./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.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 a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:07:25,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:07:25,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:07:25,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:07:25,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:07:25,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:07:25,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:07:25,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:07:25,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:07:25,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:07:25,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:07:25,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:07:25,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:07:25,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:07:25,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:07:25,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:07:25,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:07:25,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:07:25,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:07:25,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:07:25,718 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:07:25,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:07:25,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:07:25,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:07:25,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:07:25,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:07:25,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:07:25,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:07:25,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:07:25,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:07:25,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:07:25,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:07:25,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:07:25,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:07:25,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:07:25,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:07:25,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:07:25,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:07:25,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:07:25,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:07:25,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:07:25,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:07:25,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:07:25,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:07:25,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:07:25,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:07:25,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:07:25,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:07:25,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:07:25,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:07:25,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:07:25,771 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:07:25,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:07:25,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:07:25,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:07:25,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:07:25,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:07:25,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:07:25,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:07:25,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:07:25,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:07:25,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:07:25,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:25,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:07:25,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:07:25,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:07:25,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:07:25,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:07:25,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:07:25,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:07:25,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:07:25,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a [2022-07-21 08:07:26,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:07:26,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:07:26,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:07:26,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:07:26,051 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:07:26,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-21 08:07:26,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3daa65285/d54f7ddb0d94480c90928c4524e827bd/FLAG91eab8069 [2022-07-21 08:07:26,576 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:07:26,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-21 08:07:26,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3daa65285/d54f7ddb0d94480c90928c4524e827bd/FLAG91eab8069 [2022-07-21 08:07:27,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3daa65285/d54f7ddb0d94480c90928c4524e827bd [2022-07-21 08:07:27,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:07:27,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:07:27,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:27,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:07:27,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:07:27,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9266fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27, skipping insertion in model container [2022-07-21 08:07:27,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:07:27,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:07:27,246 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.12.cil-1.c[914,927] [2022-07-21 08:07:27,279 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.12.cil-1.c[7115,7128] [2022-07-21 08:07:27,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:27,512 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:07:27,534 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.12.cil-1.c[914,927] [2022-07-21 08:07:27,554 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.12.cil-1.c[7115,7128] [2022-07-21 08:07:27,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:27,641 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:07:27,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27 WrapperNode [2022-07-21 08:07:27,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:27,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:27,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:07:27,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:07:27,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,721 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1045 [2022-07-21 08:07:27,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:27,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:07:27,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:07:27,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:07:27,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:07:27,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:07:27,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:07:27,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:07:27,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (1/1) ... [2022-07-21 08:07:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:27,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:27,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:07:27,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:07:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:07:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:07:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:07:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:07:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:07:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:07:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:07:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:07:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:07:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:07:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:07:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:07:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:07:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:07:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:07:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:07:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:07:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:07:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:07:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:07:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:07:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:07:27,879 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:07:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:07:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:07:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:07:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:07:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:07:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:07:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:07:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:07:27,880 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:07:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-21 08:07:27,881 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-21 08:07:28,043 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:07:28,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:07:28,766 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:07:28,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:07:28,775 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-21 08:07:28,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:28 BoogieIcfgContainer [2022-07-21 08:07:28,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:07:28,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:07:28,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:07:28,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:07:28,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:07:27" (1/3) ... [2022-07-21 08:07:28,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e096777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:28, skipping insertion in model container [2022-07-21 08:07:28,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:27" (2/3) ... [2022-07-21 08:07:28,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e096777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:28, skipping insertion in model container [2022-07-21 08:07:28,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:28" (3/3) ... [2022-07-21 08:07:28,803 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-21 08:07:28,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:07:28,816 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:07:28,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:07:28,860 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@32e701bb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@375793b7 [2022-07-21 08:07:28,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:07:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-21 08:07:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:28,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:28,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:28,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1117056757, now seen corresponding path program 1 times [2022-07-21 08:07:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:28,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556662087] [2022-07-21 08:07:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:29,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556662087] [2022-07-21 08:07:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556662087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:29,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515576923] [2022-07-21 08:07:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:29,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:29,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:29,137 INFO L87 Difference]: Start difference. First operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:30,034 INFO L93 Difference]: Finished difference Result 1088 states and 1744 transitions. [2022-07-21 08:07:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:30,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:07:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:30,056 INFO L225 Difference]: With dead ends: 1088 [2022-07-21 08:07:30,057 INFO L226 Difference]: Without dead ends: 615 [2022-07-21 08:07:30,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:30,069 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1212 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:30,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2509 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-21 08:07:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 576. [2022-07-21 08:07:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 499 states have (on average 1.531062124248497) internal successors, (764), 506 states have internal predecessors, (764), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-21 08:07:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 871 transitions. [2022-07-21 08:07:30,168 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 871 transitions. Word has length 65 [2022-07-21 08:07:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:30,168 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 871 transitions. [2022-07-21 08:07:30,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 871 transitions. [2022-07-21 08:07:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:30,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:30,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:30,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:07:30,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash -713270806, now seen corresponding path program 1 times [2022-07-21 08:07:30,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008019723] [2022-07-21 08:07:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008019723] [2022-07-21 08:07:30,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008019723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172060376] [2022-07-21 08:07:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:30,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:30,328 INFO L87 Difference]: Start difference. First operand 576 states and 871 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:31,346 INFO L93 Difference]: Finished difference Result 923 states and 1348 transitions. [2022-07-21 08:07:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:07:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:31,352 INFO L225 Difference]: With dead ends: 923 [2022-07-21 08:07:31,352 INFO L226 Difference]: Without dead ends: 746 [2022-07-21 08:07:31,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:07:31,354 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 1861 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:31,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 2362 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-21 08:07:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 672. [2022-07-21 08:07:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 575 states have (on average 1.5095652173913043) internal successors, (868), 584 states have internal predecessors, (868), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-21 08:07:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1005 transitions. [2022-07-21 08:07:31,402 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1005 transitions. Word has length 65 [2022-07-21 08:07:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:31,402 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1005 transitions. [2022-07-21 08:07:31,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1005 transitions. [2022-07-21 08:07:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:31,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:31,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:31,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:07:31,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1553110380, now seen corresponding path program 1 times [2022-07-21 08:07:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:31,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282967700] [2022-07-21 08:07:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282967700] [2022-07-21 08:07:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282967700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:31,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:31,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245905770] [2022-07-21 08:07:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:31,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:31,492 INFO L87 Difference]: Start difference. First operand 672 states and 1005 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:32,449 INFO L93 Difference]: Finished difference Result 973 states and 1419 transitions. [2022-07-21 08:07:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:32,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:07:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:32,453 INFO L225 Difference]: With dead ends: 973 [2022-07-21 08:07:32,453 INFO L226 Difference]: Without dead ends: 706 [2022-07-21 08:07:32,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:32,454 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 971 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:32,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2902 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:32,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-07-21 08:07:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 677. [2022-07-21 08:07:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 579 states have (on average 1.5025906735751295) internal successors, (870), 588 states have internal predecessors, (870), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-07-21 08:07:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1008 transitions. [2022-07-21 08:07:32,475 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1008 transitions. Word has length 65 [2022-07-21 08:07:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1008 transitions. [2022-07-21 08:07:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1008 transitions. [2022-07-21 08:07:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:32,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:32,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:07:32,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:32,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash 523751082, now seen corresponding path program 1 times [2022-07-21 08:07:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:32,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62014050] [2022-07-21 08:07:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:32,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:32,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62014050] [2022-07-21 08:07:32,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62014050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:32,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:32,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:07:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775983007] [2022-07-21 08:07:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:07:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:07:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:32,574 INFO L87 Difference]: Start difference. First operand 677 states and 1008 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:07:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:34,059 INFO L93 Difference]: Finished difference Result 1999 states and 2804 transitions. [2022-07-21 08:07:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:07:34,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-21 08:07:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:34,065 INFO L225 Difference]: With dead ends: 1999 [2022-07-21 08:07:34,065 INFO L226 Difference]: Without dead ends: 1709 [2022-07-21 08:07:34,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:07:34,067 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 3634 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:34,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3648 Valid, 3023 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:07:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-07-21 08:07:34,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1578. [2022-07-21 08:07:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1294 states have (on average 1.3979907264296754) internal successors, (1809), 1318 states have internal predecessors, (1809), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-07-21 08:07:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2149 transitions. [2022-07-21 08:07:34,115 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2149 transitions. Word has length 65 [2022-07-21 08:07:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:34,115 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2149 transitions. [2022-07-21 08:07:34,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:07:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2149 transitions. [2022-07-21 08:07:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:34,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:34,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:07:34,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 116960512, now seen corresponding path program 1 times [2022-07-21 08:07:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:34,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874275685] [2022-07-21 08:07:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:34,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874275685] [2022-07-21 08:07:34,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874275685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:34,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:34,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:34,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933359314] [2022-07-21 08:07:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:34,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:34,205 INFO L87 Difference]: Start difference. First operand 1578 states and 2149 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:35,149 INFO L93 Difference]: Finished difference Result 2869 states and 3822 transitions. [2022-07-21 08:07:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:35,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:07:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:35,154 INFO L225 Difference]: With dead ends: 2869 [2022-07-21 08:07:35,154 INFO L226 Difference]: Without dead ends: 1684 [2022-07-21 08:07:35,156 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 [2022-07-21 08:07:35,157 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 652 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:35,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 3232 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-07-21 08:07:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1608. [2022-07-21 08:07:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1318 states have (on average 1.3846737481031866) internal successors, (1825), 1342 states have internal predecessors, (1825), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-07-21 08:07:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2171 transitions. [2022-07-21 08:07:35,200 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2171 transitions. Word has length 65 [2022-07-21 08:07:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:35,200 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2171 transitions. [2022-07-21 08:07:35,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2171 transitions. [2022-07-21 08:07:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:35,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:35,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:35,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:07:35,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:35,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1503163906, now seen corresponding path program 1 times [2022-07-21 08:07:35,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:35,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797621229] [2022-07-21 08:07:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:35,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:35,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797621229] [2022-07-21 08:07:35,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797621229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:35,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:35,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:35,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474179404] [2022-07-21 08:07:35,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:35,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:35,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:35,300 INFO L87 Difference]: Start difference. First operand 1608 states and 2171 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:36,186 INFO L93 Difference]: Finished difference Result 2863 states and 3718 transitions. [2022-07-21 08:07:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:07:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:36,192 INFO L225 Difference]: With dead ends: 2863 [2022-07-21 08:07:36,192 INFO L226 Difference]: Without dead ends: 1871 [2022-07-21 08:07:36,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:07:36,194 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 1447 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:36,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2489 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2022-07-21 08:07:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1550. [2022-07-21 08:07:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1276 states have (on average 1.3824451410658307) internal successors, (1764), 1295 states have internal predecessors, (1764), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-07-21 08:07:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2089 transitions. [2022-07-21 08:07:36,239 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2089 transitions. Word has length 65 [2022-07-21 08:07:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:36,239 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2089 transitions. [2022-07-21 08:07:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2089 transitions. [2022-07-21 08:07:36,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:36,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:36,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:07:36,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1369150400, now seen corresponding path program 1 times [2022-07-21 08:07:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164734457] [2022-07-21 08:07:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:36,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164734457] [2022-07-21 08:07:36,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164734457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:36,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:36,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679783769] [2022-07-21 08:07:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:36,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:36,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:36,290 INFO L87 Difference]: Start difference. First operand 1550 states and 2089 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:36,753 INFO L93 Difference]: Finished difference Result 3889 states and 5050 transitions. [2022-07-21 08:07:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:07:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:36,762 INFO L225 Difference]: With dead ends: 3889 [2022-07-21 08:07:36,762 INFO L226 Difference]: Without dead ends: 2733 [2022-07-21 08:07:36,764 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 [2022-07-21 08:07:36,765 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1414 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:36,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2099 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-07-21 08:07:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2613. [2022-07-21 08:07:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2096 states have (on average 1.3148854961832062) internal successors, (2756), 2132 states have internal predecessors, (2756), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-07-21 08:07:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3391 transitions. [2022-07-21 08:07:36,846 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3391 transitions. Word has length 65 [2022-07-21 08:07:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:36,846 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3391 transitions. [2022-07-21 08:07:36,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:07:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3391 transitions. [2022-07-21 08:07:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:07:36,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:36,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:36,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:07:36,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 176493782, now seen corresponding path program 1 times [2022-07-21 08:07:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452747152] [2022-07-21 08:07:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:36,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:36,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452747152] [2022-07-21 08:07:36,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452747152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:36,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:36,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:36,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422797131] [2022-07-21 08:07:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:36,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:36,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:36,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:36,939 INFO L87 Difference]: Start difference. First operand 2613 states and 3391 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:37,531 INFO L93 Difference]: Finished difference Result 5929 states and 7536 transitions. [2022-07-21 08:07:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-21 08:07:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:37,542 INFO L225 Difference]: With dead ends: 5929 [2022-07-21 08:07:37,542 INFO L226 Difference]: Without dead ends: 3715 [2022-07-21 08:07:37,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:37,546 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1187 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:37,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1751 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:07:37,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-07-21 08:07:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3447. [2022-07-21 08:07:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2744 states have (on average 1.2940962099125364) internal successors, (3551), 2785 states have internal predecessors, (3551), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-07-21 08:07:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4392 transitions. [2022-07-21 08:07:37,646 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4392 transitions. Word has length 66 [2022-07-21 08:07:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:37,647 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 4392 transitions. [2022-07-21 08:07:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4392 transitions. [2022-07-21 08:07:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 08:07:37,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:37,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:37,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:07:37,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash 138145877, now seen corresponding path program 1 times [2022-07-21 08:07:37,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:37,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823614457] [2022-07-21 08:07:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:37,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:37,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823614457] [2022-07-21 08:07:37,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823614457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:37,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:37,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442516569] [2022-07-21 08:07:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:37,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:37,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:37,705 INFO L87 Difference]: Start difference. First operand 3447 states and 4392 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:38,085 INFO L93 Difference]: Finished difference Result 7319 states and 9166 transitions. [2022-07-21 08:07:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 08:07:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:38,099 INFO L225 Difference]: With dead ends: 7319 [2022-07-21 08:07:38,100 INFO L226 Difference]: Without dead ends: 4269 [2022-07-21 08:07:38,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:38,106 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1737 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:38,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1771 Valid, 1484 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:38,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-07-21 08:07:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4001. [2022-07-21 08:07:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3184 states have (on average 1.2848618090452262) internal successors, (4091), 3229 states have internal predecessors, (4091), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-07-21 08:07:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5061 transitions. [2022-07-21 08:07:38,252 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5061 transitions. Word has length 72 [2022-07-21 08:07:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 5061 transitions. [2022-07-21 08:07:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:07:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5061 transitions. [2022-07-21 08:07:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:07:38,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:38,255 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:07:38,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:38,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash -529402658, now seen corresponding path program 1 times [2022-07-21 08:07:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:38,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970413619] [2022-07-21 08:07:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:38,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:38,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970413619] [2022-07-21 08:07:38,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970413619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:38,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:38,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604242877] [2022-07-21 08:07:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:38,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:38,318 INFO L87 Difference]: Start difference. First operand 4001 states and 5061 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:07:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:38,822 INFO L93 Difference]: Finished difference Result 5087 states and 6356 transitions. [2022-07-21 08:07:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-21 08:07:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:38,838 INFO L225 Difference]: With dead ends: 5087 [2022-07-21 08:07:38,838 INFO L226 Difference]: Without dead ends: 5084 [2022-07-21 08:07:38,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:07:38,840 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 2436 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:38,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 1462 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2022-07-21 08:07:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4463. [2022-07-21 08:07:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3539 states have (on average 1.2735235942356598) internal successors, (4507), 3587 states have internal predecessors, (4507), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-07-21 08:07:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 5604 transitions. [2022-07-21 08:07:39,066 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 5604 transitions. Word has length 73 [2022-07-21 08:07:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:39,067 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 5604 transitions. [2022-07-21 08:07:39,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:07:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 5604 transitions. [2022-07-21 08:07:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:07:39,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:39,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:39,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:07:39,069 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash 766925247, now seen corresponding path program 1 times [2022-07-21 08:07:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:39,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930908803] [2022-07-21 08:07:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:39,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:39,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:39,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930908803] [2022-07-21 08:07:39,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930908803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:39,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303378363] [2022-07-21 08:07:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:39,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:39,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:39,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:07:39,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:07:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:39,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:07:39,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:39,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:07:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:39,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303378363] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:07:39,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:07:39,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:07:39,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90495153] [2022-07-21 08:07:39,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:07:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:07:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:07:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:39,757 INFO L87 Difference]: Start difference. First operand 4463 states and 5604 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:07:41,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:41,416 INFO L93 Difference]: Finished difference Result 8781 states and 10813 transitions. [2022-07-21 08:07:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 08:07:41,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-21 08:07:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:41,441 INFO L225 Difference]: With dead ends: 8781 [2022-07-21 08:07:41,441 INFO L226 Difference]: Without dead ends: 8778 [2022-07-21 08:07:41,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-21 08:07:41,444 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1894 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:41,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 3312 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:07:41,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2022-07-21 08:07:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 7880. [2022-07-21 08:07:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 6214 states have (on average 1.2536208561313165) internal successors, (7790), 6297 states have internal predecessors, (7790), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-07-21 08:07:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 9747 transitions. [2022-07-21 08:07:41,862 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 9747 transitions. Word has length 74 [2022-07-21 08:07:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:41,862 INFO L495 AbstractCegarLoop]: Abstraction has 7880 states and 9747 transitions. [2022-07-21 08:07:41,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:07:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 9747 transitions. [2022-07-21 08:07:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:07:41,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:41,864 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:41,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 08:07:42,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:42,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:42,082 INFO L85 PathProgramCache]: Analyzing trace with hash 889380766, now seen corresponding path program 2 times [2022-07-21 08:07:42,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:42,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989139906] [2022-07-21 08:07:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:42,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989139906] [2022-07-21 08:07:42,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989139906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:42,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:42,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042406151] [2022-07-21 08:07:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:42,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:42,138 INFO L87 Difference]: Start difference. First operand 7880 states and 9747 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:07:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:42,594 INFO L93 Difference]: Finished difference Result 10474 states and 12956 transitions. [2022-07-21 08:07:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:07:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-21 08:07:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:42,610 INFO L225 Difference]: With dead ends: 10474 [2022-07-21 08:07:42,622 INFO L226 Difference]: Without dead ends: 4300 [2022-07-21 08:07:42,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:42,633 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1640 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:42,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 1531 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-07-21 08:07:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 3292. [2022-07-21 08:07:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 2632 states have (on average 1.2693768996960486) internal successors, (3341), 2661 states have internal predecessors, (3341), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-07-21 08:07:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4116 transitions. [2022-07-21 08:07:42,782 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4116 transitions. Word has length 77 [2022-07-21 08:07:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 3292 states and 4116 transitions. [2022-07-21 08:07:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:07:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4116 transitions. [2022-07-21 08:07:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:07:42,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:42,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:07:42,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1748274255, now seen corresponding path program 1 times [2022-07-21 08:07:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:42,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375528604] [2022-07-21 08:07:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:07:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375528604] [2022-07-21 08:07:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375528604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:42,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:42,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:42,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850595110] [2022-07-21 08:07:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:42,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:42,846 INFO L87 Difference]: Start difference. First operand 3292 states and 4116 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:07:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:44,002 INFO L93 Difference]: Finished difference Result 9076 states and 11113 transitions. [2022-07-21 08:07:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:07:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-21 08:07:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:44,014 INFO L225 Difference]: With dead ends: 9076 [2022-07-21 08:07:44,014 INFO L226 Difference]: Without dead ends: 5378 [2022-07-21 08:07:44,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:07:44,019 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1885 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:44,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 2228 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-07-21 08:07:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5118. [2022-07-21 08:07:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 4023 states have (on average 1.230673626646781) internal successors, (4951), 4089 states have internal predecessors, (4951), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-07-21 08:07:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 6276 transitions. [2022-07-21 08:07:44,188 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 6276 transitions. Word has length 84 [2022-07-21 08:07:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:44,189 INFO L495 AbstractCegarLoop]: Abstraction has 5118 states and 6276 transitions. [2022-07-21 08:07:44,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:07:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 6276 transitions. [2022-07-21 08:07:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:07:44,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:44,193 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:07:44,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1535694468, now seen corresponding path program 1 times [2022-07-21 08:07:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:44,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066871430] [2022-07-21 08:07:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:44,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:07:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:07:44,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:44,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066871430] [2022-07-21 08:07:44,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066871430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:44,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:44,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121642472] [2022-07-21 08:07:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:44,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:44,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:44,285 INFO L87 Difference]: Start difference. First operand 5118 states and 6276 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:07:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:45,415 INFO L93 Difference]: Finished difference Result 8478 states and 10294 transitions. [2022-07-21 08:07:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:07:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-21 08:07:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:45,425 INFO L225 Difference]: With dead ends: 8478 [2022-07-21 08:07:45,425 INFO L226 Difference]: Without dead ends: 4279 [2022-07-21 08:07:45,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:07:45,431 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2382 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:45,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 2596 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-07-21 08:07:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 3858. [2022-07-21 08:07:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3029 states have (on average 1.2231759656652361) internal successors, (3705), 3083 states have internal predecessors, (3705), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-07-21 08:07:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 4664 transitions. [2022-07-21 08:07:45,606 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 4664 transitions. Word has length 93 [2022-07-21 08:07:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:45,606 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 4664 transitions. [2022-07-21 08:07:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:07:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 4664 transitions. [2022-07-21 08:07:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:45,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:45,610 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] [2022-07-21 08:07:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:07:45,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1225012879, now seen corresponding path program 1 times [2022-07-21 08:07:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282607438] [2022-07-21 08:07:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:07:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:07:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:07:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 08:07:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 08:07:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:07:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:45,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282607438] [2022-07-21 08:07:45,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282607438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:45,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168869498] [2022-07-21 08:07:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:45,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:45,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:45,731 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) [2022-07-21 08:07:45,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:07:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 08:07:45,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:07:45,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:07:45,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168869498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:45,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:07:45,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-21 08:07:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064603821] [2022-07-21 08:07:45,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:45,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:45,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:45,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:07:45,912 INFO L87 Difference]: Start difference. First operand 3858 states and 4664 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) [2022-07-21 08:07:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:46,057 INFO L93 Difference]: Finished difference Result 5733 states and 6903 transitions. [2022-07-21 08:07:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:46,058 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 [2022-07-21 08:07:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:46,064 INFO L225 Difference]: With dead ends: 5733 [2022-07-21 08:07:46,064 INFO L226 Difference]: Without dead ends: 2274 [2022-07-21 08:07:46,071 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 [2022-07-21 08:07:46,071 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 34 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3640 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 [2022-07-21 08:07:46,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3640 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:07:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-07-21 08:07:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2152. [2022-07-21 08:07:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1769 states have (on average 1.2521198417184851) internal successors, (2215), 1786 states have internal predecessors, (2215), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-07-21 08:07:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2670 transitions. [2022-07-21 08:07:46,186 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2670 transitions. Word has length 145 [2022-07-21 08:07:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:46,187 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 2670 transitions. [2022-07-21 08:07:46,187 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) [2022-07-21 08:07:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2670 transitions. [2022-07-21 08:07:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 08:07:46,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:46,190 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:46,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:46,408 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,SelfDestructingSolverStorable14 [2022-07-21 08:07:46,408 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -732374681, now seen corresponding path program 1 times [2022-07-21 08:07:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:46,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492482414] [2022-07-21 08:07:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:46,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 08:07:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 08:07:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 08:07:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 08:07:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 08:07:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 08:07:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 08:07:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:46,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492482414] [2022-07-21 08:07:46,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492482414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:46,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:46,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50472137] [2022-07-21 08:07:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:46,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:46,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:46,472 INFO L87 Difference]: Start difference. First operand 2152 states and 2670 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 08:07:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:47,046 INFO L93 Difference]: Finished difference Result 2200 states and 2720 transitions. [2022-07-21 08:07:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-21 08:07:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:47,050 INFO L225 Difference]: With dead ends: 2200 [2022-07-21 08:07:47,050 INFO L226 Difference]: Without dead ends: 1826 [2022-07-21 08:07:47,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:47,051 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1068 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:47,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1685 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:07:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2022-07-21 08:07:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1781. [2022-07-21 08:07:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1482 states have (on average 1.2746288798920378) internal successors, (1889), 1496 states have internal predecessors, (1889), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-07-21 08:07:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2248 transitions. [2022-07-21 08:07:47,127 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2248 transitions. Word has length 147 [2022-07-21 08:07:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:47,127 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2248 transitions. [2022-07-21 08:07:47,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 08:07:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2248 transitions. [2022-07-21 08:07:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 08:07:47,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:47,130 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] [2022-07-21 08:07:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:07:47,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash -256970733, now seen corresponding path program 1 times [2022-07-21 08:07:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:47,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562753292] [2022-07-21 08:07:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:07:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:07:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 08:07:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 08:07:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 08:07:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 08:07:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 08:07:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:47,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562753292] [2022-07-21 08:07:47,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562753292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:47,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:47,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240075415] [2022-07-21 08:07:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:47,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:47,223 INFO L87 Difference]: Start difference. First operand 1781 states and 2248 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) [2022-07-21 08:07:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:47,877 INFO L93 Difference]: Finished difference Result 3047 states and 3747 transitions. [2022-07-21 08:07:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:07:47,877 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 [2022-07-21 08:07:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:47,883 INFO L225 Difference]: With dead ends: 3047 [2022-07-21 08:07:47,883 INFO L226 Difference]: Without dead ends: 1754 [2022-07-21 08:07:47,887 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 [2022-07-21 08:07:47,887 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 681 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:47,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2525 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:07:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-07-21 08:07:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1670. [2022-07-21 08:07:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1395 states have (on average 1.2845878136200717) internal successors, (1792), 1409 states have internal predecessors, (1792), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-07-21 08:07:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2121 transitions. [2022-07-21 08:07:47,955 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2121 transitions. Word has length 159 [2022-07-21 08:07:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:47,955 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2121 transitions. [2022-07-21 08:07:47,956 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) [2022-07-21 08:07:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2121 transitions. [2022-07-21 08:07:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 08:07:47,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:47,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:07:47,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1070811765, now seen corresponding path program 1 times [2022-07-21 08:07:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:47,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883508003] [2022-07-21 08:07:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:07:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:07:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 08:07:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 08:07:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 08:07:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 08:07:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:07:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 08:07:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883508003] [2022-07-21 08:07:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883508003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682490378] [2022-07-21 08:07:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:48,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:48,039 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) [2022-07-21 08:07:48,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:07:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:48,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 08:07:48,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 08:07:48,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:07:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 08:07:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682490378] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:07:48,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:07:48,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-21 08:07:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781966617] [2022-07-21 08:07:48,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:07:48,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:07:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:48,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:07:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:07:48,528 INFO L87 Difference]: Start difference. First operand 1670 states and 2121 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-21 08:07:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:49,592 INFO L93 Difference]: Finished difference Result 3406 states and 4260 transitions. [2022-07-21 08:07:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:07:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-21 08:07:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:49,600 INFO L225 Difference]: With dead ends: 3406 [2022-07-21 08:07:49,600 INFO L226 Difference]: Without dead ends: 2061 [2022-07-21 08:07:49,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-21 08:07:49,602 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2218 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 2420 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2022-07-21 08:07:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1948. [2022-07-21 08:07:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2484355444305382) internal successors, (1995), 1613 states have internal predecessors, (1995), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-21 08:07:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2433 transitions. [2022-07-21 08:07:49,695 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2433 transitions. Word has length 162 [2022-07-21 08:07:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:49,695 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2433 transitions. [2022-07-21 08:07:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-21 08:07:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2433 transitions. [2022-07-21 08:07:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:07:49,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:49,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:49,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 08:07:49,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1451778894, now seen corresponding path program 1 times [2022-07-21 08:07:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:49,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378069250] [2022-07-21 08:07:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:07:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:07:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:07:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:07:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:50,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378069250] [2022-07-21 08:07:50,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378069250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:50,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:50,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:07:50,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29263313] [2022-07-21 08:07:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:50,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:07:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:07:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:07:50,025 INFO L87 Difference]: Start difference. First operand 1948 states and 2433 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:51,192 INFO L93 Difference]: Finished difference Result 2465 states and 3271 transitions. [2022-07-21 08:07:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:07:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:51,199 INFO L225 Difference]: With dead ends: 2465 [2022-07-21 08:07:51,199 INFO L226 Difference]: Without dead ends: 2090 [2022-07-21 08:07:51,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:51,212 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1143 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:51,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1368 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:07:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-07-21 08:07:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1948. [2022-07-21 08:07:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2478097622027535) internal successors, (1994), 1613 states have internal predecessors, (1994), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-21 08:07:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2432 transitions. [2022-07-21 08:07:51,330 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2432 transitions. Word has length 179 [2022-07-21 08:07:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:51,330 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2432 transitions. [2022-07-21 08:07:51,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2432 transitions. [2022-07-21 08:07:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:07:51,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:51,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:07:51,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2141610384, now seen corresponding path program 1 times [2022-07-21 08:07:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:51,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545235384] [2022-07-21 08:07:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:07:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:07:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:07:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:07:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:51,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545235384] [2022-07-21 08:07:51,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545235384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:51,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:51,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:07:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039470826] [2022-07-21 08:07:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:51,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:07:51,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:07:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:07:51,483 INFO L87 Difference]: Start difference. First operand 1948 states and 2432 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:52,852 INFO L93 Difference]: Finished difference Result 2457 states and 3254 transitions. [2022-07-21 08:07:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:07:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:52,857 INFO L225 Difference]: With dead ends: 2457 [2022-07-21 08:07:52,857 INFO L226 Difference]: Without dead ends: 2090 [2022-07-21 08:07:52,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:52,858 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1134 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:52,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1366 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:07:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-07-21 08:07:52,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1948. [2022-07-21 08:07:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2471839799749687) internal successors, (1993), 1613 states have internal predecessors, (1993), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-21 08:07:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2431 transitions. [2022-07-21 08:07:52,973 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2431 transitions. Word has length 179 [2022-07-21 08:07:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:52,973 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2431 transitions. [2022-07-21 08:07:52,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2431 transitions. [2022-07-21 08:07:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:07:52,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:52,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:52,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:07:52,976 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1367359022, now seen corresponding path program 1 times [2022-07-21 08:07:52,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:52,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593653826] [2022-07-21 08:07:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:07:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:07:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:07:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:07:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:53,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593653826] [2022-07-21 08:07:53,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593653826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:53,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:53,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515433291] [2022-07-21 08:07:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:53,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:53,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:53,080 INFO L87 Difference]: Start difference. First operand 1948 states and 2431 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:55,719 INFO L93 Difference]: Finished difference Result 2978 states and 4102 transitions. [2022-07-21 08:07:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:07:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:55,724 INFO L225 Difference]: With dead ends: 2978 [2022-07-21 08:07:55,724 INFO L226 Difference]: Without dead ends: 2614 [2022-07-21 08:07:55,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:55,726 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1786 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:55,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 1969 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 08:07:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2022-07-21 08:07:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2329. [2022-07-21 08:07:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1951 states have (on average 1.3116350589441312) internal successors, (2559), 1967 states have internal predecessors, (2559), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-07-21 08:07:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3042 transitions. [2022-07-21 08:07:55,842 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3042 transitions. Word has length 179 [2022-07-21 08:07:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:55,843 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 3042 transitions. [2022-07-21 08:07:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3042 transitions. [2022-07-21 08:07:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:07:55,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:55,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:07:55,845 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1541868494, now seen corresponding path program 1 times [2022-07-21 08:07:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711971454] [2022-07-21 08:07:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:07:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:07:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:07:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:07:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:55,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711971454] [2022-07-21 08:07:55,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711971454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:55,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:55,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296997734] [2022-07-21 08:07:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:55,980 INFO L87 Difference]: Start difference. First operand 2329 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:58,416 INFO L93 Difference]: Finished difference Result 3903 states and 5602 transitions. [2022-07-21 08:07:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:07:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:58,426 INFO L225 Difference]: With dead ends: 3903 [2022-07-21 08:07:58,426 INFO L226 Difference]: Without dead ends: 3158 [2022-07-21 08:07:58,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:58,430 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1817 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:58,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3302 Invalid, 3447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:07:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2022-07-21 08:07:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2684. [2022-07-21 08:07:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3489903424056189) internal successors, (3073), 2295 states have internal predecessors, (3073), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-21 08:07:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3600 transitions. [2022-07-21 08:07:58,657 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3600 transitions. Word has length 179 [2022-07-21 08:07:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:58,657 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3600 transitions. [2022-07-21 08:07:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3600 transitions. [2022-07-21 08:07:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:07:58,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:58,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:58,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:07:58,660 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash 930599436, now seen corresponding path program 1 times [2022-07-21 08:07:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585672278] [2022-07-21 08:07:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:07:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:07:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:07:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:07:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:58,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585672278] [2022-07-21 08:07:58,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585672278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:58,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:58,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945565341] [2022-07-21 08:07:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:58,794 INFO L87 Difference]: Start difference. First operand 2684 states and 3600 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:00,036 INFO L93 Difference]: Finished difference Result 4274 states and 6198 transitions. [2022-07-21 08:08:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:00,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:00,044 INFO L225 Difference]: With dead ends: 4274 [2022-07-21 08:08:00,044 INFO L226 Difference]: Without dead ends: 3174 [2022-07-21 08:08:00,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:00,048 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1565 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:00,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1690 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:08:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-07-21 08:08:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2684. [2022-07-21 08:08:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3476733977172959) internal successors, (3070), 2295 states have internal predecessors, (3070), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-21 08:08:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3597 transitions. [2022-07-21 08:08:00,268 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3597 transitions. Word has length 179 [2022-07-21 08:08:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:00,269 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3597 transitions. [2022-07-21 08:08:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3597 transitions. [2022-07-21 08:08:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:00,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:00,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:08:00,271 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -474592242, now seen corresponding path program 1 times [2022-07-21 08:08:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:00,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727913985] [2022-07-21 08:08:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727913985] [2022-07-21 08:08:00,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727913985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:00,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:00,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:00,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434198315] [2022-07-21 08:08:00,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:00,374 INFO L87 Difference]: Start difference. First operand 2684 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:01,763 INFO L93 Difference]: Finished difference Result 4270 states and 6181 transitions. [2022-07-21 08:08:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:01,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:01,769 INFO L225 Difference]: With dead ends: 4270 [2022-07-21 08:08:01,769 INFO L226 Difference]: Without dead ends: 3170 [2022-07-21 08:08:01,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:01,773 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1563 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:01,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1686 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-07-21 08:08:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2684. [2022-07-21 08:08:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3463564530289729) internal successors, (3067), 2295 states have internal predecessors, (3067), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-21 08:08:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3594 transitions. [2022-07-21 08:08:01,996 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3594 transitions. Word has length 179 [2022-07-21 08:08:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:01,997 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3594 transitions. [2022-07-21 08:08:01,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3594 transitions. [2022-07-21 08:08:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:01,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:01,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:01,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:08:02,000 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1419741644, now seen corresponding path program 1 times [2022-07-21 08:08:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:02,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452067696] [2022-07-21 08:08:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:02,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452067696] [2022-07-21 08:08:02,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452067696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:02,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:02,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394732385] [2022-07-21 08:08:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:02,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:02,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:02,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:02,108 INFO L87 Difference]: Start difference. First operand 2684 states and 3594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:04,747 INFO L93 Difference]: Finished difference Result 5257 states and 7744 transitions. [2022-07-21 08:08:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:08:04,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:04,755 INFO L225 Difference]: With dead ends: 5257 [2022-07-21 08:08:04,755 INFO L226 Difference]: Without dead ends: 4157 [2022-07-21 08:08:04,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:08:04,758 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1799 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:04,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 3283 Invalid, 3390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 08:08:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2022-07-21 08:08:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3403. [2022-07-21 08:08:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2941 states have (on average 1.3954437266235975) internal successors, (4104), 2960 states have internal predecessors, (4104), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-21 08:08:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4723 transitions. [2022-07-21 08:08:04,967 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4723 transitions. Word has length 179 [2022-07-21 08:08:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:04,968 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 4723 transitions. [2022-07-21 08:08:04,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4723 transitions. [2022-07-21 08:08:04,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:04,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:04,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:08:04,970 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1428644786, now seen corresponding path program 1 times [2022-07-21 08:08:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323554783] [2022-07-21 08:08:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:05,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323554783] [2022-07-21 08:08:05,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323554783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:05,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:05,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797386714] [2022-07-21 08:08:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:05,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:05,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:05,081 INFO L87 Difference]: Start difference. First operand 3403 states and 4723 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:06,656 INFO L93 Difference]: Finished difference Result 5962 states and 8860 transitions. [2022-07-21 08:08:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:06,664 INFO L225 Difference]: With dead ends: 5962 [2022-07-21 08:08:06,664 INFO L226 Difference]: Without dead ends: 4143 [2022-07-21 08:08:06,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:06,668 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1344 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:06,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1933 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:06,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-07-21 08:08:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3403. [2022-07-21 08:08:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2941 states have (on average 1.393743624617477) internal successors, (4099), 2960 states have internal predecessors, (4099), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-21 08:08:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4718 transitions. [2022-07-21 08:08:06,881 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4718 transitions. Word has length 179 [2022-07-21 08:08:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:06,881 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 4718 transitions. [2022-07-21 08:08:06,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4718 transitions. [2022-07-21 08:08:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:06,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:06,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:08:06,884 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1943155084, now seen corresponding path program 1 times [2022-07-21 08:08:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629979421] [2022-07-21 08:08:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:06,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:06,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629979421] [2022-07-21 08:08:06,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629979421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:06,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:06,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300919329] [2022-07-21 08:08:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:06,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:06,994 INFO L87 Difference]: Start difference. First operand 3403 states and 4718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:09,402 INFO L93 Difference]: Finished difference Result 7880 states and 11881 transitions. [2022-07-21 08:08:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:08:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:09,415 INFO L225 Difference]: With dead ends: 7880 [2022-07-21 08:08:09,415 INFO L226 Difference]: Without dead ends: 6061 [2022-07-21 08:08:09,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:08:09,419 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1890 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 2324 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:08:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2022-07-21 08:08:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4845. [2022-07-21 08:08:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.444860688363381) internal successors, (6171), 4294 states have internal predecessors, (6171), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-21 08:08:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6980 transitions. [2022-07-21 08:08:09,781 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6980 transitions. Word has length 179 [2022-07-21 08:08:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:09,781 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6980 transitions. [2022-07-21 08:08:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6980 transitions. [2022-07-21 08:08:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:09,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:09,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:09,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:08:09,784 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1965949810, now seen corresponding path program 1 times [2022-07-21 08:08:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:09,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579453714] [2022-07-21 08:08:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:09,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579453714] [2022-07-21 08:08:09,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579453714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:09,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:09,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257365634] [2022-07-21 08:08:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:09,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:09,906 INFO L87 Difference]: Start difference. First operand 4845 states and 6980 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:11,790 INFO L93 Difference]: Finished difference Result 9342 states and 14211 transitions. [2022-07-21 08:08:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:11,800 INFO L225 Difference]: With dead ends: 9342 [2022-07-21 08:08:11,800 INFO L226 Difference]: Without dead ends: 6081 [2022-07-21 08:08:11,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:11,808 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1345 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:11,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1924 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:08:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2022-07-21 08:08:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 4845. [2022-07-21 08:08:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.442753453523765) internal successors, (6162), 4294 states have internal predecessors, (6162), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-21 08:08:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6971 transitions. [2022-07-21 08:08:12,211 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6971 transitions. Word has length 179 [2022-07-21 08:08:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:12,212 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6971 transitions. [2022-07-21 08:08:12,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6971 transitions. [2022-07-21 08:08:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:12,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:12,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:08:12,215 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2064369996, now seen corresponding path program 1 times [2022-07-21 08:08:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44630532] [2022-07-21 08:08:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:12,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44630532] [2022-07-21 08:08:12,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44630532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:12,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:12,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844230810] [2022-07-21 08:08:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:12,308 INFO L87 Difference]: Start difference. First operand 4845 states and 6971 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:14,022 INFO L93 Difference]: Finished difference Result 9322 states and 14144 transitions. [2022-07-21 08:08:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:14,034 INFO L225 Difference]: With dead ends: 9322 [2022-07-21 08:08:14,034 INFO L226 Difference]: Without dead ends: 6061 [2022-07-21 08:08:14,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:14,039 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1560 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:14,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 1664 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:08:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2022-07-21 08:08:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4845. [2022-07-21 08:08:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.4406462186841489) internal successors, (6153), 4294 states have internal predecessors, (6153), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-21 08:08:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6962 transitions. [2022-07-21 08:08:14,387 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6962 transitions. Word has length 179 [2022-07-21 08:08:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:14,387 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6962 transitions. [2022-07-21 08:08:14,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6962 transitions. [2022-07-21 08:08:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:14,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:14,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:14,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:08:14,390 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash 741191050, now seen corresponding path program 1 times [2022-07-21 08:08:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:14,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406850063] [2022-07-21 08:08:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:14,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:14,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:14,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406850063] [2022-07-21 08:08:14,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406850063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:14,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:14,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945354662] [2022-07-21 08:08:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:14,515 INFO L87 Difference]: Start difference. First operand 4845 states and 6962 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:16,248 INFO L93 Difference]: Finished difference Result 9312 states and 14097 transitions. [2022-07-21 08:08:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:16,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:16,271 INFO L225 Difference]: With dead ends: 9312 [2022-07-21 08:08:16,272 INFO L226 Difference]: Without dead ends: 6051 [2022-07-21 08:08:16,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:16,279 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1340 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:16,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1914 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2022-07-21 08:08:16,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 4845. [2022-07-21 08:08:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.4385389838445328) internal successors, (6144), 4294 states have internal predecessors, (6144), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-21 08:08:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6953 transitions. [2022-07-21 08:08:16,650 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6953 transitions. Word has length 179 [2022-07-21 08:08:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:16,650 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6953 transitions. [2022-07-21 08:08:16,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6953 transitions. [2022-07-21 08:08:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:16,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:16,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:16,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:08:16,653 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:16,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1656796788, now seen corresponding path program 1 times [2022-07-21 08:08:16,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:16,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113313041] [2022-07-21 08:08:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113313041] [2022-07-21 08:08:16,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113313041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:16,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:16,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321959772] [2022-07-21 08:08:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:16,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:16,805 INFO L87 Difference]: Start difference. First operand 4845 states and 6953 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:20,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:20,005 INFO L93 Difference]: Finished difference Result 13096 states and 20005 transitions. [2022-07-21 08:08:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:08:20,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:20,024 INFO L225 Difference]: With dead ends: 13096 [2022-07-21 08:08:20,024 INFO L226 Difference]: Without dead ends: 9835 [2022-07-21 08:08:20,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:08:20,029 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 1768 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:20,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3243 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:08:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2022-07-21 08:08:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 7770. [2022-07-21 08:08:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 6972 states have (on average 1.4799196787148594) internal successors, (10318), 7003 states have internal predecessors, (10318), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-21 08:08:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 11525 transitions. [2022-07-21 08:08:20,698 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 11525 transitions. Word has length 179 [2022-07-21 08:08:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:20,698 INFO L495 AbstractCegarLoop]: Abstraction has 7770 states and 11525 transitions. [2022-07-21 08:08:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 11525 transitions. [2022-07-21 08:08:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:20,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:20,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 08:08:20,702 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1318509238, now seen corresponding path program 1 times [2022-07-21 08:08:20,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:20,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881633163] [2022-07-21 08:08:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:20,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881633163] [2022-07-21 08:08:20,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881633163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:20,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:20,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918039453] [2022-07-21 08:08:20,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:20,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:20,808 INFO L87 Difference]: Start difference. First operand 7770 states and 11525 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:23,031 INFO L93 Difference]: Finished difference Result 16078 states and 24764 transitions. [2022-07-21 08:08:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:23,050 INFO L225 Difference]: With dead ends: 16078 [2022-07-21 08:08:23,050 INFO L226 Difference]: Without dead ends: 9892 [2022-07-21 08:08:23,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:23,060 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1555 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:23,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1651 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:08:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2022-07-21 08:08:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 7770. [2022-07-21 08:08:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 6972 states have (on average 1.4774813539873781) internal successors, (10301), 7003 states have internal predecessors, (10301), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-21 08:08:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 11508 transitions. [2022-07-21 08:08:23,828 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 11508 transitions. Word has length 179 [2022-07-21 08:08:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:23,828 INFO L495 AbstractCegarLoop]: Abstraction has 7770 states and 11508 transitions. [2022-07-21 08:08:23,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 11508 transitions. [2022-07-21 08:08:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:23,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:23,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 08:08:23,832 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash -891954740, now seen corresponding path program 1 times [2022-07-21 08:08:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:23,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570671745] [2022-07-21 08:08:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:23,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:23,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570671745] [2022-07-21 08:08:23,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570671745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:23,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:23,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2670978] [2022-07-21 08:08:23,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:23,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:23,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:23,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:23,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:23,942 INFO L87 Difference]: Start difference. First operand 7770 states and 11508 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:29,626 INFO L93 Difference]: Finished difference Result 26233 states and 40561 transitions. [2022-07-21 08:08:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:29,674 INFO L225 Difference]: With dead ends: 26233 [2022-07-21 08:08:29,674 INFO L226 Difference]: Without dead ends: 20047 [2022-07-21 08:08:29,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:29,707 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 2206 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:29,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 3218 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3128 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 08:08:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20047 states. [2022-07-21 08:08:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20047 to 13436. [2022-07-21 08:08:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13436 states, 12206 states have (on average 1.5022939537932165) internal successors, (18337), 12253 states have internal predecessors, (18337), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-07-21 08:08:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13436 states to 13436 states and 20362 transitions. [2022-07-21 08:08:31,209 INFO L78 Accepts]: Start accepts. Automaton has 13436 states and 20362 transitions. Word has length 179 [2022-07-21 08:08:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:31,209 INFO L495 AbstractCegarLoop]: Abstraction has 13436 states and 20362 transitions. [2022-07-21 08:08:31,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13436 states and 20362 transitions. [2022-07-21 08:08:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:31,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:31,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 08:08:31,248 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1432384246, now seen corresponding path program 1 times [2022-07-21 08:08:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220609530] [2022-07-21 08:08:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:31,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220609530] [2022-07-21 08:08:31,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220609530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:31,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:31,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:31,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981705482] [2022-07-21 08:08:31,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:31,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:31,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:31,374 INFO L87 Difference]: Start difference. First operand 13436 states and 20362 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:40,023 INFO L93 Difference]: Finished difference Result 48857 states and 76185 transitions. [2022-07-21 08:08:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:40,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:40,126 INFO L225 Difference]: With dead ends: 48857 [2022-07-21 08:08:40,126 INFO L226 Difference]: Without dead ends: 37005 [2022-07-21 08:08:40,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:40,161 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1945 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:40,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2463 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 08:08:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37005 states. [2022-07-21 08:08:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37005 to 24909. [2022-07-21 08:08:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24909 states, 22831 states have (on average 1.5201699443738776) internal successors, (34707), 22910 states have internal predecessors, (34707), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-07-21 08:08:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24909 states to 24909 states and 38498 transitions. [2022-07-21 08:08:43,068 INFO L78 Accepts]: Start accepts. Automaton has 24909 states and 38498 transitions. Word has length 179 [2022-07-21 08:08:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:43,069 INFO L495 AbstractCegarLoop]: Abstraction has 24909 states and 38498 transitions. [2022-07-21 08:08:43,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 24909 states and 38498 transitions. [2022-07-21 08:08:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:08:43,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:43,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:43,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 08:08:43,129 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:43,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1588364788, now seen corresponding path program 1 times [2022-07-21 08:08:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:43,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126366298] [2022-07-21 08:08:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:08:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:08:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:08:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:08:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:43,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126366298] [2022-07-21 08:08:43,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126366298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:43,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:43,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912170851] [2022-07-21 08:08:43,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:43,260 INFO L87 Difference]: Start difference. First operand 24909 states and 38498 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:57,917 INFO L93 Difference]: Finished difference Result 93960 states and 147967 transitions. [2022-07-21 08:08:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:08:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:58,260 INFO L225 Difference]: With dead ends: 93960 [2022-07-21 08:08:58,261 INFO L226 Difference]: Without dead ends: 70635 [2022-07-21 08:08:58,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:58,312 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 2130 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:58,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 3210 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 08:08:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70635 states. [2022-07-21 08:09:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70635 to 47822. [2022-07-21 08:09:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47822 states, 44080 states have (on average 1.5307849364791288) internal successors, (67477), 44223 states have internal predecessors, (67477), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2022-07-21 08:09:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47822 states to 47822 states and 75222 transitions. [2022-07-21 08:09:04,218 INFO L78 Accepts]: Start accepts. Automaton has 47822 states and 75222 transitions. Word has length 179 [2022-07-21 08:09:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:04,218 INFO L495 AbstractCegarLoop]: Abstraction has 47822 states and 75222 transitions. [2022-07-21 08:09:04,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 47822 states and 75222 transitions. [2022-07-21 08:09:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:09:04,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:04,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:04,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 08:09:04,234 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1177754422, now seen corresponding path program 1 times [2022-07-21 08:09:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:04,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039426722] [2022-07-21 08:09:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:09:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:09:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:09:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:09:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:04,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039426722] [2022-07-21 08:09:04,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039426722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:04,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:04,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5907002] [2022-07-21 08:09:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:04,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:04,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:04,401 INFO L87 Difference]: Start difference. First operand 47822 states and 75222 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:32,571 INFO L93 Difference]: Finished difference Result 181061 states and 288769 transitions. [2022-07-21 08:09:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:09:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:09:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:33,113 INFO L225 Difference]: With dead ends: 181061 [2022-07-21 08:09:33,114 INFO L226 Difference]: Without dead ends: 134823 [2022-07-21 08:09:33,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:09:33,278 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1829 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:33,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3325 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 08:09:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134823 states. [2022-07-21 08:09:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134823 to 93712. [2022-07-21 08:09:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93712 states, 86706 states have (on average 1.5378059188522133) internal successors, (133337), 86977 states have internal predecessors, (133337), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2022-07-21 08:09:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93712 states to 93712 states and 150320 transitions. [2022-07-21 08:09:46,024 INFO L78 Accepts]: Start accepts. Automaton has 93712 states and 150320 transitions. Word has length 179 [2022-07-21 08:09:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:46,024 INFO L495 AbstractCegarLoop]: Abstraction has 93712 states and 150320 transitions. [2022-07-21 08:09:46,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 93712 states and 150320 transitions. [2022-07-21 08:09:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:09:46,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:46,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 08:09:46,060 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 981329672, now seen corresponding path program 1 times [2022-07-21 08:09:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209207860] [2022-07-21 08:09:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:09:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:09:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:09:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:09:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:46,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209207860] [2022-07-21 08:09:46,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209207860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:46,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:46,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573721706] [2022-07-21 08:09:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:46,211 INFO L87 Difference]: Start difference. First operand 93712 states and 150320 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:37,649 INFO L93 Difference]: Finished difference Result 354949 states and 575513 transitions. [2022-07-21 08:10:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:37,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-21 08:10:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:38,816 INFO L225 Difference]: With dead ends: 354949 [2022-07-21 08:10:38,817 INFO L226 Difference]: Without dead ends: 262821 [2022-07-21 08:10:39,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:39,091 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2007 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:39,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 3196 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:10:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262821 states.