./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.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/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.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 55ec916898aa0c4eb40269e81429fc0273ca07ec4caf7be0cd441cce0028ad79 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:15:35,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:15:35,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:15:35,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:15:35,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:15:35,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:15:35,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:15:35,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:15:35,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:15:35,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:15:35,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:15:35,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:15:35,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:15:35,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:15:35,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:15:35,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:15:35,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:15:35,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:15:35,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:15:35,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:15:35,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:15:35,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:15:35,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:15:35,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:15:35,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:15:35,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:15:35,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:15:35,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:15:35,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:15:35,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:15:35,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:15:35,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:15:35,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:15:35,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:15:35,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:15:35,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:15:35,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:15:35,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:15:35,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:15:35,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:15:35,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:15:35,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:15:35,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:15:35,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:15:35,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:15:35,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:15:35,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:15:35,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:15:35,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:15:35,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:15:35,905 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:15:35,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:15:35,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:15:35,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:15:35,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:15:35,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:15:35,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:15:35,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:15:35,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:15:35,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:15:35,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:15:35,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:15:35,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:15:35,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:15:35,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:15:35,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55ec916898aa0c4eb40269e81429fc0273ca07ec4caf7be0cd441cce0028ad79 [2021-12-16 01:15:36,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:15:36,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:15:36,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:15:36,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:15:36,131 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:15:36,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-16 01:15:36,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c48011c4/8de4092390b44c69a7e66cd0bf80b260/FLAG9b14078c7 [2021-12-16 01:15:36,618 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:15:36,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-16 01:15:36,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c48011c4/8de4092390b44c69a7e66cd0bf80b260/FLAG9b14078c7 [2021-12-16 01:15:36,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c48011c4/8de4092390b44c69a7e66cd0bf80b260 [2021-12-16 01:15:36,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:15:36,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:15:36,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:15:36,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:15:36,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:15:36,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:15:36" (1/1) ... [2021-12-16 01:15:36,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51facb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:36, skipping insertion in model container [2021-12-16 01:15:36,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:15:36" (1/1) ... [2021-12-16 01:15:36,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:15:36,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:15:36,942 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/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2021-12-16 01:15:36,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:15:36,952 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:15:36,992 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/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2021-12-16 01:15:36,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:15:37,009 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:15:37,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37 WrapperNode [2021-12-16 01:15:37,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:15:37,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:15:37,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:15:37,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:15:37,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,073 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 520 [2021-12-16 01:15:37,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:15:37,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:15:37,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:15:37,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:15:37,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:15:37,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:15:37,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:15:37,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:15:37,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (1/1) ... [2021-12-16 01:15:37,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:15:37,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:15:37,154 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) [2021-12-16 01:15:37,156 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 [2021-12-16 01:15:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:15:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:15:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:15:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:15:37,293 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:15:37,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:15:37,665 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:15:37,669 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:15:37,670 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 01:15:37,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:15:37 BoogieIcfgContainer [2021-12-16 01:15:37,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:15:37,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:15:37,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:15:37,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:15:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:15:36" (1/3) ... [2021-12-16 01:15:37,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:15:37, skipping insertion in model container [2021-12-16 01:15:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:15:37" (2/3) ... [2021-12-16 01:15:37,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:15:37, skipping insertion in model container [2021-12-16 01:15:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:15:37" (3/3) ... [2021-12-16 01:15:37,676 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-16 01:15:37,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:15:37,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:15:37,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:15:37,712 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 [2021-12-16 01:15:37,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:15:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 01:15:37,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:37,728 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] [2021-12-16 01:15:37,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -486996250, now seen corresponding path program 1 times [2021-12-16 01:15:37,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957645496] [2021-12-16 01:15:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:37,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:37,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957645496] [2021-12-16 01:15:37,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957645496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:37,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:37,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 01:15:37,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746882793] [2021-12-16 01:15:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:37,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 01:15:37,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 01:15:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 01:15:37,931 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:37,950 INFO L93 Difference]: Finished difference Result 224 states and 381 transitions. [2021-12-16 01:15:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 01:15:37,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-16 01:15:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:37,958 INFO L225 Difference]: With dead ends: 224 [2021-12-16 01:15:37,958 INFO L226 Difference]: Without dead ends: 143 [2021-12-16 01:15:37,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 01:15:37,963 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:37,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-16 01:15:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-16 01:15:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.7535211267605635) internal successors, (249), 142 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 249 transitions. [2021-12-16 01:15:37,998 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 249 transitions. Word has length 45 [2021-12-16 01:15:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:37,998 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 249 transitions. [2021-12-16 01:15:37,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 249 transitions. [2021-12-16 01:15:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-16 01:15:38,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,000 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] [2021-12-16 01:15:38,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:15:38,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1858803548, now seen corresponding path program 1 times [2021-12-16 01:15:38,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166103639] [2021-12-16 01:15:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:38,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166103639] [2021-12-16 01:15:38,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166103639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:38,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:15:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452422893] [2021-12-16 01:15:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:38,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:15:38,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:15:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:15:38,185 INFO L87 Difference]: Start difference. First operand 143 states and 249 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:38,271 INFO L93 Difference]: Finished difference Result 223 states and 374 transitions. [2021-12-16 01:15:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:15:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-16 01:15:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:38,273 INFO L225 Difference]: With dead ends: 223 [2021-12-16 01:15:38,273 INFO L226 Difference]: Without dead ends: 143 [2021-12-16 01:15:38,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:15:38,275 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 3 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:38,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 924 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:15:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-16 01:15:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-16 01:15:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.323943661971831) internal successors, (188), 142 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2021-12-16 01:15:38,293 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 45 [2021-12-16 01:15:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2021-12-16 01:15:38,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2021-12-16 01:15:38,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:38,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,296 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] [2021-12-16 01:15:38,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:15:38,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1176555156, now seen corresponding path program 1 times [2021-12-16 01:15:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706453025] [2021-12-16 01:15:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:38,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:38,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706453025] [2021-12-16 01:15:38,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706453025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:38,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:38,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:38,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589436595] [2021-12-16 01:15:38,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:38,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:38,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:38,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,439 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:38,463 INFO L93 Difference]: Finished difference Result 289 states and 420 transitions. [2021-12-16 01:15:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:38,466 INFO L225 Difference]: With dead ends: 289 [2021-12-16 01:15:38,467 INFO L226 Difference]: Without dead ends: 213 [2021-12-16 01:15:38,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,469 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 111 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:38,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 414 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-16 01:15:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-12-16 01:15:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4142857142857144) internal successors, (297), 210 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 297 transitions. [2021-12-16 01:15:38,486 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 297 transitions. Word has length 105 [2021-12-16 01:15:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:38,486 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 297 transitions. [2021-12-16 01:15:38,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 297 transitions. [2021-12-16 01:15:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:38,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,489 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] [2021-12-16 01:15:38,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:15:38,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1701405430, now seen corresponding path program 1 times [2021-12-16 01:15:38,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672008648] [2021-12-16 01:15:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:38,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:38,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672008648] [2021-12-16 01:15:38,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672008648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:38,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:38,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:38,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278620711] [2021-12-16 01:15:38,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:38,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,591 INFO L87 Difference]: Start difference. First operand 211 states and 297 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:38,615 INFO L93 Difference]: Finished difference Result 487 states and 737 transitions. [2021-12-16 01:15:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:38,619 INFO L225 Difference]: With dead ends: 487 [2021-12-16 01:15:38,619 INFO L226 Difference]: Without dead ends: 343 [2021-12-16 01:15:38,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,626 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 107 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:38,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-16 01:15:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2021-12-16 01:15:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.4823529411764707) internal successors, (504), 340 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 504 transitions. [2021-12-16 01:15:38,646 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 504 transitions. Word has length 105 [2021-12-16 01:15:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:38,647 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 504 transitions. [2021-12-16 01:15:38,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 504 transitions. [2021-12-16 01:15:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:38,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,648 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] [2021-12-16 01:15:38,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:15:38,649 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash -179136962, now seen corresponding path program 1 times [2021-12-16 01:15:38,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855985146] [2021-12-16 01:15:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:38,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855985146] [2021-12-16 01:15:38,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855985146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:38,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:38,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:38,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417844371] [2021-12-16 01:15:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:38,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:38,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,717 INFO L87 Difference]: Start difference. First operand 341 states and 504 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:38,736 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2021-12-16 01:15:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:38,739 INFO L225 Difference]: With dead ends: 865 [2021-12-16 01:15:38,739 INFO L226 Difference]: Without dead ends: 591 [2021-12-16 01:15:38,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,755 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:38,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-16 01:15:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2021-12-16 01:15:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.5238095238095237) internal successors, (896), 588 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 896 transitions. [2021-12-16 01:15:38,787 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 896 transitions. Word has length 105 [2021-12-16 01:15:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:38,789 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 896 transitions. [2021-12-16 01:15:38,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 896 transitions. [2021-12-16 01:15:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:38,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,795 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] [2021-12-16 01:15:38,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:15:38,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1430042254, now seen corresponding path program 1 times [2021-12-16 01:15:38,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936957608] [2021-12-16 01:15:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:38,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936957608] [2021-12-16 01:15:38,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936957608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:38,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:38,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:38,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392282150] [2021-12-16 01:15:38,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:38,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:38,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:38,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,870 INFO L87 Difference]: Start difference. First operand 589 states and 896 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:38,907 INFO L93 Difference]: Finished difference Result 1585 states and 2474 transitions. [2021-12-16 01:15:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:38,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:38,915 INFO L225 Difference]: With dead ends: 1585 [2021-12-16 01:15:38,915 INFO L226 Difference]: Without dead ends: 1063 [2021-12-16 01:15:38,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:38,916 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 99 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:38,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-12-16 01:15:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2021-12-16 01:15:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5433962264150944) internal successors, (1636), 1060 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1636 transitions. [2021-12-16 01:15:38,957 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1636 transitions. Word has length 105 [2021-12-16 01:15:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:38,958 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1636 transitions. [2021-12-16 01:15:38,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1636 transitions. [2021-12-16 01:15:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:38,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:38,959 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] [2021-12-16 01:15:38,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:15:38,960 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2119342312, now seen corresponding path program 1 times [2021-12-16 01:15:38,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:38,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38028221] [2021-12-16 01:15:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:38,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:39,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38028221] [2021-12-16 01:15:39,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38028221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:39,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:39,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:39,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082400682] [2021-12-16 01:15:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:39,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:39,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:39,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:39,041 INFO L87 Difference]: Start difference. First operand 1061 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:39,082 INFO L93 Difference]: Finished difference Result 2953 states and 4614 transitions. [2021-12-16 01:15:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:39,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:39,089 INFO L225 Difference]: With dead ends: 2953 [2021-12-16 01:15:39,089 INFO L226 Difference]: Without dead ends: 1959 [2021-12-16 01:15:39,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:39,091 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 95 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:39,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 410 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-12-16 01:15:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2021-12-16 01:15:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 1.5480572597137015) internal successors, (3028), 1956 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3028 transitions. [2021-12-16 01:15:39,141 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3028 transitions. Word has length 105 [2021-12-16 01:15:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:39,141 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 3028 transitions. [2021-12-16 01:15:39,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3028 transitions. [2021-12-16 01:15:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:39,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:39,144 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] [2021-12-16 01:15:39,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:15:39,144 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 179311454, now seen corresponding path program 1 times [2021-12-16 01:15:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:39,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252098462] [2021-12-16 01:15:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:39,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:39,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:39,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252098462] [2021-12-16 01:15:39,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252098462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:39,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:39,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:39,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477954783] [2021-12-16 01:15:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:39,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:39,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:39,197 INFO L87 Difference]: Start difference. First operand 1957 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:39,257 INFO L93 Difference]: Finished difference Result 5545 states and 8630 transitions. [2021-12-16 01:15:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:39,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:39,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:39,267 INFO L225 Difference]: With dead ends: 5545 [2021-12-16 01:15:39,267 INFO L226 Difference]: Without dead ends: 3655 [2021-12-16 01:15:39,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:39,271 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:39,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 409 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-12-16 01:15:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3653. [2021-12-16 01:15:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 1.5432639649507118) internal successors, (5636), 3652 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5636 transitions. [2021-12-16 01:15:39,366 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5636 transitions. Word has length 105 [2021-12-16 01:15:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:39,367 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 5636 transitions. [2021-12-16 01:15:39,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5636 transitions. [2021-12-16 01:15:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:15:39,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:39,368 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] [2021-12-16 01:15:39,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:15:39,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:39,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1414973228, now seen corresponding path program 1 times [2021-12-16 01:15:39,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:39,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488357693] [2021-12-16 01:15:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:39,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:39,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:39,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488357693] [2021-12-16 01:15:39,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488357693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:39,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:39,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:15:39,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327755299] [2021-12-16 01:15:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:39,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:15:39,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:15:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:15:39,468 INFO L87 Difference]: Start difference. First operand 3653 states and 5636 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:40,830 INFO L93 Difference]: Finished difference Result 61029 states and 94740 transitions. [2021-12-16 01:15:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 01:15:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-16 01:15:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:40,990 INFO L225 Difference]: With dead ends: 61029 [2021-12-16 01:15:40,990 INFO L226 Difference]: Without dead ends: 57443 [2021-12-16 01:15:41,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-16 01:15:41,019 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 4682 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:41,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4682 Valid, 2170 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:15:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57443 states. [2021-12-16 01:15:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57443 to 7237. [2021-12-16 01:15:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7237 states, 7236 states have (on average 1.5306799336650083) internal successors, (11076), 7236 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 11076 transitions. [2021-12-16 01:15:41,669 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 11076 transitions. Word has length 105 [2021-12-16 01:15:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:41,669 INFO L470 AbstractCegarLoop]: Abstraction has 7237 states and 11076 transitions. [2021-12-16 01:15:41,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 11076 transitions. [2021-12-16 01:15:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 01:15:41,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:41,671 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] [2021-12-16 01:15:41,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:15:41,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 299673892, now seen corresponding path program 1 times [2021-12-16 01:15:41,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356715670] [2021-12-16 01:15:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:41,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:41,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356715670] [2021-12-16 01:15:41,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356715670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:41,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:41,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:41,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901136076] [2021-12-16 01:15:41,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:41,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:41,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:41,732 INFO L87 Difference]: Start difference. First operand 7237 states and 11076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:42,070 INFO L93 Difference]: Finished difference Result 17835 states and 27336 transitions. [2021-12-16 01:15:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:42,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-16 01:15:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:42,093 INFO L225 Difference]: With dead ends: 17835 [2021-12-16 01:15:42,093 INFO L226 Difference]: Without dead ends: 10665 [2021-12-16 01:15:42,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:42,100 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 75 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:42,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2021-12-16 01:15:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10663. [2021-12-16 01:15:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10663 states, 10662 states have (on average 1.5222284749577941) internal successors, (16230), 10662 states have internal predecessors, (16230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10663 states to 10663 states and 16230 transitions. [2021-12-16 01:15:42,525 INFO L78 Accepts]: Start accepts. Automaton has 10663 states and 16230 transitions. Word has length 107 [2021-12-16 01:15:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:42,525 INFO L470 AbstractCegarLoop]: Abstraction has 10663 states and 16230 transitions. [2021-12-16 01:15:42,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10663 states and 16230 transitions. [2021-12-16 01:15:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 01:15:42,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:42,527 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] [2021-12-16 01:15:42,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:15:42,527 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 366167404, now seen corresponding path program 1 times [2021-12-16 01:15:42,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:42,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897051696] [2021-12-16 01:15:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:42,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:42,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:42,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897051696] [2021-12-16 01:15:42,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897051696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:42,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:42,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:15:42,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529654857] [2021-12-16 01:15:42,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:42,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:15:42,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:42,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:15:42,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:15:42,794 INFO L87 Difference]: Start difference. First operand 10663 states and 16230 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:43,324 INFO L93 Difference]: Finished difference Result 21259 states and 32392 transitions. [2021-12-16 01:15:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:15:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-16 01:15:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:43,346 INFO L225 Difference]: With dead ends: 21259 [2021-12-16 01:15:43,346 INFO L226 Difference]: Without dead ends: 10665 [2021-12-16 01:15:43,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:15:43,360 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1024 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:43,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1064 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:15:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2021-12-16 01:15:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10663. [2021-12-16 01:15:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10663 states, 10662 states have (on average 1.5132245357343839) internal successors, (16134), 10662 states have internal predecessors, (16134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10663 states to 10663 states and 16134 transitions. [2021-12-16 01:15:43,724 INFO L78 Accepts]: Start accepts. Automaton has 10663 states and 16134 transitions. Word has length 107 [2021-12-16 01:15:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:43,725 INFO L470 AbstractCegarLoop]: Abstraction has 10663 states and 16134 transitions. [2021-12-16 01:15:43,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10663 states and 16134 transitions. [2021-12-16 01:15:43,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 01:15:43,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:43,727 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] [2021-12-16 01:15:43,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:15:43,727 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2139885816, now seen corresponding path program 1 times [2021-12-16 01:15:43,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:43,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816251520] [2021-12-16 01:15:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:43,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:43,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:43,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816251520] [2021-12-16 01:15:43,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816251520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:43,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:43,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:43,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953663491] [2021-12-16 01:15:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:43,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:43,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:43,771 INFO L87 Difference]: Start difference. First operand 10663 states and 16134 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:44,183 INFO L93 Difference]: Finished difference Result 30699 states and 46344 transitions. [2021-12-16 01:15:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-16 01:15:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:44,214 INFO L225 Difference]: With dead ends: 30699 [2021-12-16 01:15:44,215 INFO L226 Difference]: Without dead ends: 20105 [2021-12-16 01:15:44,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:44,229 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 83 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:44,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20105 states. [2021-12-16 01:15:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20105 to 20103. [2021-12-16 01:15:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20103 states, 20102 states have (on average 1.496666998308626) internal successors, (30086), 20102 states have internal predecessors, (30086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20103 states to 20103 states and 30086 transitions. [2021-12-16 01:15:45,018 INFO L78 Accepts]: Start accepts. Automaton has 20103 states and 30086 transitions. Word has length 107 [2021-12-16 01:15:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:45,018 INFO L470 AbstractCegarLoop]: Abstraction has 20103 states and 30086 transitions. [2021-12-16 01:15:45,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 20103 states and 30086 transitions. [2021-12-16 01:15:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 01:15:45,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:45,019 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] [2021-12-16 01:15:45,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:15:45,020 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -892378200, now seen corresponding path program 1 times [2021-12-16 01:15:45,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888565289] [2021-12-16 01:15:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:45,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:45,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:45,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888565289] [2021-12-16 01:15:45,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888565289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:45,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:45,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:15:45,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065294315] [2021-12-16 01:15:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:45,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:15:45,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:15:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:45,065 INFO L87 Difference]: Start difference. First operand 20103 states and 30086 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:46,059 INFO L93 Difference]: Finished difference Result 57867 states and 86280 transitions. [2021-12-16 01:15:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:15:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-16 01:15:46,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:46,120 INFO L225 Difference]: With dead ends: 57867 [2021-12-16 01:15:46,120 INFO L226 Difference]: Without dead ends: 37833 [2021-12-16 01:15:46,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:15:46,138 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 87 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:46,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37833 states. [2021-12-16 01:15:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37833 to 37831. [2021-12-16 01:15:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4770816812053926) internal successors, (55878), 37830 states have internal predecessors, (55878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55878 transitions. [2021-12-16 01:15:47,379 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55878 transitions. Word has length 107 [2021-12-16 01:15:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:47,379 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55878 transitions. [2021-12-16 01:15:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55878 transitions. [2021-12-16 01:15:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 01:15:47,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:47,380 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] [2021-12-16 01:15:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:15:47,381 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1948435132, now seen corresponding path program 1 times [2021-12-16 01:15:47,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:47,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318410647] [2021-12-16 01:15:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:47,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:47,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:47,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318410647] [2021-12-16 01:15:47,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318410647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:47,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:47,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:15:47,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153653563] [2021-12-16 01:15:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:47,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:15:47,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:15:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:15:47,448 INFO L87 Difference]: Start difference. First operand 37831 states and 55878 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:48,878 INFO L93 Difference]: Finished difference Result 75593 states and 111687 transitions. [2021-12-16 01:15:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:15:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-16 01:15:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:48,935 INFO L225 Difference]: With dead ends: 75593 [2021-12-16 01:15:48,935 INFO L226 Difference]: Without dead ends: 37831 [2021-12-16 01:15:48,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:15:48,973 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 731 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:48,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 241 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:15:48,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37831 states. [2021-12-16 01:15:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37831 to 37831. [2021-12-16 01:15:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4669310071371926) internal successors, (55494), 37830 states have internal predecessors, (55494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55494 transitions. [2021-12-16 01:15:50,519 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55494 transitions. Word has length 108 [2021-12-16 01:15:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:50,519 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55494 transitions. [2021-12-16 01:15:50,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55494 transitions. [2021-12-16 01:15:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 01:15:50,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:50,520 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] [2021-12-16 01:15:50,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:15:50,520 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1104429630, now seen corresponding path program 1 times [2021-12-16 01:15:50,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:50,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460238700] [2021-12-16 01:15:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:50,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:50,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460238700] [2021-12-16 01:15:50,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460238700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:50,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:50,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:15:50,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181871935] [2021-12-16 01:15:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:15:50,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:15:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:15:50,569 INFO L87 Difference]: Start difference. First operand 37831 states and 55494 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:52,051 INFO L93 Difference]: Finished difference Result 75593 states and 110919 transitions. [2021-12-16 01:15:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:15:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-16 01:15:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:52,101 INFO L225 Difference]: With dead ends: 75593 [2021-12-16 01:15:52,101 INFO L226 Difference]: Without dead ends: 37831 [2021-12-16 01:15:52,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:15:52,124 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 691 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:52,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 236 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:15:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37831 states. [2021-12-16 01:15:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37831 to 37831. [2021-12-16 01:15:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4567803330689928) internal successors, (55110), 37830 states have internal predecessors, (55110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55110 transitions. [2021-12-16 01:15:53,826 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55110 transitions. Word has length 108 [2021-12-16 01:15:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:53,827 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55110 transitions. [2021-12-16 01:15:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55110 transitions. [2021-12-16 01:15:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 01:15:53,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:53,828 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] [2021-12-16 01:15:53,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:15:53,828 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1806029504, now seen corresponding path program 1 times [2021-12-16 01:15:53,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:53,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122810198] [2021-12-16 01:15:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:53,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:15:53,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122810198] [2021-12-16 01:15:53,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122810198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:53,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:53,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:15:53,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073794726] [2021-12-16 01:15:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:53,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:15:53,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:15:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:15:53,898 INFO L87 Difference]: Start difference. First operand 37831 states and 55110 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:15:56,184 INFO L93 Difference]: Finished difference Result 69998 states and 101141 transitions. [2021-12-16 01:15:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:15:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-16 01:15:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:15:56,291 INFO L225 Difference]: With dead ends: 69998 [2021-12-16 01:15:56,291 INFO L226 Difference]: Without dead ends: 69996 [2021-12-16 01:15:56,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:15:56,311 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 328 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:15:56,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 777 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:15:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69996 states. [2021-12-16 01:15:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69996 to 39367. [2021-12-16 01:15:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39367 states, 39366 states have (on average 1.4357059391352944) internal successors, (56518), 39366 states have internal predecessors, (56518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39367 states to 39367 states and 56518 transitions. [2021-12-16 01:15:58,401 INFO L78 Accepts]: Start accepts. Automaton has 39367 states and 56518 transitions. Word has length 108 [2021-12-16 01:15:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:15:58,401 INFO L470 AbstractCegarLoop]: Abstraction has 39367 states and 56518 transitions. [2021-12-16 01:15:58,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:15:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 39367 states and 56518 transitions. [2021-12-16 01:15:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 01:15:58,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:15:58,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:15:58,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:15:58,421 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:15:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:15:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 150223880, now seen corresponding path program 1 times [2021-12-16 01:15:58,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:15:58,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057547533] [2021-12-16 01:15:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:15:58,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:15:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:15:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 01:15:58,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:15:58,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057547533] [2021-12-16 01:15:58,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057547533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:15:58,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:15:58,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:15:58,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626685101] [2021-12-16 01:15:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:15:58,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:15:58,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:15:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:15:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:15:58,533 INFO L87 Difference]: Start difference. First operand 39367 states and 56518 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:16:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:16:09,819 INFO L93 Difference]: Finished difference Result 361305 states and 518543 transitions. [2021-12-16 01:16:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:16:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-12-16 01:16:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:16:10,611 INFO L225 Difference]: With dead ends: 361305 [2021-12-16 01:16:10,611 INFO L226 Difference]: Without dead ends: 322007 [2021-12-16 01:16:10,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:16:10,713 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 3119 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:16:10,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3119 Valid, 1518 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:16:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322007 states. [2021-12-16 01:16:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322007 to 78663. [2021-12-16 01:16:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78663 states, 78662 states have (on average 1.4312120210520962) internal successors, (112582), 78662 states have internal predecessors, (112582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:16:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78663 states to 78663 states and 112582 transitions. [2021-12-16 01:16:16,315 INFO L78 Accepts]: Start accepts. Automaton has 78663 states and 112582 transitions. Word has length 148 [2021-12-16 01:16:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:16:16,316 INFO L470 AbstractCegarLoop]: Abstraction has 78663 states and 112582 transitions. [2021-12-16 01:16:16,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:16:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 78663 states and 112582 transitions. [2021-12-16 01:16:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-16 01:16:16,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:16:16,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:16:16,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 01:16:16,339 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:16:16,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:16:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1397731496, now seen corresponding path program 1 times [2021-12-16 01:16:16,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:16:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516825116] [2021-12-16 01:16:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:16:16,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:16:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:16:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-16 01:16:16,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:16:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516825116] [2021-12-16 01:16:16,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516825116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:16:16,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:16:16,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:16:16,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051634704] [2021-12-16 01:16:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:16:16,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:16:16,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:16:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:16:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:16:16,426 INFO L87 Difference]: Start difference. First operand 78663 states and 112582 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)