./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/systemc/transmitter.15.cil.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 05397c7941b2acd95b1b6d02c6c64b476ab8b290a5b56301ff8db7ca1986067b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:25:00,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:25:00,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:25:00,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:25:00,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:25:00,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:25:00,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:25:00,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:25:00,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:25:00,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:25:00,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:25:00,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:25:00,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:25:00,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:25:00,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:25:00,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:25:00,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:25:00,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:25:00,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:25:00,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:25:00,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:25:00,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:25:00,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:25:00,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:25:00,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:25:00,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:25:00,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:25:00,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:25:00,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:25:00,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:25:00,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:25:00,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:25:00,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:25:00,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:25:00,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:25:00,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:25:00,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:25:00,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:25:00,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:25:00,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:25:00,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:25:00,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:25:00,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:25:00,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:25:00,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:25:00,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:25:00,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:25:00,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:25:00,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:25:00,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:25:00,869 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:25:00,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:25:00,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:25:00,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:25:00,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:25:00,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:25:00,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:25:00,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:25:00,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:25:00,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:25:00,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:25:00,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:25:00,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:25:00,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:25:00,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05397c7941b2acd95b1b6d02c6c64b476ab8b290a5b56301ff8db7ca1986067b [2021-12-21 13:25:01,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:25:01,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:25:01,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:25:01,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:25:01,082 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:25:01,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.15.cil.c [2021-12-21 13:25:01,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a758000fe/058a5af1cb9b4ab68486583109e96cc6/FLAGceafe4cec [2021-12-21 13:25:01,529 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:25:01,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.15.cil.c [2021-12-21 13:25:01,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a758000fe/058a5af1cb9b4ab68486583109e96cc6/FLAGceafe4cec [2021-12-21 13:25:01,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a758000fe/058a5af1cb9b4ab68486583109e96cc6 [2021-12-21 13:25:01,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:25:01,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:25:01,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:25:01,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:25:01,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:25:01,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46149e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01, skipping insertion in model container [2021-12-21 13:25:01,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:25:01,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:25:01,726 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/systemc/transmitter.15.cil.c[706,719] [2021-12-21 13:25:01,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:25:01,827 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:25:01,834 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/systemc/transmitter.15.cil.c[706,719] [2021-12-21 13:25:01,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:25:01,890 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:25:01,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01 WrapperNode [2021-12-21 13:25:01,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:25:01,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:25:01,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:25:01,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:25:01,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,937 INFO L137 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 891 [2021-12-21 13:25:01,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:25:01,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:25:01,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:25:01,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:25:01,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:25:01,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:25:01,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:25:01,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:25:01,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (1/1) ... [2021-12-21 13:25:01,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:25:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:25:02,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:25:02,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:25:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:25:02,074 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 13:25:02,074 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 13:25:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 13:25:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 13:25:02,075 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 13:25:02,075 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 13:25:02,076 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 13:25:02,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 13:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 13:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 13:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 13:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 13:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:25:02,213 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:25:02,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:25:02,722 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:25:02,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:25:02,736 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-21 13:25:02,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:25:02 BoogieIcfgContainer [2021-12-21 13:25:02,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:25:02,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:25:02,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:25:02,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:25:02,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:25:01" (1/3) ... [2021-12-21 13:25:02,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b332f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:25:02, skipping insertion in model container [2021-12-21 13:25:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:01" (2/3) ... [2021-12-21 13:25:02,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b332f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:25:02, skipping insertion in model container [2021-12-21 13:25:02,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:25:02" (3/3) ... [2021-12-21 13:25:02,745 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.15.cil.c [2021-12-21 13:25:02,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:25:02,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:25:02,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:25:02,799 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:25:02,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:25:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 368 states have (on average 1.6684782608695652) internal successors, (614), 370 states have internal predecessors, (614), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 13:25:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:02,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:02,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:02,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:02,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1951726257, now seen corresponding path program 1 times [2021-12-21 13:25:02,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:02,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286240311] [2021-12-21 13:25:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:02,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:03,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286240311] [2021-12-21 13:25:03,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286240311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:03,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:03,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:25:03,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672072075] [2021-12-21 13:25:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:03,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:25:03,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:25:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:25:03,231 INFO L87 Difference]: Start difference. First operand has 402 states, 368 states have (on average 1.6684782608695652) internal successors, (614), 370 states have internal predecessors, (614), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:04,640 INFO L93 Difference]: Finished difference Result 948 states and 1582 transitions. [2021-12-21 13:25:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:25:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:04,653 INFO L225 Difference]: With dead ends: 948 [2021-12-21 13:25:04,653 INFO L226 Difference]: Without dead ends: 548 [2021-12-21 13:25:04,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:25:04,660 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1094 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:04,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 1134 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:25:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-21 13:25:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 397. [2021-12-21 13:25:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 364 states have (on average 1.5741758241758241) internal successors, (573), 365 states have internal predecessors, (573), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 13:25:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 625 transitions. [2021-12-21 13:25:04,720 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 625 transitions. Word has length 184 [2021-12-21 13:25:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:04,721 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 625 transitions. [2021-12-21 13:25:04,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 625 transitions. [2021-12-21 13:25:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:04,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:04,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:25:04,725 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash 352577199, now seen corresponding path program 1 times [2021-12-21 13:25:04,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56734618] [2021-12-21 13:25:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:04,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:04,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:04,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56734618] [2021-12-21 13:25:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56734618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:04,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:04,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:25:04,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641006278] [2021-12-21 13:25:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:04,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:25:04,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:25:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:25:04,904 INFO L87 Difference]: Start difference. First operand 397 states and 625 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:05,995 INFO L93 Difference]: Finished difference Result 931 states and 1486 transitions. [2021-12-21 13:25:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:25:05,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:05,998 INFO L225 Difference]: With dead ends: 931 [2021-12-21 13:25:05,999 INFO L226 Difference]: Without dead ends: 548 [2021-12-21 13:25:06,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:25:06,001 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1081 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:06,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1120 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:25:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-21 13:25:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 397. [2021-12-21 13:25:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 364 states have (on average 1.5714285714285714) internal successors, (572), 365 states have internal predecessors, (572), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-21 13:25:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 624 transitions. [2021-12-21 13:25:06,084 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 624 transitions. Word has length 184 [2021-12-21 13:25:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:06,086 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 624 transitions. [2021-12-21 13:25:06,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 624 transitions. [2021-12-21 13:25:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:06,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:06,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:06,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:25:06,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 262516909, now seen corresponding path program 1 times [2021-12-21 13:25:06,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:06,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437923150] [2021-12-21 13:25:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:06,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:06,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:06,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437923150] [2021-12-21 13:25:06,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437923150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:06,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:06,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:25:06,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909975861] [2021-12-21 13:25:06,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:06,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:25:06,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:25:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:25:06,333 INFO L87 Difference]: Start difference. First operand 397 states and 624 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:08,234 INFO L93 Difference]: Finished difference Result 1470 states and 2375 transitions. [2021-12-21 13:25:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:25:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:08,240 INFO L225 Difference]: With dead ends: 1470 [2021-12-21 13:25:08,240 INFO L226 Difference]: Without dead ends: 1094 [2021-12-21 13:25:08,241 INFO L932 BasicCegarLoop]: 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 [2021-12-21 13:25:08,242 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1640 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:08,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 1798 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 13:25:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-12-21 13:25:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 793. [2021-12-21 13:25:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 732 states have (on average 1.5819672131147542) internal successors, (1158), 734 states have internal predecessors, (1158), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-21 13:25:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1255 transitions. [2021-12-21 13:25:08,297 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1255 transitions. Word has length 184 [2021-12-21 13:25:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:08,297 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1255 transitions. [2021-12-21 13:25:08,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1255 transitions. [2021-12-21 13:25:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:08,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:08,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:25:08,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1283386444, now seen corresponding path program 1 times [2021-12-21 13:25:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980743170] [2021-12-21 13:25:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:08,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980743170] [2021-12-21 13:25:08,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980743170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:08,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:08,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:08,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391831335] [2021-12-21 13:25:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:08,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:08,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:08,443 INFO L87 Difference]: Start difference. First operand 793 states and 1255 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:11,484 INFO L93 Difference]: Finished difference Result 2626 states and 4208 transitions. [2021-12-21 13:25:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:11,492 INFO L225 Difference]: With dead ends: 2626 [2021-12-21 13:25:11,493 INFO L226 Difference]: Without dead ends: 1854 [2021-12-21 13:25:11,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:11,502 INFO L933 BasicCegarLoop]: 1302 mSDtfsCounter, 1810 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 4046 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 4128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:11,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 3385 Invalid, 4128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4046 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 13:25:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-12-21 13:25:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1161. [2021-12-21 13:25:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1072 states have (on average 1.5746268656716418) internal successors, (1688), 1075 states have internal predecessors, (1688), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-21 13:25:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1829 transitions. [2021-12-21 13:25:11,574 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1829 transitions. Word has length 184 [2021-12-21 13:25:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:11,574 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1829 transitions. [2021-12-21 13:25:11,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1829 transitions. [2021-12-21 13:25:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:11,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:11,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:11,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:25:11,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 497388554, now seen corresponding path program 1 times [2021-12-21 13:25:11,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:11,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544603193] [2021-12-21 13:25:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:11,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:11,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:11,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544603193] [2021-12-21 13:25:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544603193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:11,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:11,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:11,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95379601] [2021-12-21 13:25:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:11,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:11,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:11,707 INFO L87 Difference]: Start difference. First operand 1161 states and 1829 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:15,147 INFO L93 Difference]: Finished difference Result 4047 states and 6476 transitions. [2021-12-21 13:25:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:15,158 INFO L225 Difference]: With dead ends: 4047 [2021-12-21 13:25:15,158 INFO L226 Difference]: Without dead ends: 2907 [2021-12-21 13:25:15,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:15,161 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1804 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:15,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 3369 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 13:25:15,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-12-21 13:25:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1901. [2021-12-21 13:25:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1756 states have (on average 1.5689066059225512) internal successors, (2755), 1761 states have internal predecessors, (2755), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-21 13:25:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2988 transitions. [2021-12-21 13:25:15,273 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2988 transitions. Word has length 184 [2021-12-21 13:25:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:15,273 INFO L470 AbstractCegarLoop]: Abstraction has 1901 states and 2988 transitions. [2021-12-21 13:25:15,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2988 transitions. [2021-12-21 13:25:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:15,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:15,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:15,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:25:15,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1697840312, now seen corresponding path program 1 times [2021-12-21 13:25:15,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:15,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627603539] [2021-12-21 13:25:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:15,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:15,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:15,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627603539] [2021-12-21 13:25:15,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627603539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:15,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:15,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:15,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862247214] [2021-12-21 13:25:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:15,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:15,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:15,422 INFO L87 Difference]: Start difference. First operand 1901 states and 2988 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:19,009 INFO L93 Difference]: Finished difference Result 6787 states and 10819 transitions. [2021-12-21 13:25:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:19,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:19,031 INFO L225 Difference]: With dead ends: 6787 [2021-12-21 13:25:19,031 INFO L226 Difference]: Without dead ends: 4907 [2021-12-21 13:25:19,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:19,036 INFO L933 BasicCegarLoop]: 1285 mSDtfsCounter, 1803 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:19,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 3364 Invalid, 4115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 13:25:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-12-21 13:25:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3382. [2021-12-21 13:25:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3125 states have (on average 1.56448) internal successors, (4889), 3134 states have internal predecessors, (4889), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-21 13:25:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 5312 transitions. [2021-12-21 13:25:19,318 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 5312 transitions. Word has length 184 [2021-12-21 13:25:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:19,319 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 5312 transitions. [2021-12-21 13:25:19,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 5312 transitions. [2021-12-21 13:25:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:19,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:19,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:19,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:25:19,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1353012150, now seen corresponding path program 1 times [2021-12-21 13:25:19,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58547379] [2021-12-21 13:25:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:19,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:19,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:19,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58547379] [2021-12-21 13:25:19,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58547379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:19,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:19,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:19,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627604424] [2021-12-21 13:25:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:19,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:19,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:19,434 INFO L87 Difference]: Start difference. First operand 3382 states and 5312 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:23,136 INFO L93 Difference]: Finished difference Result 12266 states and 19521 transitions. [2021-12-21 13:25:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:23,163 INFO L225 Difference]: With dead ends: 12266 [2021-12-21 13:25:23,163 INFO L226 Difference]: Without dead ends: 8905 [2021-12-21 13:25:23,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:23,171 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1802 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 4107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:23,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1821 Valid, 3359 Invalid, 4107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4023 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 13:25:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2021-12-21 13:25:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 6351. [2021-12-21 13:25:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6351 states, 5870 states have (on average 1.5616695059625212) internal successors, (9167), 5887 states have internal predecessors, (9167), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-21 13:25:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 9988 transitions. [2021-12-21 13:25:23,552 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 9988 transitions. Word has length 184 [2021-12-21 13:25:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:23,553 INFO L470 AbstractCegarLoop]: Abstraction has 6351 states and 9988 transitions. [2021-12-21 13:25:23,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 9988 transitions. [2021-12-21 13:25:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:23,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:23,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:23,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:25:23,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:23,557 INFO L85 PathProgramCache]: Analyzing trace with hash -372057336, now seen corresponding path program 1 times [2021-12-21 13:25:23,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:23,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430075440] [2021-12-21 13:25:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:23,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:23,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:23,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430075440] [2021-12-21 13:25:23,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430075440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:23,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:23,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:23,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669995156] [2021-12-21 13:25:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:23,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:23,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:23,710 INFO L87 Difference]: Start difference. First operand 6351 states and 9988 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:28,049 INFO L93 Difference]: Finished difference Result 23225 states and 36987 transitions. [2021-12-21 13:25:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:28,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:28,135 INFO L225 Difference]: With dead ends: 23225 [2021-12-21 13:25:28,135 INFO L226 Difference]: Without dead ends: 16895 [2021-12-21 13:25:28,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:28,157 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 1801 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:28,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 3354 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 13:25:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16895 states. [2021-12-21 13:25:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16895 to 12304. [2021-12-21 13:25:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 11375 states have (on average 1.56) internal successors, (17745), 11408 states have internal predecessors, (17745), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-21 13:25:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 19416 transitions. [2021-12-21 13:25:29,050 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 19416 transitions. Word has length 184 [2021-12-21 13:25:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:29,050 INFO L470 AbstractCegarLoop]: Abstraction has 12304 states and 19416 transitions. [2021-12-21 13:25:29,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 19416 transitions. [2021-12-21 13:25:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:29,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:29,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:29,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:25:29,058 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2141528950, now seen corresponding path program 1 times [2021-12-21 13:25:29,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79601794] [2021-12-21 13:25:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:29,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:29,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:29,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79601794] [2021-12-21 13:25:29,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79601794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:29,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:29,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:29,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209649017] [2021-12-21 13:25:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:29,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:29,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:29,213 INFO L87 Difference]: Start difference. First operand 12304 states and 19416 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:31,810 INFO L93 Difference]: Finished difference Result 29252 states and 46852 transitions. [2021-12-21 13:25:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:25:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:31,861 INFO L225 Difference]: With dead ends: 29252 [2021-12-21 13:25:31,862 INFO L226 Difference]: Without dead ends: 16969 [2021-12-21 13:25:31,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:25:31,896 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1263 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:31,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 1608 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:25:31,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16969 states. [2021-12-21 13:25:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16969 to 12304. [2021-12-21 13:25:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 11375 states have (on average 1.5570989010989011) internal successors, (17712), 11408 states have internal predecessors, (17712), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-21 13:25:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 19383 transitions. [2021-12-21 13:25:32,762 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 19383 transitions. Word has length 184 [2021-12-21 13:25:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:32,763 INFO L470 AbstractCegarLoop]: Abstraction has 12304 states and 19383 transitions. [2021-12-21 13:25:32,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 19383 transitions. [2021-12-21 13:25:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:32,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:32,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:32,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:25:32,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1542169288, now seen corresponding path program 1 times [2021-12-21 13:25:32,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802259746] [2021-12-21 13:25:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:32,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:32,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802259746] [2021-12-21 13:25:32,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802259746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:32,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:32,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:32,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431500223] [2021-12-21 13:25:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:32,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:32,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:32,914 INFO L87 Difference]: Start difference. First operand 12304 states and 19383 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:39,018 INFO L93 Difference]: Finished difference Result 45110 states and 71881 transitions. [2021-12-21 13:25:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:39,096 INFO L225 Difference]: With dead ends: 45110 [2021-12-21 13:25:39,097 INFO L226 Difference]: Without dead ends: 32827 [2021-12-21 13:25:39,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:39,129 INFO L933 BasicCegarLoop]: 1264 mSDtfsCounter, 1793 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 3988 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:39,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 3343 Invalid, 4072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3988 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-21 13:25:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32827 states. [2021-12-21 13:25:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32827 to 24274. [2021-12-21 13:25:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24274 states, 22449 states have (on average 1.5553476769566572) internal successors, (34916), 22514 states have internal predecessors, (34916), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-21 13:25:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24274 states to 24274 states and 38449 transitions. [2021-12-21 13:25:40,735 INFO L78 Accepts]: Start accepts. Automaton has 24274 states and 38449 transitions. Word has length 184 [2021-12-21 13:25:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:40,735 INFO L470 AbstractCegarLoop]: Abstraction has 24274 states and 38449 transitions. [2021-12-21 13:25:40,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 24274 states and 38449 transitions. [2021-12-21 13:25:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:40,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:40,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:40,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:25:40,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:40,746 INFO L85 PathProgramCache]: Analyzing trace with hash 136977610, now seen corresponding path program 1 times [2021-12-21 13:25:40,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:40,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751286092] [2021-12-21 13:25:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:40,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:40,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751286092] [2021-12-21 13:25:40,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751286092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:40,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:40,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:40,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280885216] [2021-12-21 13:25:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:40,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:40,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:40,861 INFO L87 Difference]: Start difference. First operand 24274 states and 38449 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:49,460 INFO L93 Difference]: Finished difference Result 88950 states and 142545 transitions. [2021-12-21 13:25:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:25:49,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:25:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:49,687 INFO L225 Difference]: With dead ends: 88950 [2021-12-21 13:25:49,687 INFO L226 Difference]: Without dead ends: 64697 [2021-12-21 13:25:49,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:25:49,757 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 1795 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 3977 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:49,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1814 Valid, 3336 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3977 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 13:25:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64697 states. [2021-12-21 13:25:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64697 to 48275. [2021-12-21 13:25:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48275 states, 44658 states have (on average 1.5543463657127503) internal successors, (69414), 44787 states have internal predecessors, (69414), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2021-12-21 13:25:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48275 states to 48275 states and 77157 transitions. [2021-12-21 13:25:54,063 INFO L78 Accepts]: Start accepts. Automaton has 48275 states and 77157 transitions. Word has length 184 [2021-12-21 13:25:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:54,063 INFO L470 AbstractCegarLoop]: Abstraction has 48275 states and 77157 transitions. [2021-12-21 13:25:54,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 48275 states and 77157 transitions. [2021-12-21 13:25:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:25:54,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:54,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:54,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:25:54,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2031311496, now seen corresponding path program 1 times [2021-12-21 13:25:54,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948305946] [2021-12-21 13:25:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:54,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:25:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:25:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:25:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:54,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:54,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948305946] [2021-12-21 13:25:54,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948305946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:54,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:54,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:54,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045343397] [2021-12-21 13:25:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:54,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:54,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:54,208 INFO L87 Difference]: Start difference. First operand 48275 states and 77157 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:26:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:26:09,018 INFO L93 Difference]: Finished difference Result 176499 states and 285459 transitions. [2021-12-21 13:26:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:26:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 5 states have internal predecessors, (174), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2021-12-21 13:26:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.