:48,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447783523] [2022-07-12 09:31:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 09:31:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 09:31:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 09:31:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 09:31:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 09:31:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 53 proven. 41 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 09:31:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447783523] [2022-07-12 09:31:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447783523] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848652706] [2022-07-12 09:31:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:49,012 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:49,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 09:31:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:31:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 09:31:49,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:49,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848652706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:49,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:49,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-07-12 09:31:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123977664] [2022-07-12 09:31:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:49,194 INFO L87 Difference]: Start difference. First operand 4209 states and 4873 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 09:31:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:49,578 INFO L93 Difference]: Finished difference Result 5700 states and 6604 transitions. [2022-07-12 09:31:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 200 [2022-07-12 09:31:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:49,585 INFO L225 Difference]: With dead ends: 5700 [2022-07-12 09:31:49,586 INFO L226 Difference]: Without dead ends: 4209 [2022-07-12 09:31:49,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:49,589 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 94 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:49,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 616 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-07-12 09:31:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2022-07-12 09:31:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3516 states have (on average 1.1464732650739478) internal successors, (4031), 3544 states have internal predecessors, (4031), 360 states have call successors, (360), 267 states have call predecessors, (360), 331 states have return successors, (464), 398 states have call predecessors, (464), 359 states have call successors, (464) [2022-07-12 09:31:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 4855 transitions. [2022-07-12 09:31:49,881 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 4855 transitions. Word has length 200 [2022-07-12 09:31:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:49,881 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 4855 transitions. [2022-07-12 09:31:49,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 09:31:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 4855 transitions. [2022-07-12 09:31:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 09:31:49,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:49,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:49,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:50,084 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash 288229724, now seen corresponding path program 1 times [2022-07-12 09:31:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:50,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66875526] [2022-07-12 09:31:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:31:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:31:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 09:31:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 09:31:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 09:31:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 09:31:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:31:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 09:31:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-12 09:31:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66875526] [2022-07-12 09:31:50,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66875526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:50,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:50,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736924731] [2022-07-12 09:31:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:50,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:50,217 INFO L87 Difference]: Start difference. First operand 4209 states and 4855 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 09:31:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:51,278 INFO L93 Difference]: Finished difference Result 4620 states and 5302 transitions. [2022-07-12 09:31:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 202 [2022-07-12 09:31:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:51,282 INFO L225 Difference]: With dead ends: 4620 [2022-07-12 09:31:51,282 INFO L226 Difference]: Without dead ends: 2191 [2022-07-12 09:31:51,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:51,285 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 889 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:51,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1203 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2022-07-12 09:31:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2191. [2022-07-12 09:31:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1799 states have (on average 1.1667593107281824) internal successors, (2099), 1815 states have internal predecessors, (2099), 188 states have call successors, (188), 147 states have call predecessors, (188), 203 states have return successors, (277), 228 states have call predecessors, (277), 187 states have call successors, (277) [2022-07-12 09:31:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2564 transitions. [2022-07-12 09:31:51,431 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2564 transitions. Word has length 202 [2022-07-12 09:31:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:51,431 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2564 transitions. [2022-07-12 09:31:51,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 09:31:51,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2564 transitions. [2022-07-12 09:31:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-12 09:31:51,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:51,434 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 09:31:51,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 09:31:51,434 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1879250921, now seen corresponding path program 1 times [2022-07-12 09:31:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:51,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433808268] [2022-07-12 09:31:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:51,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 09:31:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 09:31:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:31:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 09:31:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 09:31:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-12 09:31:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 09:31:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 09:31:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 09:31:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 09:31:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 09:31:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-12 09:31:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 09:31:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433808268] [2022-07-12 09:31:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433808268] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801503693] [2022-07-12 09:31:51,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:51,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:51,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:51,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:51,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 09:31:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 09:31:51,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 09:31:51,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:51,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801503693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:51,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:51,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-12 09:31:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251084739] [2022-07-12 09:31:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:51,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:31:51,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:31:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:51,674 INFO L87 Difference]: Start difference. First operand 2191 states and 2564 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 09:31:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:51,942 INFO L93 Difference]: Finished difference Result 4754 states and 5580 transitions. [2022-07-12 09:31:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:31:51,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 253 [2022-07-12 09:31:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:51,947 INFO L225 Difference]: With dead ends: 4754 [2022-07-12 09:31:51,947 INFO L226 Difference]: Without dead ends: 2663 [2022-07-12 09:31:51,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:51,949 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 104 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:51,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 357 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:31:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-07-12 09:31:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2653. [2022-07-12 09:31:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2156 states have (on average 1.1595547309833023) internal successors, (2500), 2187 states have internal predecessors, (2500), 234 states have call successors, (234), 185 states have call predecessors, (234), 262 states have return successors, (339), 280 states have call predecessors, (339), 233 states have call successors, (339) [2022-07-12 09:31:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 3073 transitions. [2022-07-12 09:31:52,145 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 3073 transitions. Word has length 253 [2022-07-12 09:31:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:52,145 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 3073 transitions. [2022-07-12 09:31:52,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 09:31:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 3073 transitions. [2022-07-12 09:31:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-12 09:31:52,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:52,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 09:31:52,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:52,350 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1448365721, now seen corresponding path program 1 times [2022-07-12 09:31:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343431001] [2022-07-12 09:31:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:31:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 09:31:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 09:31:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:31:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 09:31:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 09:31:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-12 09:31:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 09:31:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 09:31:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-12 09:31:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 09:31:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 09:31:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-12 09:31:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 09:31:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:52,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343431001] [2022-07-12 09:31:52,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343431001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500081319] [2022-07-12 09:31:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:52,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:52,456 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:52,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 09:31:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 09:31:52,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 256 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 09:31:52,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:31:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-12 09:31:52,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500081319] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:31:52,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:31:52,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-07-12 09:31:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011960016] [2022-07-12 09:31:52,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:31:52,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 09:31:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 09:31:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:52,963 INFO L87 Difference]: Start difference. First operand 2653 states and 3073 transitions. Second operand has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-12 09:31:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:53,542 INFO L93 Difference]: Finished difference Result 3735 states and 4327 transitions. [2022-07-12 09:31:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:31:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 253 [2022-07-12 09:31:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:53,544 INFO L225 Difference]: With dead ends: 3735 [2022-07-12 09:31:53,544 INFO L226 Difference]: Without dead ends: 1162 [2022-07-12 09:31:53,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 548 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2022-07-12 09:31:53,546 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 429 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:53,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 457 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-07-12 09:31:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 992. [2022-07-12 09:31:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 793 states have (on average 1.1336696090794451) internal successors, (899), 802 states have internal predecessors, (899), 96 states have call successors, (96), 81 states have call predecessors, (96), 102 states have return successors, (138), 108 states have call predecessors, (138), 95 states have call successors, (138) [2022-07-12 09:31:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1133 transitions. [2022-07-12 09:31:53,627 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1133 transitions. Word has length 253 [2022-07-12 09:31:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:53,628 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1133 transitions. [2022-07-12 09:31:53,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-12 09:31:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1133 transitions. [2022-07-12 09:31:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-12 09:31:53,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:53,629 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 09:31:53,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-12 09:31:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-12 09:31:53,830 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1523923701, now seen corresponding path program 1 times [2022-07-12 09:31:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:53,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645649362] [2022-07-12 09:31:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:31:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:31:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 09:31:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 09:31:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 09:31:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 09:31:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 09:31:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 09:31:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 09:31:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 09:31:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-12 09:31:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-12 09:31:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 09:31:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 09:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 09:31:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-12 09:31:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645649362] [2022-07-12 09:31:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645649362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188822730] [2022-07-12 09:31:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:53,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:53,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:53,922 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:53,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 09:31:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:31:54,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-12 09:31:54,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:54,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188822730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:54,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:54,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2022-07-12 09:31:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886667606] [2022-07-12 09:31:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:54,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:31:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:31:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:54,086 INFO L87 Difference]: Start difference. First operand 992 states and 1133 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 09:31:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:54,199 INFO L93 Difference]: Finished difference Result 1875 states and 2168 transitions. [2022-07-12 09:31:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:31:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 258 [2022-07-12 09:31:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:54,201 INFO L225 Difference]: With dead ends: 1875 [2022-07-12 09:31:54,201 INFO L226 Difference]: Without dead ends: 983 [2022-07-12 09:31:54,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:54,203 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 76 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:54,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:31:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-07-12 09:31:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 980. [2022-07-12 09:31:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 782 states have (on average 1.1176470588235294) internal successors, (874), 791 states have internal predecessors, (874), 96 states have call successors, (96), 81 states have call predecessors, (96), 101 states have return successors, (137), 107 states have call predecessors, (137), 95 states have call successors, (137) [2022-07-12 09:31:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1107 transitions. [2022-07-12 09:31:54,284 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1107 transitions. Word has length 258 [2022-07-12 09:31:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:54,284 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1107 transitions. [2022-07-12 09:31:54,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 09:31:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1107 transitions. [2022-07-12 09:31:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-12 09:31:54,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:54,286 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 09:31:54,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-12 09:31:54,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-12 09:31:54,487 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1060373339, now seen corresponding path program 1 times [2022-07-12 09:31:54,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:54,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069115003] [2022-07-12 09:31:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:54,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:31:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:31:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 09:31:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 09:31:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 09:31:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:31:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 09:31:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 09:31:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 09:31:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 09:31:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 09:31:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 09:31:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 09:31:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 09:31:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-12 09:31:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 09:31:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 75 proven. 12 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-12 09:31:54,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:54,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069115003] [2022-07-12 09:31:54,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069115003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:54,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421342809] [2022-07-12 09:31:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:54,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:54,603 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:54,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 09:31:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:31:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-12 09:31:54,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:31:54,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421342809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:54,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:31:54,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-07-12 09:31:54,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735590202] [2022-07-12 09:31:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:31:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:31:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:54,792 INFO L87 Difference]: Start difference. First operand 980 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 09:31:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:54,941 INFO L93 Difference]: Finished difference Result 1268 states and 1421 transitions. [2022-07-12 09:31:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:31:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 259 [2022-07-12 09:31:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:54,942 INFO L225 Difference]: With dead ends: 1268 [2022-07-12 09:31:54,942 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 09:31:54,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 308 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:54,945 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 54 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:54,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 290 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:31:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 09:31:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 09:31:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:31:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 09:31:54,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2022-07-12 09:31:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:54,946 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 09:31:54,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 09:31:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 09:31:54,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 09:31:54,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:31:54,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:31:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 09:31:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:55,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.