./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.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 306f27715421bb9e01ba3845cf0d248e2328487b897edb7780679dfca2048140 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:42:42,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:42:42,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:42:42,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:42:42,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:42:42,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:42:42,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:42:42,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:42:42,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:42:42,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:42:42,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:42:42,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:42:42,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:42:42,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:42:42,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:42:42,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:42:42,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:42:42,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:42:42,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:42:42,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:42:42,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:42:42,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:42:42,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:42:42,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:42:42,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:42:42,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:42:42,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:42:42,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:42:42,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:42:42,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:42:42,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:42:42,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:42:42,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:42:42,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:42:42,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:42:42,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:42:42,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:42:42,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:42:42,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:42:42,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:42:42,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:42:42,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:42:42,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:42:42,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:42:42,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:42:42,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:42:42,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:42:42,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:42:42,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:42:42,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:42:42,962 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:42:42,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:42:42,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:42:42,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:42:42,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:42:42,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:42:42,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:42:42,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:42:42,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:42:42,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:42:42,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:42:42,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:42:42,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:42:42,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:42:42,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:42:42,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306f27715421bb9e01ba3845cf0d248e2328487b897edb7780679dfca2048140 [2021-12-14 15:42:43,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:42:43,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:42:43,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:42:43,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:42:43,142 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:42:43,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c [2021-12-14 15:42:43,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bbffd27/b140d346ba3e435e9297d27759bf0f30/FLAG1c89bf1a6 [2021-12-14 15:42:43,862 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:42:43,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c [2021-12-14 15:42:43,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bbffd27/b140d346ba3e435e9297d27759bf0f30/FLAG1c89bf1a6 [2021-12-14 15:42:44,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bbffd27/b140d346ba3e435e9297d27759bf0f30 [2021-12-14 15:42:44,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:42:44,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:42:44,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:42:44,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:42:44,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:42:44,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:42:44" (1/1) ... [2021-12-14 15:42:44,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b820538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:44, skipping insertion in model container [2021-12-14 15:42:44,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:42:44" (1/1) ... [2021-12-14 15:42:44,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:42:44,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:42:45,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2021-12-14 15:42:45,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2021-12-14 15:42:45,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:42:45,811 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:42:46,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2021-12-14 15:42:46,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2021-12-14 15:42:46,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:42:46,621 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:42:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46 WrapperNode [2021-12-14 15:42:46,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:42:46,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:42:46,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:42:46,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:42:46,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:46,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:46,970 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-14 15:42:46,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:42:46,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:42:46,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:42:46,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:42:46,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:46,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:42:47,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:42:47,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:42:47,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:42:47,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (1/1) ... [2021-12-14 15:42:47,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:42:47,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:42:47,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:42:47,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:42:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:42:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:42:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:42:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:42:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:42:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:42:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:42:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:42:47,625 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:42:47,627 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:42:52,605 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:42:52,629 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:42:52,630 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-14 15:42:52,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:42:52 BoogieIcfgContainer [2021-12-14 15:42:52,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:42:52,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:42:52,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:42:52,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:42:52,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:42:44" (1/3) ... [2021-12-14 15:42:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbb1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:42:52, skipping insertion in model container [2021-12-14 15:42:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:42:46" (2/3) ... [2021-12-14 15:42:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbb1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:42:52, skipping insertion in model container [2021-12-14 15:42:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:42:52" (3/3) ... [2021-12-14 15:42:52,642 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.06.cil-2.c [2021-12-14 15:42:52,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:42:52,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:42:52,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:42:52,694 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:42:52,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:42:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:42:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:42:52,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:52,741 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] [2021-12-14 15:42:52,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-14 15:42:52,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:52,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474543680] [2021-12-14 15:42:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:52,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:42:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:42:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:42:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:42:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:52,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:52,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474543680] [2021-12-14 15:42:52,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474543680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:52,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:52,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:42:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110192401] [2021-12-14 15:42:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:52,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:42:52,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:42:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:42:53,018 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:53,870 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-12-14 15:42:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:42:53,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2021-12-14 15:42:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:53,889 INFO L225 Difference]: With dead ends: 4896 [2021-12-14 15:42:53,890 INFO L226 Difference]: Without dead ends: 2424 [2021-12-14 15:42:53,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:42:53,899 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:53,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:42:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-14 15:42:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-12-14 15:42:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:42:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-12-14 15:42:53,986 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-12-14 15:42:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:53,986 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-12-14 15:42:53,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-12-14 15:42:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:42:53,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:53,990 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] [2021-12-14 15:42:53,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:42:53,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-12-14 15:42:53,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:53,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888099415] [2021-12-14 15:42:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:53,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:42:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:42:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:42:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:42:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:54,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:54,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888099415] [2021-12-14 15:42:54,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888099415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:54,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:54,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:54,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280093094] [2021-12-14 15:42:54,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:54,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:54,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:54,133 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:55,060 INFO L93 Difference]: Finished difference Result 2651 states and 4792 transitions. [2021-12-14 15:42:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:55,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:42:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:55,069 INFO L225 Difference]: With dead ends: 2651 [2021-12-14 15:42:55,069 INFO L226 Difference]: Without dead ends: 2438 [2021-12-14 15:42:55,070 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 [2021-12-14 15:42:55,071 INFO L933 BasicCegarLoop]: 4325 mSDtfsCounter, 4580 mSDsluCounter, 16381 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20706 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:55,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20706 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:42:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-12-14 15:42:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2348. [2021-12-14 15:42:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8383620689655173) internal successors, (4265), 2322 states have internal predecessors, (4265), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 15:42:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4305 transitions. [2021-12-14 15:42:55,114 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4305 transitions. Word has length 112 [2021-12-14 15:42:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:55,114 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4305 transitions. [2021-12-14 15:42:55,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4305 transitions. [2021-12-14 15:42:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:42:55,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:55,116 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] [2021-12-14 15:42:55,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:42:55,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-12-14 15:42:55,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:55,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042902764] [2021-12-14 15:42:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:55,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:42:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:42:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:42:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:42:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:55,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042902764] [2021-12-14 15:42:55,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042902764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:55,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:55,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:55,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078382886] [2021-12-14 15:42:55,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:55,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:55,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:55,224 INFO L87 Difference]: Start difference. First operand 2348 states and 4305 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:57,022 INFO L93 Difference]: Finished difference Result 2943 states and 5254 transitions. [2021-12-14 15:42:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:42:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:57,032 INFO L225 Difference]: With dead ends: 2943 [2021-12-14 15:42:57,033 INFO L226 Difference]: Without dead ends: 2730 [2021-12-14 15:42:57,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:57,039 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4793 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 21495 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:57,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 21495 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:42:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-12-14 15:42:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2571. [2021-12-14 15:42:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8165210484511518) internal successors, (4574), 2522 states have internal predecessors, (4574), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-14 15:42:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4655 transitions. [2021-12-14 15:42:57,101 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4655 transitions. Word has length 112 [2021-12-14 15:42:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:57,102 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4655 transitions. [2021-12-14 15:42:57,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4655 transitions. [2021-12-14 15:42:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:42:57,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:57,105 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] [2021-12-14 15:42:57,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:42:57,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-12-14 15:42:57,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:57,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655536272] [2021-12-14 15:42:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:57,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:42:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:42:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:42:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:42:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:57,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:57,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655536272] [2021-12-14 15:42:57,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655536272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:57,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:57,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:57,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885195016] [2021-12-14 15:42:57,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:57,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:57,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:57,246 INFO L87 Difference]: Start difference. First operand 2571 states and 4655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:58,798 INFO L93 Difference]: Finished difference Result 3701 states and 6440 transitions. [2021-12-14 15:42:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:58,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:42:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:58,812 INFO L225 Difference]: With dead ends: 3701 [2021-12-14 15:42:58,812 INFO L226 Difference]: Without dead ends: 3267 [2021-12-14 15:42:58,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:58,815 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:58,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21522 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:42:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-12-14 15:42:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2982. [2021-12-14 15:42:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2885 states have (on average 1.7805892547660311) internal successors, (5137), 2891 states have internal predecessors, (5137), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-14 15:42:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5288 transitions. [2021-12-14 15:42:58,919 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5288 transitions. Word has length 112 [2021-12-14 15:42:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:58,920 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 5288 transitions. [2021-12-14 15:42:58,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:42:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5288 transitions. [2021-12-14 15:42:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:42:58,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:58,922 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] [2021-12-14 15:42:58,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:42:58,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-12-14 15:42:58,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:58,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921782676] [2021-12-14 15:42:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:58,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:42:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:42:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:42:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:42:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:42:59,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921782676] [2021-12-14 15:42:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921782676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:59,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:59,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:59,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381782573] [2021-12-14 15:42:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:59,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:59,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:59,069 INFO L87 Difference]: Start difference. First operand 2982 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:00,760 INFO L93 Difference]: Finished difference Result 5184 states and 8757 transitions. [2021-12-14 15:43:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:43:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:00,777 INFO L225 Difference]: With dead ends: 5184 [2021-12-14 15:43:00,777 INFO L226 Difference]: Without dead ends: 4339 [2021-12-14 15:43:00,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:43:00,782 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21518 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:00,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21518 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:43:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-12-14 15:43:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 3807. [2021-12-14 15:43:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7302595251242407) internal successors, (6267), 3632 states have internal predecessors, (6267), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:43:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6564 transitions. [2021-12-14 15:43:00,922 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6564 transitions. Word has length 112 [2021-12-14 15:43:00,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:00,923 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6564 transitions. [2021-12-14 15:43:00,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6564 transitions. [2021-12-14 15:43:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:00,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:00,925 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] [2021-12-14 15:43:00,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:43:00,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-12-14 15:43:00,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:00,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514041797] [2021-12-14 15:43:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:00,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:01,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514041797] [2021-12-14 15:43:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514041797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:01,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:01,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:01,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159338391] [2021-12-14 15:43:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:01,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:01,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:01,029 INFO L87 Difference]: Start difference. First operand 3807 states and 6564 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:01,904 INFO L93 Difference]: Finished difference Result 6031 states and 10100 transitions. [2021-12-14 15:43:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:43:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:01,920 INFO L225 Difference]: With dead ends: 6031 [2021-12-14 15:43:01,920 INFO L226 Difference]: Without dead ends: 4359 [2021-12-14 15:43:01,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:43:01,928 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4581 mSDsluCounter, 16380 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 20691 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:01,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 20691 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:43:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-12-14 15:43:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 3807. [2021-12-14 15:43:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7277747101049143) internal successors, (6258), 3632 states have internal predecessors, (6258), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:43:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6555 transitions. [2021-12-14 15:43:02,059 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6555 transitions. Word has length 112 [2021-12-14 15:43:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:02,060 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6555 transitions. [2021-12-14 15:43:02,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6555 transitions. [2021-12-14 15:43:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:02,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:02,063 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] [2021-12-14 15:43:02,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:43:02,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-12-14 15:43:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:02,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003397654] [2021-12-14 15:43:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:02,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:02,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003397654] [2021-12-14 15:43:02,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003397654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:02,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:02,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:02,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67239416] [2021-12-14 15:43:02,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:02,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:02,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:02,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:02,167 INFO L87 Difference]: Start difference. First operand 3807 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:02,945 INFO L93 Difference]: Finished difference Result 6022 states and 10057 transitions. [2021-12-14 15:43:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:43:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:02,958 INFO L225 Difference]: With dead ends: 6022 [2021-12-14 15:43:02,958 INFO L226 Difference]: Without dead ends: 4350 [2021-12-14 15:43:02,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:43:02,963 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 4672 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 16613 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:02,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 16613 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:43:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-12-14 15:43:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 3807. [2021-12-14 15:43:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7252898950855882) internal successors, (6249), 3632 states have internal predecessors, (6249), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-14 15:43:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6546 transitions. [2021-12-14 15:43:03,063 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6546 transitions. Word has length 112 [2021-12-14 15:43:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:03,064 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6546 transitions. [2021-12-14 15:43:03,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:03,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6546 transitions. [2021-12-14 15:43:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:03,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:03,066 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] [2021-12-14 15:43:03,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:43:03,066 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:03,067 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-12-14 15:43:03,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:03,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214006766] [2021-12-14 15:43:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:03,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:03,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214006766] [2021-12-14 15:43:03,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214006766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:03,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:03,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:03,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232521463] [2021-12-14 15:43:03,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:03,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:03,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:03,147 INFO L87 Difference]: Start difference. First operand 3807 states and 6546 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:04,730 INFO L93 Difference]: Finished difference Result 8873 states and 14409 transitions. [2021-12-14 15:43:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:43:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:04,752 INFO L225 Difference]: With dead ends: 8873 [2021-12-14 15:43:04,753 INFO L226 Difference]: Without dead ends: 7203 [2021-12-14 15:43:04,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:43:04,761 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 5020 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 21491 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:04,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 21491 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:43:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2021-12-14 15:43:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 5454. [2021-12-14 15:43:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5101 states have (on average 1.666535973338561) internal successors, (8501), 5119 states have internal predecessors, (8501), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2021-12-14 15:43:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 9092 transitions. [2021-12-14 15:43:04,954 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 9092 transitions. Word has length 112 [2021-12-14 15:43:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:04,954 INFO L470 AbstractCegarLoop]: Abstraction has 5454 states and 9092 transitions. [2021-12-14 15:43:04,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 9092 transitions. [2021-12-14 15:43:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:04,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:04,958 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] [2021-12-14 15:43:04,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:43:04,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-12-14 15:43:04,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:04,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615102875] [2021-12-14 15:43:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:04,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:05,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615102875] [2021-12-14 15:43:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615102875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:05,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:05,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025713885] [2021-12-14 15:43:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:05,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:05,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:05,057 INFO L87 Difference]: Start difference. First operand 5454 states and 9092 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:06,835 INFO L93 Difference]: Finished difference Result 15054 states and 24055 transitions. [2021-12-14 15:43:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:43:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:06,865 INFO L225 Difference]: With dead ends: 15054 [2021-12-14 15:43:06,865 INFO L226 Difference]: Without dead ends: 11737 [2021-12-14 15:43:06,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:43:06,879 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 4954 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:06,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4974 Valid, 21483 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:43:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-12-14 15:43:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8755. [2021-12-14 15:43:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8074 states have (on average 1.6154322516720336) internal successors, (13043), 8108 states have internal predecessors, (13043), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2021-12-14 15:43:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 14260 transitions. [2021-12-14 15:43:07,167 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 14260 transitions. Word has length 112 [2021-12-14 15:43:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:07,168 INFO L470 AbstractCegarLoop]: Abstraction has 8755 states and 14260 transitions. [2021-12-14 15:43:07,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 14260 transitions. [2021-12-14 15:43:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:07,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:07,174 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] [2021-12-14 15:43:07,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:43:07,174 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-12-14 15:43:07,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:07,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250531717] [2021-12-14 15:43:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:07,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:07,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250531717] [2021-12-14 15:43:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250531717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:07,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:07,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:07,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363043641] [2021-12-14 15:43:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:07,266 INFO L87 Difference]: Start difference. First operand 8755 states and 14260 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:09,295 INFO L93 Difference]: Finished difference Result 27325 states and 43401 transitions. [2021-12-14 15:43:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:43:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:09,351 INFO L225 Difference]: With dead ends: 27325 [2021-12-14 15:43:09,351 INFO L226 Difference]: Without dead ends: 20707 [2021-12-14 15:43:09,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:43:09,374 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4927 mSDsluCounter, 16957 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:09,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21431 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:43:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2021-12-14 15:43:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 15341. [2021-12-14 15:43:10,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 14020 states have (on average 1.5793865905848787) internal successors, (22143), 14086 states have internal predecessors, (22143), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2021-12-14 15:43:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 24742 transitions. [2021-12-14 15:43:10,078 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 24742 transitions. Word has length 112 [2021-12-14 15:43:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:10,078 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 24742 transitions. [2021-12-14 15:43:10,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 24742 transitions. [2021-12-14 15:43:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:10,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:10,088 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] [2021-12-14 15:43:10,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:43:10,089 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-12-14 15:43:10,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470799690] [2021-12-14 15:43:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:10,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:10,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:10,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470799690] [2021-12-14 15:43:10,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470799690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:10,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:10,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:10,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001757069] [2021-12-14 15:43:10,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:10,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:10,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:10,177 INFO L87 Difference]: Start difference. First operand 15341 states and 24742 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:13,010 INFO L93 Difference]: Finished difference Result 51275 states and 81797 transitions. [2021-12-14 15:43:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:43:13,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:13,119 INFO L225 Difference]: With dead ends: 51275 [2021-12-14 15:43:13,119 INFO L226 Difference]: Without dead ends: 38071 [2021-12-14 15:43:13,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:43:13,162 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4805 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:13,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 21517 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:43:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2021-12-14 15:43:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 28481. [2021-12-14 15:43:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5581583822167335) internal successors, (40375), 26042 states have internal predecessors, (40375), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-14 15:43:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46160 transitions. [2021-12-14 15:43:14,400 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46160 transitions. Word has length 112 [2021-12-14 15:43:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:14,400 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46160 transitions. [2021-12-14 15:43:14,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46160 transitions. [2021-12-14 15:43:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:14,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:14,417 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] [2021-12-14 15:43:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:43:14,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1164896607, now seen corresponding path program 1 times [2021-12-14 15:43:14,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:14,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945200384] [2021-12-14 15:43:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:14,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:14,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:14,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945200384] [2021-12-14 15:43:14,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945200384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:14,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:14,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:14,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497836404] [2021-12-14 15:43:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:14,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:14,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:14,495 INFO L87 Difference]: Start difference. First operand 28481 states and 46160 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:16,448 INFO L93 Difference]: Finished difference Result 61777 states and 101218 transitions. [2021-12-14 15:43:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:43:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:16,552 INFO L225 Difference]: With dead ends: 61777 [2021-12-14 15:43:16,552 INFO L226 Difference]: Without dead ends: 35431 [2021-12-14 15:43:16,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:43:16,602 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4580 mSDsluCounter, 16378 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20665 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:16,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20665 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:43:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35431 states. [2021-12-14 15:43:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35431 to 28481. [2021-12-14 15:43:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5531799938252546) internal successors, (40246), 26042 states have internal predecessors, (40246), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-14 15:43:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46031 transitions. [2021-12-14 15:43:18,223 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46031 transitions. Word has length 112 [2021-12-14 15:43:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:18,224 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46031 transitions. [2021-12-14 15:43:18,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46031 transitions. [2021-12-14 15:43:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:18,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:18,239 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] [2021-12-14 15:43:18,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:43:18,239 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1805214495, now seen corresponding path program 1 times [2021-12-14 15:43:18,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349503609] [2021-12-14 15:43:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:18,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:18,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:18,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349503609] [2021-12-14 15:43:18,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349503609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:18,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:18,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:43:18,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694958517] [2021-12-14 15:43:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:18,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:43:18,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:43:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:43:18,311 INFO L87 Difference]: Start difference. First operand 28481 states and 46031 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:22,702 INFO L93 Difference]: Finished difference Result 96071 states and 155187 transitions. [2021-12-14 15:43:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:43:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:22,922 INFO L225 Difference]: With dead ends: 96071 [2021-12-14 15:43:22,923 INFO L226 Difference]: Without dead ends: 69727 [2021-12-14 15:43:22,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:43:22,999 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 4782 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 21475 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:23,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4794 Valid, 21475 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:43:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69727 states. [2021-12-14 15:43:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69727 to 54825. [2021-12-14 15:43:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54825 states, 49824 states have (on average 1.5409039820166988) internal successors, (76774), 50082 states have internal predecessors, (76774), 3207 states have call successors, (3207), 1536 states have call predecessors, (3207), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2021-12-14 15:43:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54825 states to 54825 states and 90261 transitions. [2021-12-14 15:43:25,733 INFO L78 Accepts]: Start accepts. Automaton has 54825 states and 90261 transitions. Word has length 112 [2021-12-14 15:43:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:25,733 INFO L470 AbstractCegarLoop]: Abstraction has 54825 states and 90261 transitions. [2021-12-14 15:43:25,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 54825 states and 90261 transitions. [2021-12-14 15:43:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 15:43:25,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:25,760 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] [2021-12-14 15:43:25,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:43:25,761 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash -238456545, now seen corresponding path program 1 times [2021-12-14 15:43:25,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:25,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266430248] [2021-12-14 15:43:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:25,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:43:25,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266430248] [2021-12-14 15:43:25,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266430248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:25,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:43:25,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:43:25,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393336566] [2021-12-14 15:43:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:25,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:43:25,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:43:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:43:25,837 INFO L87 Difference]: Start difference. First operand 54825 states and 90261 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:43:33,660 INFO L93 Difference]: Finished difference Result 184593 states and 299929 transitions. [2021-12-14 15:43:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:43:33,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2021-12-14 15:43:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:43:34,669 INFO L225 Difference]: With dead ends: 184593 [2021-12-14 15:43:34,669 INFO L226 Difference]: Without dead ends: 131905 [2021-12-14 15:43:34,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:43:34,779 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5048 mSDsluCounter, 12607 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17253 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:43:34,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17253 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:43:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131905 states. [2021-12-14 15:43:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131905 to 106229. [2021-12-14 15:43:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106229 states, 96235 states have (on average 1.524964929599418) internal successors, (146755), 97005 states have internal predecessors, (146755), 6408 states have call successors, (6408), 3072 states have call predecessors, (6408), 3584 states have return successors, (20297), 6407 states have call predecessors, (20297), 6408 states have call successors, (20297) [2021-12-14 15:43:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106229 states to 106229 states and 173460 transitions. [2021-12-14 15:43:40,706 INFO L78 Accepts]: Start accepts. Automaton has 106229 states and 173460 transitions. Word has length 112 [2021-12-14 15:43:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:43:40,706 INFO L470 AbstractCegarLoop]: Abstraction has 106229 states and 173460 transitions. [2021-12-14 15:43:40,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:43:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 106229 states and 173460 transitions. [2021-12-14 15:43:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-14 15:43:40,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:43:40,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:43:40,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:43:40,869 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:43:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:43:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1077919352, now seen corresponding path program 1 times [2021-12-14 15:43:40,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:43:40,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486209850] [2021-12-14 15:43:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:40,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:43:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:43:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 15:43:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 15:43:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 15:43:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 15:43:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 15:43:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 15:43:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 15:43:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 15:43:40,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:43:40,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486209850] [2021-12-14 15:43:40,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486209850] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:43:40,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467614373] [2021-12-14 15:43:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:43:40,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:43:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:43:40,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:43:40,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 15:43:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:43:41,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 15:43:41,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:43:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 15:43:41,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:43:41,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467614373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:43:41,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 15:43:41,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-14 15:43:41,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935751368] [2021-12-14 15:43:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:43:41,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:43:41,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:43:41,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:43:41,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:43:41,373 INFO L87 Difference]: Start difference. First operand 106229 states and 173460 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)