./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.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.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d9ed75528b8d19bd57b9807f295b98ef03135122ab1c9d2a59ccb3a2a66766e0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:59:09,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:59:09,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:59:09,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:59:09,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:59:09,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:59:09,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:59:09,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:59:09,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:59:09,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:59:09,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:59:09,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:59:09,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:59:09,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:59:09,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:59:09,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:59:09,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:59:09,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:59:09,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:59:09,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:59:09,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:59:09,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:59:09,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:59:09,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:59:09,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:59:09,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:59:09,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:59:09,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:59:09,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:59:09,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:59:09,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:59:09,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:59:09,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:59:09,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:59:09,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:59:09,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:59:09,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:59:09,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:59:09,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:59:09,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:59:09,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:59:09,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:59:09,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:59:09,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:59:09,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:59:09,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:59:09,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:59:09,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:59:09,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:59:09,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:59:09,650 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:59:09,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:59:09,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:59:09,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:59:09,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:59:09,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:59:09,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:59:09,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:59:09,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:59:09,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:59:09,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:59:09,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:59:09,655 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:59:09,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:59:09,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:59:09,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:59:09,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9ed75528b8d19bd57b9807f295b98ef03135122ab1c9d2a59ccb3a2a66766e0 [2021-12-17 18:59:09,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:59:09,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:59:09,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:59:09,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:59:09,835 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:59:09,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c [2021-12-17 18:59:09,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742645d38/c42ba0ed9ffb4b899c5c21981813f65d/FLAG3414f40aa [2021-12-17 18:59:10,581 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:59:10,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c [2021-12-17 18:59:10,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742645d38/c42ba0ed9ffb4b899c5c21981813f65d/FLAG3414f40aa [2021-12-17 18:59:10,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742645d38/c42ba0ed9ffb4b899c5c21981813f65d [2021-12-17 18:59:10,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:59:10,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:59:10,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:59:10,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:59:10,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:59:10,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:59:10" (1/1) ... [2021-12-17 18:59:10,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328c673d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:10, skipping insertion in model container [2021-12-17 18:59:10,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:59:10" (1/1) ... [2021-12-17 18:59:10,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:59:11,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:59:12,270 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.10.cil-2.c[380323,380336] [2021-12-17 18:59:12,294 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.10.cil-2.c[383339,383352] [2021-12-17 18:59:12,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:59:12,500 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:59:13,061 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.10.cil-2.c[380323,380336] [2021-12-17 18:59:13,066 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.10.cil-2.c[383339,383352] [2021-12-17 18:59:13,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:59:13,136 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:59:13,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13 WrapperNode [2021-12-17 18:59:13,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:59:13,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:59:13,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:59:13,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:59:13,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,486 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-17 18:59:13,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:59:13,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:59:13,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:59:13,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:59:13,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:59:13,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:59:13,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:59:13,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:59:13,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (1/1) ... [2021-12-17 18:59:13,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:59:13,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:59:13,913 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 18:59:13,920 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 18:59:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:59:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:59:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:59:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:59:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:59:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:59:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:59:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:59:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:59:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:59:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:59:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:59:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:59:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:59:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:59:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:59:14,047 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:59:14,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:59:18,965 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:59:18,982 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:59:18,982 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-17 18:59:18,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:59:18 BoogieIcfgContainer [2021-12-17 18:59:18,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:59:18,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:59:18,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:59:18,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:59:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:59:10" (1/3) ... [2021-12-17 18:59:18,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dea1cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:59:18, skipping insertion in model container [2021-12-17 18:59:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:59:13" (2/3) ... [2021-12-17 18:59:18,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dea1cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:59:18, skipping insertion in model container [2021-12-17 18:59:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:59:18" (3/3) ... [2021-12-17 18:59:18,992 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.10.cil-2.c [2021-12-17 18:59:18,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:59:18,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:59:19,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:59:19,040 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 18:59:19,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:59:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-17 18:59:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:19,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:19,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:19,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-17 18:59:19,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:19,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908179520] [2021-12-17 18:59:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:19,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:19,378 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 18:59:19,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:19,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908179520] [2021-12-17 18:59:19,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908179520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:19,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:19,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:59:19,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392098428] [2021-12-17 18:59:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:19,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:59:19,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:59:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:59:19,410 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 18:59:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:20,528 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2021-12-17 18:59:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:59:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:20,548 INFO L225 Difference]: With dead ends: 5140 [2021-12-17 18:59:20,549 INFO L226 Difference]: Without dead ends: 2568 [2021-12-17 18:59:20,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:59:20,559 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17020 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:20,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 17020 Invalid, 656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:59:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-17 18:59:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2021-12-17 18:59:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-17 18:59:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2021-12-17 18:59:20,665 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2021-12-17 18:59:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:20,666 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2021-12-17 18:59:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 18:59:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2021-12-17 18:59:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:20,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:20,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:20,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:59:20,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2021-12-17 18:59:20,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:20,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809863981] [2021-12-17 18:59:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:20,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:20,910 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 18:59:20,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809863981] [2021-12-17 18:59:20,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809863981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:20,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:20,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:20,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556021740] [2021-12-17 18:59:20,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:20,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:20,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:20,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:20,914 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:23,530 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2021-12-17 18:59:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:23,546 INFO L225 Difference]: With dead ends: 3341 [2021-12-17 18:59:23,546 INFO L226 Difference]: Without dead ends: 3032 [2021-12-17 18:59:23,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:23,560 INFO L933 BasicCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17526 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22354 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:23,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5237 Valid, 22354 Invalid, 2805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:59:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-17 18:59:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2021-12-17 18:59:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-17 18:59:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2021-12-17 18:59:23,652 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2021-12-17 18:59:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:23,652 INFO L470 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2021-12-17 18:59:23,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2021-12-17 18:59:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:23,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:23,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:23,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:59:23,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2021-12-17 18:59:23,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883839644] [2021-12-17 18:59:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:23,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:23,806 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 18:59:23,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:23,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883839644] [2021-12-17 18:59:23,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883839644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:23,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:23,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:23,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540540776] [2021-12-17 18:59:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:23,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:23,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:23,810 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:26,275 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2021-12-17 18:59:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:26,291 INFO L225 Difference]: With dead ends: 4476 [2021-12-17 18:59:26,292 INFO L226 Difference]: Without dead ends: 3842 [2021-12-17 18:59:26,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:26,294 INFO L933 BasicCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17435 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:26,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5277 Valid, 22190 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 18:59:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-12-17 18:59:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2021-12-17 18:59:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-17 18:59:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2021-12-17 18:59:26,392 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2021-12-17 18:59:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:26,392 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2021-12-17 18:59:26,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2021-12-17 18:59:26,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:26,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:26,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:26,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:59:26,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2021-12-17 18:59:26,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:26,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651237108] [2021-12-17 18:59:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:26,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:26,533 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 18:59:26,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:26,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651237108] [2021-12-17 18:59:26,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651237108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:26,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:26,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:26,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664009402] [2021-12-17 18:59:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:26,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:26,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:26,538 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:28,932 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2021-12-17 18:59:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:28,954 INFO L225 Difference]: With dead ends: 6696 [2021-12-17 18:59:28,954 INFO L226 Difference]: Without dead ends: 5460 [2021-12-17 18:59:28,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:28,961 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22337 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:28,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22337 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 18:59:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-12-17 18:59:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2021-12-17 18:59:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-17 18:59:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2021-12-17 18:59:29,164 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2021-12-17 18:59:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:29,165 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2021-12-17 18:59:29,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:29,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2021-12-17 18:59:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:29,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:29,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:29,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:59:29,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2021-12-17 18:59:29,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:29,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145584180] [2021-12-17 18:59:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:29,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:29,299 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 18:59:29,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:29,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145584180] [2021-12-17 18:59:29,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145584180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:29,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:29,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:29,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911310580] [2021-12-17 18:59:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:29,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:29,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:29,302 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:31,677 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2021-12-17 18:59:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:31,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:31,706 INFO L225 Difference]: With dead ends: 11134 [2021-12-17 18:59:31,707 INFO L226 Difference]: Without dead ends: 8692 [2021-12-17 18:59:31,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:31,716 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22334 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:31,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22334 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:59:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2021-12-17 18:59:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2021-12-17 18:59:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-17 18:59:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2021-12-17 18:59:31,996 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2021-12-17 18:59:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:31,998 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2021-12-17 18:59:31,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2021-12-17 18:59:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:32,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:32,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:32,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:59:32,003 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2021-12-17 18:59:32,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:32,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540684050] [2021-12-17 18:59:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:32,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:32,128 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 18:59:32,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540684050] [2021-12-17 18:59:32,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540684050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:32,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:32,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:32,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476420340] [2021-12-17 18:59:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:32,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:32,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:32,131 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:34,847 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2021-12-17 18:59:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:34,898 INFO L225 Difference]: With dead ends: 20008 [2021-12-17 18:59:34,898 INFO L226 Difference]: Without dead ends: 15148 [2021-12-17 18:59:34,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:34,916 INFO L933 BasicCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22331 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:34,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22331 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:59:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2021-12-17 18:59:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2021-12-17 18:59:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-17 18:59:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2021-12-17 18:59:35,305 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2021-12-17 18:59:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:35,306 INFO L470 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2021-12-17 18:59:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2021-12-17 18:59:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:35,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:35,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:35,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:59:35,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2021-12-17 18:59:35,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:35,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162946994] [2021-12-17 18:59:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:35,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:35,418 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 18:59:35,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:35,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162946994] [2021-12-17 18:59:35,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162946994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:35,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:35,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:35,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050244414] [2021-12-17 18:59:35,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:35,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:35,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:35,421 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:38,370 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2021-12-17 18:59:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:38,459 INFO L225 Difference]: With dead ends: 37754 [2021-12-17 18:59:38,459 INFO L226 Difference]: Without dead ends: 28044 [2021-12-17 18:59:38,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:38,578 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22328 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:38,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22328 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:59:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2021-12-17 18:59:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2021-12-17 18:59:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-17 18:59:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2021-12-17 18:59:39,316 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2021-12-17 18:59:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:39,317 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2021-12-17 18:59:39,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2021-12-17 18:59:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:39,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:39,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:39,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:59:39,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2021-12-17 18:59:39,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551355461] [2021-12-17 18:59:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:39,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:39,454 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 18:59:39,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551355461] [2021-12-17 18:59:39,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551355461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:39,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:39,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:39,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781619987] [2021-12-17 18:59:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:39,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:39,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:39,456 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:41,606 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2021-12-17 18:59:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:41,787 INFO L225 Difference]: With dead ends: 47941 [2021-12-17 18:59:41,788 INFO L226 Difference]: Without dead ends: 28499 [2021-12-17 18:59:41,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:59:41,823 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16636 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21132 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:41,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4934 Valid, 21132 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:59:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2021-12-17 18:59:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2021-12-17 18:59:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-17 18:59:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2021-12-17 18:59:42,594 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2021-12-17 18:59:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:42,595 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2021-12-17 18:59:42,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2021-12-17 18:59:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:42,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:42,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:42,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:59:42,606 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2021-12-17 18:59:42,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:42,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471440122] [2021-12-17 18:59:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:42,714 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 18:59:42,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471440122] [2021-12-17 18:59:42,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471440122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:42,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:42,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:42,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224232055] [2021-12-17 18:59:42,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:42,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:42,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:42,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:42,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:42,717 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:46,757 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2021-12-17 18:59:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:59:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:46,923 INFO L225 Difference]: With dead ends: 73117 [2021-12-17 18:59:46,923 INFO L226 Difference]: Without dead ends: 53677 [2021-12-17 18:59:46,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:59:46,972 INFO L933 BasicCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:46,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 22312 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:59:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2021-12-17 18:59:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2021-12-17 18:59:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-17 18:59:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2021-12-17 18:59:48,704 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2021-12-17 18:59:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:48,704 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2021-12-17 18:59:48,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2021-12-17 18:59:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:48,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:48,723 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, 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 18:59:48,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:59:48,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2021-12-17 18:59:48,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444820960] [2021-12-17 18:59:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:48,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:48,832 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 18:59:48,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:48,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444820960] [2021-12-17 18:59:48,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444820960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:48,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:48,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415733082] [2021-12-17 18:59:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:48,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:48,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:48,834 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:52,103 INFO L93 Difference]: Finished difference Result 93512 states and 153929 transitions. [2021-12-17 18:59:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:52,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:52,437 INFO L225 Difference]: With dead ends: 93512 [2021-12-17 18:59:52,437 INFO L226 Difference]: Without dead ends: 54421 [2021-12-17 18:59:52,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:59:52,501 INFO L933 BasicCegarLoop]: 4463 mSDtfsCounter, 5101 mSDsluCounter, 12509 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 16972 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:52,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5119 Valid, 16972 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:59:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54421 states. [2021-12-17 18:59:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54421 to 41230. [2021-12-17 18:59:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5700261261974506) internal successors, (59493), 38023 states have internal predecessors, (59493), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-17 18:59:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66814 transitions. [2021-12-17 18:59:54,338 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66814 transitions. Word has length 156 [2021-12-17 18:59:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:59:54,339 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66814 transitions. [2021-12-17 18:59:54,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66814 transitions. [2021-12-17 18:59:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 18:59:54,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:59:54,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:59:54,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:59:54,358 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:59:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:59:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1515130185, now seen corresponding path program 1 times [2021-12-17 18:59:54,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:59:54,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550220412] [2021-12-17 18:59:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:59:54,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:59:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:59:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 18:59:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 18:59:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 18:59:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 18:59:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:59:54,456 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 18:59:54,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:59:54,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550220412] [2021-12-17 18:59:54,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550220412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:59:54,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:59:54,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:59:54,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872960924] [2021-12-17 18:59:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:59:54,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:59:54,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:59:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:59:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:59:54,458 INFO L87 Difference]: Start difference. First operand 41230 states and 66814 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 18:59:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:59:57,874 INFO L93 Difference]: Finished difference Result 93384 states and 153287 transitions. [2021-12-17 18:59:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:59:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 18:59:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:59:58,152 INFO L225 Difference]: With dead ends: 93384 [2021-12-17 18:59:58,152 INFO L226 Difference]: Without dead ends: 54293 [2021-12-17 18:59:58,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:59:58,214 INFO L933 BasicCegarLoop]: 4483 mSDtfsCounter, 5051 mSDsluCounter, 12508 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 16991 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:59:58,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 16991 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 18:59:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54293 states. [2021-12-17 18:59:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54293 to 41230. [2021-12-17 18:59:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5666218034993271) internal successors, (59364), 38023 states have internal predecessors, (59364), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-17 19:00:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66685 transitions. [2021-12-17 19:00:00,030 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66685 transitions. Word has length 156 [2021-12-17 19:00:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:00:00,030 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66685 transitions. [2021-12-17 19:00:00,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 19:00:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66685 transitions. [2021-12-17 19:00:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 19:00:00,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:00:00,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:00:00,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:00:00,048 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:00:00,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:00:00,048 INFO L85 PathProgramCache]: Analyzing trace with hash -568092299, now seen corresponding path program 1 times [2021-12-17 19:00:00,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:00:00,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236665885] [2021-12-17 19:00:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:00:00,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:00:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:00:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 19:00:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 19:00:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 19:00:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 19:00:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:00,155 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 19:00:00,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:00:00,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236665885] [2021-12-17 19:00:00,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236665885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:00:00,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:00:00,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:00:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935837770] [2021-12-17 19:00:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:00:00,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:00:00,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:00:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:00:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:00:00,157 INFO L87 Difference]: Start difference. First operand 41230 states and 66685 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 19:00:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:00:08,920 INFO L93 Difference]: Finished difference Result 161376 states and 260798 transitions. [2021-12-17 19:00:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:00:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 19:00:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:00:09,336 INFO L225 Difference]: With dead ends: 161376 [2021-12-17 19:00:09,336 INFO L226 Difference]: Without dead ends: 122287 [2021-12-17 19:00:09,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:00:09,599 INFO L933 BasicCegarLoop]: 4930 mSDtfsCounter, 5332 mSDsluCounter, 17507 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 22437 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:00:09,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 22437 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 19:00:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122287 states. [2021-12-17 19:00:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122287 to 79888. [2021-12-17 19:00:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79888 states, 73351 states have (on average 1.557143051901133) internal successors, (114218), 73609 states have internal predecessors, (114218), 4743 states have call successors, (4743), 1536 states have call predecessors, (4743), 1792 states have return successors, (11816), 4998 states have call predecessors, (11816), 4743 states have call successors, (11816) [2021-12-17 19:00:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79888 states to 79888 states and 130777 transitions. [2021-12-17 19:00:13,809 INFO L78 Accepts]: Start accepts. Automaton has 79888 states and 130777 transitions. Word has length 156 [2021-12-17 19:00:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:00:13,809 INFO L470 AbstractCegarLoop]: Abstraction has 79888 states and 130777 transitions. [2021-12-17 19:00:13,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 19:00:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 79888 states and 130777 transitions. [2021-12-17 19:00:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-17 19:00:13,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:00:13,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:00:13,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:00:13,843 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:00:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:00:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash 293741303, now seen corresponding path program 1 times [2021-12-17 19:00:13,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:00:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176299457] [2021-12-17 19:00:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:00:13,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:00:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:00:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 19:00:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 19:00:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 19:00:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 19:00:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:00:13,952 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 19:00:13,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:00:13,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176299457] [2021-12-17 19:00:13,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176299457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:00:13,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:00:13,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:00:13,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416418717] [2021-12-17 19:00:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:00:13,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:00:13,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:00:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:00:13,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:00:13,954 INFO L87 Difference]: Start difference. First operand 79888 states and 130777 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 19:00:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:00:20,617 INFO L93 Difference]: Finished difference Result 182604 states and 304659 transitions. [2021-12-17 19:00:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:00:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-17 19:00:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:00:21,026 INFO L225 Difference]: With dead ends: 182604 [2021-12-17 19:00:21,026 INFO L226 Difference]: Without dead ends: 104855 [2021-12-17 19:00:21,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:00:21,201 INFO L933 BasicCegarLoop]: 4476 mSDtfsCounter, 4909 mSDsluCounter, 16634 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 21110 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:00:21,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4927 Valid, 21110 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:00:21,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104855 states.