./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_label45+token_ring.08.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:58:54,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:58:54,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:58:54,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:58:54,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:58:54,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:58:54,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:58:54,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:58:54,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:58:54,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:58:54,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:58:54,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:58:54,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:58:54,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:58:54,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:58:54,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:58:54,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:58:54,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:58:54,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:58:54,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:58:54,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:58:54,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:58:54,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:58:54,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:58:54,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:58:54,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:58:54,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:58:54,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:58:54,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:58:54,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:58:54,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:58:54,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:58:54,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:58:54,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:58:54,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:58:54,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:58:54,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:58:54,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:58:54,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:58:54,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:58:54,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:58:54,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:58:54,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:58:54,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:58:54,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:58:54,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:58:54,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:58:54,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:58:54,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:58:54,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:58:54,601 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:58:54,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:58:54,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:58:54,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:58:54,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:58:54,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:58:54,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:58:54,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:58:54,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:58:54,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:58:54,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:58:54,605 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:58:54,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:58:54,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:58:54,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:58:54,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d [2021-12-17 18:58:54,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:58:54,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:58:54,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:58:54,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:58:54,783 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:58:54,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-17 18:58:54,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab98e3884/4beedfdd8e1e4306b296f046b63a1544/FLAG0dc1e85bb [2021-12-17 18:58:55,580 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:58:55,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-17 18:58:55,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab98e3884/4beedfdd8e1e4306b296f046b63a1544/FLAG0dc1e85bb [2021-12-17 18:58:55,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab98e3884/4beedfdd8e1e4306b296f046b63a1544 [2021-12-17 18:58:55,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:58:55,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:58:55,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:58:55,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:58:55,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:58:55,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:58:55" (1/1) ... [2021-12-17 18:58:55,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e24788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:55, skipping insertion in model container [2021-12-17 18:58:55,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:58:55" (1/1) ... [2021-12-17 18:58:55,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:58:56,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:58:57,127 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_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-17 18:58:57,147 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_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-17 18:58:57,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:58:57,324 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:58:57,899 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_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-17 18:58:57,903 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_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-17 18:58:57,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:58:57,963 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:58:57,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57 WrapperNode [2021-12-17 18:58:57,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:58:57,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:58:57,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:58:57,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:58:57,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,330 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-17 18:58:58,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:58:58,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:58:58,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:58:58,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:58:58,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:58:58,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:58:58,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:58:58,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:58:58,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (1/1) ... [2021-12-17 18:58:58,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:58:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:58:58,862 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) [2021-12-17 18:58:58,863 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 [2021-12-17 18:58:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:58:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:58:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:58:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:58:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:58:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:58:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:58:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:58:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:58:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:58:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:58:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:58:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:58:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:58:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:58:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:58:59,027 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:58:59,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:59:03,749 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:59:03,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:59:03,769 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-17 18:59:03,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:59:03 BoogieIcfgContainer [2021-12-17 18:59:03,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:59:03,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:59:03,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:59:03,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:59:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:58:55" (1/3) ... [2021-12-17 18:59:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c15a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:59:03, skipping insertion in model container [2021-12-17 18:59:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:58:57" (2/3) ... [2021-12-17 18:59:03,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c15a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:59:03, skipping insertion in model container [2021-12-17 18:59:03,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:59:03" (3/3) ... [2021-12-17 18:59:03,793 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.08.cil-1.c [2021-12-17 18:59:03,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:59:03,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:59:03,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:59:03,839 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 [2021-12-17 18:59:03,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:59:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 18:59:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:03,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:03,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:03,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:03,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-17 18:59:03,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:03,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339345391] [2021-12-17 18:59:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:03,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:04,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339345391] [2021-12-17 18:59:04,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339345391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:04,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:04,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:59:04,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211385766] [2021-12-17 18:59:04,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:59:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:59:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:59:04,303 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-17 18:59:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:05,258 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-17 18:59:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:59:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:05,289 INFO L225 Difference]: With dead ends: 5022 [2021-12-17 18:59:05,289 INFO L226 Difference]: Without dead ends: 2496 [2021-12-17 18:59:05,298 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 [2021-12-17 18:59:05,303 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:05,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:59:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-17 18:59:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-17 18:59:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 18:59:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-17 18:59:05,431 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-17 18:59:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:05,432 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-17 18:59:05,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-17 18:59:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-17 18:59:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:05,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:05,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:05,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:59:05,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-17 18:59:05,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:05,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220601267] [2021-12-17 18:59:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:05,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:05,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220601267] [2021-12-17 18:59:05,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220601267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:05,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:05,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:59:05,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117649102] [2021-12-17 18:59:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:05,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:59:05,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:59:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:59:05,618 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-17 18:59:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:07,248 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-17 18:59:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:59:07,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:07,259 INFO L225 Difference]: With dead ends: 3126 [2021-12-17 18:59:07,259 INFO L226 Difference]: Without dead ends: 2865 [2021-12-17 18:59:07,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:59:07,264 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:07,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:59:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-17 18:59:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-17 18:59:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-17 18:59:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-17 18:59:07,335 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-17 18:59:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:07,335 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-17 18:59:07,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-17 18:59:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-17 18:59:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:07,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:07,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:07,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:59:07,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-17 18:59:07,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451912515] [2021-12-17 18:59:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:07,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:07,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:07,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451912515] [2021-12-17 18:59:07,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451912515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:07,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:07,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:07,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046511879] [2021-12-17 18:59:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:07,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:07,490 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:09,528 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2021-12-17 18:59:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:09,540 INFO L225 Difference]: With dead ends: 3779 [2021-12-17 18:59:09,540 INFO L226 Difference]: Without dead ends: 3246 [2021-12-17 18:59:09,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:09,544 INFO L933 BasicCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17247 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21924 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:09,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5079 Valid, 21924 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:59:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-12-17 18:59:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2021-12-17 18:59:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-17 18:59:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2021-12-17 18:59:09,628 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2021-12-17 18:59:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2021-12-17 18:59:09,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2021-12-17 18:59:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:09,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:09,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:09,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:59:09,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-17 18:59:09,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:09,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985069074] [2021-12-17 18:59:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:09,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:09,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985069074] [2021-12-17 18:59:09,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985069074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:09,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:09,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:09,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004912633] [2021-12-17 18:59:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:09,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:09,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:09,750 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:11,615 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2021-12-17 18:59:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:11,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:11,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:11,629 INFO L225 Difference]: With dead ends: 4741 [2021-12-17 18:59:11,629 INFO L226 Difference]: Without dead ends: 3955 [2021-12-17 18:59:11,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:11,633 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16786 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21280 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:11,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21280 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:59:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-12-17 18:59:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2021-12-17 18:59:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-17 18:59:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2021-12-17 18:59:11,782 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2021-12-17 18:59:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2021-12-17 18:59:11,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2021-12-17 18:59:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:11,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:11,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:11,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:59:11,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-17 18:59:11,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:11,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569528675] [2021-12-17 18:59:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:11,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:11,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569528675] [2021-12-17 18:59:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569528675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:11,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:11,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014001242] [2021-12-17 18:59:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:11,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:11,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:11,878 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:13,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:13,660 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2021-12-17 18:59:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:13,677 INFO L225 Difference]: With dead ends: 6592 [2021-12-17 18:59:13,677 INFO L226 Difference]: Without dead ends: 5299 [2021-12-17 18:59:13,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:13,683 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21908 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:13,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21908 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:59:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-12-17 18:59:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2021-12-17 18:59:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-17 18:59:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2021-12-17 18:59:13,814 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2021-12-17 18:59:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:13,814 INFO L470 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2021-12-17 18:59:13,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2021-12-17 18:59:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:13,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:13,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:13,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:59:13,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-17 18:59:13,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:13,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243519246] [2021-12-17 18:59:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:13,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:13,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:13,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243519246] [2021-12-17 18:59:13,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243519246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:13,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:13,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:13,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382502559] [2021-12-17 18:59:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:13,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:13,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:13,923 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:15,957 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2021-12-17 18:59:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:15,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:15,983 INFO L225 Difference]: With dead ends: 10286 [2021-12-17 18:59:15,983 INFO L226 Difference]: Without dead ends: 7978 [2021-12-17 18:59:15,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:15,992 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21900 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:15,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 21900 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 18:59:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2021-12-17 18:59:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2021-12-17 18:59:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-17 18:59:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2021-12-17 18:59:16,196 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2021-12-17 18:59:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:16,196 INFO L470 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2021-12-17 18:59:16,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2021-12-17 18:59:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:16,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:16,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:59:16,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-17 18:59:16,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829781294] [2021-12-17 18:59:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:16,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:16,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829781294] [2021-12-17 18:59:16,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829781294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:16,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:16,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:16,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385400518] [2021-12-17 18:59:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:16,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:16,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:16,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:16,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:16,305 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:18,318 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2021-12-17 18:59:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:18,356 INFO L225 Difference]: With dead ends: 17692 [2021-12-17 18:59:18,356 INFO L226 Difference]: Without dead ends: 13340 [2021-12-17 18:59:18,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:18,372 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21895 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:18,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5068 Valid, 21895 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:59:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2021-12-17 18:59:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2021-12-17 18:59:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 18:59:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2021-12-17 18:59:18,716 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2021-12-17 18:59:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2021-12-17 18:59:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2021-12-17 18:59:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:18,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:18,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:18,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:59:18,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-17 18:59:18,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650500297] [2021-12-17 18:59:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:18,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:18,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:18,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650500297] [2021-12-17 18:59:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650500297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:18,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130191301] [2021-12-17 18:59:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:18,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:18,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:18,817 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:20,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:20,223 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2021-12-17 18:59:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:20,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:20,260 INFO L225 Difference]: With dead ends: 21934 [2021-12-17 18:59:20,260 INFO L226 Difference]: Without dead ends: 13481 [2021-12-17 18:59:20,285 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 [2021-12-17 18:59:20,287 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20906 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:20,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 20906 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:59:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2021-12-17 18:59:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2021-12-17 18:59:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 18:59:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2021-12-17 18:59:20,640 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2021-12-17 18:59:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:20,641 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2021-12-17 18:59:20,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2021-12-17 18:59:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:20,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:20,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:20,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:59:20,647 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-17 18:59:20,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367388845] [2021-12-17 18:59:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:20,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:20,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367388845] [2021-12-17 18:59:20,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367388845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:20,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:20,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:20,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949972408] [2021-12-17 18:59:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:20,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:20,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:20,757 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:21,994 INFO L93 Difference]: Finished difference Result 21900 states and 35328 transitions. [2021-12-17 18:59:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:22,034 INFO L225 Difference]: With dead ends: 21900 [2021-12-17 18:59:22,035 INFO L226 Difference]: Without dead ends: 13447 [2021-12-17 18:59:22,060 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 [2021-12-17 18:59:22,062 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4868 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:22,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4884 Valid, 16802 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:59:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2021-12-17 18:59:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 10590. [2021-12-17 18:59:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6083537581699345) internal successors, (15749), 9826 states have internal predecessors, (15749), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 18:59:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17156 transitions. [2021-12-17 18:59:22,420 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17156 transitions. Word has length 134 [2021-12-17 18:59:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:22,421 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17156 transitions. [2021-12-17 18:59:22,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17156 transitions. [2021-12-17 18:59:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:22,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:22,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:22,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:59:22,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-17 18:59:22,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:22,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305445125] [2021-12-17 18:59:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:22,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:22,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305445125] [2021-12-17 18:59:22,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305445125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:22,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:22,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:22,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934581925] [2021-12-17 18:59:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:22,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:22,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:22,541 INFO L87 Difference]: Start difference. First operand 10590 states and 17156 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:23,866 INFO L93 Difference]: Finished difference Result 21866 states and 35161 transitions. [2021-12-17 18:59:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:23,905 INFO L225 Difference]: With dead ends: 21866 [2021-12-17 18:59:23,905 INFO L226 Difference]: Without dead ends: 13413 [2021-12-17 18:59:23,922 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 [2021-12-17 18:59:23,923 INFO L933 BasicCegarLoop]: 4390 mSDtfsCounter, 4746 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20896 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:23,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20896 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:59:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2021-12-17 18:59:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 10590. [2021-12-17 18:59:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.604983660130719) internal successors, (15716), 9826 states have internal predecessors, (15716), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 18:59:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17123 transitions. [2021-12-17 18:59:24,293 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17123 transitions. Word has length 134 [2021-12-17 18:59:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:24,293 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17123 transitions. [2021-12-17 18:59:24,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17123 transitions. [2021-12-17 18:59:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:24,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:24,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:24,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:59:24,299 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-17 18:59:24,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:24,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078649367] [2021-12-17 18:59:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:24,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:24,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:24,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078649367] [2021-12-17 18:59:24,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078649367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:24,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:24,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:24,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204271834] [2021-12-17 18:59:24,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:24,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:24,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:24,401 INFO L87 Difference]: Start difference. First operand 10590 states and 17123 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:27,450 INFO L93 Difference]: Finished difference Result 35889 states and 56830 transitions. [2021-12-17 18:59:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:59:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:27,521 INFO L225 Difference]: With dead ends: 35889 [2021-12-17 18:59:27,522 INFO L226 Difference]: Without dead ends: 27436 [2021-12-17 18:59:27,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:59:27,544 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5169 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:27,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5183 Valid, 21407 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 18:59:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27436 states. [2021-12-17 18:59:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27436 to 18666. [2021-12-17 18:59:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5715619892598647) internal successors, (26924), 17198 states have internal predecessors, (26924), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 18:59:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29873 transitions. [2021-12-17 18:59:28,405 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29873 transitions. Word has length 134 [2021-12-17 18:59:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:28,405 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29873 transitions. [2021-12-17 18:59:28,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29873 transitions. [2021-12-17 18:59:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:28,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:28,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:28,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:59:28,418 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-17 18:59:28,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559741407] [2021-12-17 18:59:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:28,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:28,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559741407] [2021-12-17 18:59:28,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559741407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:28,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:28,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:28,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872529122] [2021-12-17 18:59:28,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:28,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:28,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:28,507 INFO L87 Difference]: Start difference. First operand 18666 states and 29873 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:30,285 INFO L93 Difference]: Finished difference Result 40414 states and 64848 transitions. [2021-12-17 18:59:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:30,342 INFO L225 Difference]: With dead ends: 40414 [2021-12-17 18:59:30,343 INFO L226 Difference]: Without dead ends: 23885 [2021-12-17 18:59:30,370 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 [2021-12-17 18:59:30,370 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4747 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4763 SdHoareTripleChecker+Valid, 20887 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:30,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4763 Valid, 20887 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:59:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23885 states. [2021-12-17 18:59:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23885 to 18666. [2021-12-17 18:59:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5677679196824656) internal successors, (26859), 17198 states have internal predecessors, (26859), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 18:59:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29808 transitions. [2021-12-17 18:59:31,258 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29808 transitions. Word has length 134 [2021-12-17 18:59:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:31,258 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29808 transitions. [2021-12-17 18:59:31,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29808 transitions. [2021-12-17 18:59:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:31,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:31,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:31,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:59:31,267 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-12-17 18:59:31,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556335951] [2021-12-17 18:59:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:31,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:31,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556335951] [2021-12-17 18:59:31,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556335951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:31,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:31,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:31,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887613677] [2021-12-17 18:59:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:31,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:31,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:31,352 INFO L87 Difference]: Start difference. First operand 18666 states and 29808 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:33,239 INFO L93 Difference]: Finished difference Result 40282 states and 64389 transitions. [2021-12-17 18:59:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:33,301 INFO L225 Difference]: With dead ends: 40282 [2021-12-17 18:59:33,302 INFO L226 Difference]: Without dead ends: 23753 [2021-12-17 18:59:33,334 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 [2021-12-17 18:59:33,334 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 4744 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 20881 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:33,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 20881 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:59:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23753 states. [2021-12-17 18:59:34,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 18666. [2021-12-17 18:59:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5639738501050666) internal successors, (26794), 17198 states have internal predecessors, (26794), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 18:59:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29743 transitions. [2021-12-17 18:59:34,182 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29743 transitions. Word has length 134 [2021-12-17 18:59:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:34,182 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29743 transitions. [2021-12-17 18:59:34,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29743 transitions. [2021-12-17 18:59:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:34,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:34,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:34,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:59:34,190 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:34,191 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-12-17 18:59:34,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:34,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743952976] [2021-12-17 18:59:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:34,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:34,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:34,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743952976] [2021-12-17 18:59:34,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743952976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:34,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:34,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:34,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709569892] [2021-12-17 18:59:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:34,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:34,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:34,270 INFO L87 Difference]: Start difference. First operand 18666 states and 29743 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:36,009 INFO L93 Difference]: Finished difference Result 40216 states and 64062 transitions. [2021-12-17 18:59:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:36,079 INFO L225 Difference]: With dead ends: 40216 [2021-12-17 18:59:36,079 INFO L226 Difference]: Without dead ends: 23687 [2021-12-17 18:59:36,112 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 [2021-12-17 18:59:36,113 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4860 mSDsluCounter, 12406 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 16777 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:36,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4876 Valid, 16777 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 18:59:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23687 states. [2021-12-17 18:59:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23687 to 18666. [2021-12-17 18:59:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5601797805276676) internal successors, (26729), 17198 states have internal predecessors, (26729), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 18:59:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29678 transitions. [2021-12-17 18:59:37,078 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29678 transitions. Word has length 134 [2021-12-17 18:59:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:37,079 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29678 transitions. [2021-12-17 18:59:37,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29678 transitions. [2021-12-17 18:59:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:37,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:37,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:37,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:59:37,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -762554196, now seen corresponding path program 1 times [2021-12-17 18:59:37,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337124160] [2021-12-17 18:59:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:37,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:37,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:37,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337124160] [2021-12-17 18:59:37,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337124160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:37,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:37,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:37,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273990856] [2021-12-17 18:59:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:37,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:37,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:37,189 INFO L87 Difference]: Start difference. First operand 18666 states and 29678 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:41,270 INFO L93 Difference]: Finished difference Result 63555 states and 100350 transitions. [2021-12-17 18:59:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:59:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:41,393 INFO L225 Difference]: With dead ends: 63555 [2021-12-17 18:59:41,393 INFO L226 Difference]: Without dead ends: 47026 [2021-12-17 18:59:41,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:59:41,443 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5031 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 21877 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:41,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5045 Valid, 21877 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:59:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47026 states. [2021-12-17 18:59:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47026 to 35199. [2021-12-17 18:59:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35199 states, 32225 states have (on average 1.5377812257564003) internal successors, (49555), 32355 states have internal predecessors, (49555), 2070 states have call successors, (2070), 774 states have call predecessors, (2070), 902 states have return successors, (4385), 2197 states have call predecessors, (4385), 2070 states have call successors, (4385) [2021-12-17 18:59:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35199 states to 35199 states and 56010 transitions. [2021-12-17 18:59:43,439 INFO L78 Accepts]: Start accepts. Automaton has 35199 states and 56010 transitions. Word has length 134 [2021-12-17 18:59:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:43,440 INFO L470 AbstractCegarLoop]: Abstraction has 35199 states and 56010 transitions. [2021-12-17 18:59:43,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 35199 states and 56010 transitions. [2021-12-17 18:59:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:43,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:43,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:43,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:59:43,456 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1134942570, now seen corresponding path program 1 times [2021-12-17 18:59:43,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:43,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917220244] [2021-12-17 18:59:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:43,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:43,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:43,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917220244] [2021-12-17 18:59:43,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917220244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:43,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:43,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:43,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177981635] [2021-12-17 18:59:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:43,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:43,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:43,532 INFO L87 Difference]: Start difference. First operand 35199 states and 56010 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:49,930 INFO L93 Difference]: Finished difference Result 122230 states and 195116 transitions. [2021-12-17 18:59:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:59:49,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:50,169 INFO L225 Difference]: With dead ends: 122230 [2021-12-17 18:59:50,170 INFO L226 Difference]: Without dead ends: 89168 [2021-12-17 18:59:50,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:59:50,301 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5064 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21828 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:50,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 21828 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:59:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89168 states. [2021-12-17 18:59:53,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89168 to 68192. [2021-12-17 18:59:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68192 states, 62402 states have (on average 1.5264414602096086) internal successors, (95253), 62660 states have internal predecessors, (95253), 3990 states have call successors, (3990), 1542 states have call predecessors, (3990), 1798 states have return successors, (10807), 4245 states have call predecessors, (10807), 3990 states have call successors, (10807) [2021-12-17 18:59:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68192 states to 68192 states and 110050 transitions. [2021-12-17 18:59:54,185 INFO L78 Accepts]: Start accepts. Automaton has 68192 states and 110050 transitions. Word has length 134 [2021-12-17 18:59:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:54,186 INFO L470 AbstractCegarLoop]: Abstraction has 68192 states and 110050 transitions. [2021-12-17 18:59:54,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 68192 states and 110050 transitions. [2021-12-17 18:59:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 18:59:54,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:54,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:54,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:59:54,211 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2128983828, now seen corresponding path program 1 times [2021-12-17 18:59:54,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51817708] [2021-12-17 18:59:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:54,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 18:59:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 18:59:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 18:59:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 18:59:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:59:54,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:54,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51817708] [2021-12-17 18:59:54,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51817708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:54,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:54,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:54,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116236644] [2021-12-17 18:59:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:54,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:54,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:54,285 INFO L87 Difference]: Start difference. First operand 68192 states and 110050 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 18:59:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:59,989 INFO L93 Difference]: Finished difference Result 151614 states and 249023 transitions. [2021-12-17 18:59:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-17 18:59:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:00:00,275 INFO L225 Difference]: With dead ends: 151614 [2021-12-17 19:00:00,275 INFO L226 Difference]: Without dead ends: 85559 [2021-12-17 19:00:00,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:00:00,405 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 4860 mSDsluCounter, 12406 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 16768 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:00:00,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4876 Valid, 16768 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 19:00:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85559 states. [2021-12-17 19:00:04,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85559 to 68192. [2021-12-17 19:00:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68192 states, 62402 states have (on average 1.5223230024678696) internal successors, (94996), 62660 states have internal predecessors, (94996), 3990 states have call successors, (3990), 1542 states have call predecessors, (3990), 1798 states have return successors, (10807), 4245 states have call predecessors, (10807), 3990 states have call successors, (10807) [2021-12-17 19:00:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68192 states to 68192 states and 109793 transitions. [2021-12-17 19:00:04,631 INFO L78 Accepts]: Start accepts. Automaton has 68192 states and 109793 transitions. Word has length 134 [2021-12-17 19:00:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:00:04,632 INFO L470 AbstractCegarLoop]: Abstraction has 68192 states and 109793 transitions. [2021-12-17 19:00:04,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-17 19:00:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 68192 states and 109793 transitions. [2021-12-17 19:00:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 19:00:04,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:00:04,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:00:04,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 19:00:04,659 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:00:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:00:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 259580202, now seen corresponding path program 1 times [2021-12-17 19:00:04,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:00:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187343656] [2021-12-17 19:00:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:00:04,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:00:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:00:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:00:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:00:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:00:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:00:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:00:04,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:00:04,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187343656] [2021-12-17 19:00:04,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187343656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:00:04,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:00:04,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:00:04,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131792690] [2021-12-17 19:00:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:00:04,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:00:04,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:00:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:00:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:00:04,760 INFO L87 Difference]: Start difference. First operand 68192 states and 109793 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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)