./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/eca-rers2012/Problem12_label51.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 c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 09:41:06,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 09:41:06,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 09:41:07,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 09:41:07,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 09:41:07,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 09:41:07,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 09:41:07,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 09:41:07,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 09:41:07,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 09:41:07,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 09:41:07,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 09:41:07,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 09:41:07,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 09:41:07,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 09:41:07,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 09:41:07,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 09:41:07,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 09:41:07,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 09:41:07,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 09:41:07,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 09:41:07,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 09:41:07,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 09:41:07,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 09:41:07,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 09:41:07,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 09:41:07,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 09:41:07,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 09:41:07,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 09:41:07,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 09:41:07,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 09:41:07,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 09:41:07,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 09:41:07,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 09:41:07,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 09:41:07,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 09:41:07,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 09:41:07,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 09:41:07,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 09:41:07,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 09:41:07,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 09:41:07,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 09:41:07,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 09:41:07,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 09:41:07,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 09:41:07,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 09:41:07,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 09:41:07,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 09:41:07,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 09:41:07,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 09:41:07,087 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 09:41:07,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 09:41:07,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 09:41:07,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 09:41:07,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 09:41:07,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:41:07,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 09:41:07,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 09:41:07,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 09:41:07,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 09:41:07,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 09:41:07,091 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 09:41:07,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 09:41:07,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 09:41:07,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 09:41:07,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 [2021-12-15 09:41:07,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 09:41:07,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 09:41:07,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 09:41:07,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 09:41:07,306 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 09:41:07,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2021-12-15 09:41:07,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe011f3b/5b1bf7f0e8fe485183aa557fa5bdd942/FLAG388251f65 [2021-12-15 09:41:07,953 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 09:41:07,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2021-12-15 09:41:07,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe011f3b/5b1bf7f0e8fe485183aa557fa5bdd942/FLAG388251f65 [2021-12-15 09:41:08,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbe011f3b/5b1bf7f0e8fe485183aa557fa5bdd942 [2021-12-15 09:41:08,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 09:41:08,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 09:41:08,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 09:41:08,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 09:41:08,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 09:41:08,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:41:08" (1/1) ... [2021-12-15 09:41:08,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44315b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:08, skipping insertion in model container [2021-12-15 09:41:08,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:41:08" (1/1) ... [2021-12-15 09:41:08,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 09:41:08,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 09:41:08,655 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/eca-rers2012/Problem12_label51.c[1794,1807] [2021-12-15 09:41:09,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:41:09,255 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 09:41:09,271 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/eca-rers2012/Problem12_label51.c[1794,1807] [2021-12-15 09:41:09,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 09:41:09,643 INFO L208 MainTranslator]: Completed translation [2021-12-15 09:41:09,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09 WrapperNode [2021-12-15 09:41:09,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 09:41:09,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 09:41:09,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 09:41:09,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 09:41:09,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:09,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:09,958 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-12-15 09:41:09,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 09:41:09,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 09:41:09,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 09:41:09,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 09:41:09,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:09,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:09,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:09,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:10,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:10,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:10,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:10,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 09:41:10,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 09:41:10,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 09:41:10,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 09:41:10,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (1/1) ... [2021-12-15 09:41:10,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 09:41:10,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:41:10,349 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) [2021-12-15 09:41:10,407 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 [2021-12-15 09:41:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 09:41:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 09:41:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 09:41:10,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 09:41:10,476 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 09:41:10,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 09:41:13,100 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 09:41:13,127 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 09:41:13,127 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 09:41:13,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:41:13 BoogieIcfgContainer [2021-12-15 09:41:13,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 09:41:13,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 09:41:13,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 09:41:13,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 09:41:13,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:41:08" (1/3) ... [2021-12-15 09:41:13,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e619ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:41:13, skipping insertion in model container [2021-12-15 09:41:13,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:41:09" (2/3) ... [2021-12-15 09:41:13,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e619ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:41:13, skipping insertion in model container [2021-12-15 09:41:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:41:13" (3/3) ... [2021-12-15 09:41:13,136 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2021-12-15 09:41:13,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 09:41:13,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 09:41:13,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 09:41:13,193 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 [2021-12-15 09:41:13,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 09:41:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2021-12-15 09:41:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 09:41:13,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:13,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:13,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2021-12-15 09:41:13,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957840717] [2021-12-15 09:41:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:13,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:41:13,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:13,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957840717] [2021-12-15 09:41:13,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957840717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:13,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:13,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:13,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780598275] [2021-12-15 09:41:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:13,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:41:13,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:41:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:41:13,420 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-15 09:41:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:18,130 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2021-12-15 09:41:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 09:41:18,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-15 09:41:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:18,158 INFO L225 Difference]: With dead ends: 3155 [2021-12-15 09:41:18,158 INFO L226 Difference]: Without dead ends: 2265 [2021-12-15 09:41:18,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:41:18,170 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 2469 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1724 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:18,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2469 Valid, 234 Invalid, 5458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1724 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-15 09:41:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2021-12-15 09:41:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2021-12-15 09:41:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 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) [2021-12-15 09:41:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2021-12-15 09:41:18,271 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 11 [2021-12-15 09:41:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:18,272 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2021-12-15 09:41:18,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-15 09:41:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2021-12-15 09:41:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-15 09:41:18,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:18,280 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:18,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 09:41:18,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:18,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1639014020, now seen corresponding path program 1 times [2021-12-15 09:41:18,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:18,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598037152] [2021-12-15 09:41:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:18,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:41:18,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598037152] [2021-12-15 09:41:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598037152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:18,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:18,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:18,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577605009] [2021-12-15 09:41:18,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:18,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 09:41:18,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:18,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 09:41:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:41:18,467 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-12-15 09:41:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:21,518 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2021-12-15 09:41:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 09:41:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2021-12-15 09:41:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:21,529 INFO L225 Difference]: With dead ends: 6051 [2021-12-15 09:41:21,529 INFO L226 Difference]: Without dead ends: 3759 [2021-12-15 09:41:21,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 09:41:21,532 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:21,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-15 09:41:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-12-15 09:41:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2021-12-15 09:41:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 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) [2021-12-15 09:41:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2021-12-15 09:41:21,574 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 151 [2021-12-15 09:41:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:21,576 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2021-12-15 09:41:21,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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) [2021-12-15 09:41:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2021-12-15 09:41:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-15 09:41:21,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:21,583 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-15 09:41:21,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 09:41:21,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1288793869, now seen corresponding path program 1 times [2021-12-15 09:41:21,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728637486] [2021-12-15 09:41:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:21,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-15 09:41:21,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:21,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728637486] [2021-12-15 09:41:21,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728637486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:21,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:21,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 09:41:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033690492] [2021-12-15 09:41:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:21,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:21,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:21,744 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-12-15 09:41:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:24,099 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2021-12-15 09:41:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 221 [2021-12-15 09:41:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:24,119 INFO L225 Difference]: With dead ends: 10520 [2021-12-15 09:41:24,119 INFO L226 Difference]: Without dead ends: 6763 [2021-12-15 09:41:24,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:24,129 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:24,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:41:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-12-15 09:41:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2021-12-15 09:41:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 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) [2021-12-15 09:41:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2021-12-15 09:41:24,215 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 221 [2021-12-15 09:41:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:24,217 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2021-12-15 09:41:24,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2021-12-15 09:41:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2021-12-15 09:41:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-15 09:41:24,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:24,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:24,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 09:41:24,220 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash 204077554, now seen corresponding path program 1 times [2021-12-15 09:41:24,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472997623] [2021-12-15 09:41:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:24,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-15 09:41:24,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472997623] [2021-12-15 09:41:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472997623] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 09:41:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480200469] [2021-12-15 09:41:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:24,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:41:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 09:41:24,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 09:41:24,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 09:41:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:24,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 09:41:24,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 09:41:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 09:41:24,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 09:41:24,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480200469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:24,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 09:41:24,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-15 09:41:24,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304722128] [2021-12-15 09:41:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:24,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:24,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:41:24,958 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-12-15 09:41:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:27,238 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2021-12-15 09:41:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 234 [2021-12-15 09:41:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:27,274 INFO L225 Difference]: With dead ends: 15026 [2021-12-15 09:41:27,274 INFO L226 Difference]: Without dead ends: 9016 [2021-12-15 09:41:27,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 09:41:27,283 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:27,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:41:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2021-12-15 09:41:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2021-12-15 09:41:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 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) [2021-12-15 09:41:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2021-12-15 09:41:27,387 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 234 [2021-12-15 09:41:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:27,388 INFO L470 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2021-12-15 09:41:27,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-12-15 09:41:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2021-12-15 09:41:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-15 09:41:27,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:27,390 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:27,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 09:41:27,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 09:41:27,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 740515512, now seen corresponding path program 1 times [2021-12-15 09:41:27,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:27,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132810080] [2021-12-15 09:41:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:27,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-15 09:41:27,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:27,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132810080] [2021-12-15 09:41:27,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132810080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:27,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:27,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:27,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2456533] [2021-12-15 09:41:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:27,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:27,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:27,673 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-12-15 09:41:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:30,443 INFO L93 Difference]: Finished difference Result 25540 states and 32713 transitions. [2021-12-15 09:41:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 251 [2021-12-15 09:41:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:30,477 INFO L225 Difference]: With dead ends: 25540 [2021-12-15 09:41:30,477 INFO L226 Difference]: Without dead ends: 16526 [2021-12-15 09:41:30,487 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 [2021-12-15 09:41:30,488 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 747 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:30,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 1325 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-15 09:41:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2021-12-15 09:41:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2021-12-15 09:41:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2523773297831875) internal successors, (19755), 15774 states have internal predecessors, (19755), 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) [2021-12-15 09:41:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19755 transitions. [2021-12-15 09:41:30,690 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19755 transitions. Word has length 251 [2021-12-15 09:41:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:30,690 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 19755 transitions. [2021-12-15 09:41:30,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-12-15 09:41:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19755 transitions. [2021-12-15 09:41:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-15 09:41:30,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:30,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 09:41:30,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 09:41:30,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1242291383, now seen corresponding path program 1 times [2021-12-15 09:41:30,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:30,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201773046] [2021-12-15 09:41:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:30,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-15 09:41:30,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:30,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201773046] [2021-12-15 09:41:30,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201773046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:30,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:30,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:30,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7797084] [2021-12-15 09:41:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:30,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:30,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:30,852 INFO L87 Difference]: Start difference. First operand 15775 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2021-12-15 09:41:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:32,944 INFO L93 Difference]: Finished difference Result 38307 states and 48288 transitions. [2021-12-15 09:41:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 300 [2021-12-15 09:41:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:33,139 INFO L225 Difference]: With dead ends: 38307 [2021-12-15 09:41:33,141 INFO L226 Difference]: Without dead ends: 22534 [2021-12-15 09:41:33,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:33,152 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:33,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-15 09:41:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2021-12-15 09:41:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2021-12-15 09:41:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2340567168153376) internal successors, (27807), 22533 states have internal predecessors, (27807), 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) [2021-12-15 09:41:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27807 transitions. [2021-12-15 09:41:33,343 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27807 transitions. Word has length 300 [2021-12-15 09:41:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:33,345 INFO L470 AbstractCegarLoop]: Abstraction has 22534 states and 27807 transitions. [2021-12-15 09:41:33,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2021-12-15 09:41:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27807 transitions. [2021-12-15 09:41:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-15 09:41:33,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:33,348 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 09:41:33,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 09:41:33,349 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:33,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1251201758, now seen corresponding path program 1 times [2021-12-15 09:41:33,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:33,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419118538] [2021-12-15 09:41:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:33,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-15 09:41:33,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:33,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419118538] [2021-12-15 09:41:33,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419118538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:33,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:33,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:33,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528720136] [2021-12-15 09:41:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:33,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:33,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:33,425 INFO L87 Difference]: Start difference. First operand 22534 states and 27807 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2021-12-15 09:41:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:35,744 INFO L93 Difference]: Finished difference Result 45066 states and 55612 transitions. [2021-12-15 09:41:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 305 [2021-12-15 09:41:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:35,779 INFO L225 Difference]: With dead ends: 45066 [2021-12-15 09:41:35,780 INFO L226 Difference]: Without dead ends: 22534 [2021-12-15 09:41:35,798 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 [2021-12-15 09:41:35,799 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 737 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:35,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 187 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:41:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2021-12-15 09:41:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2021-12-15 09:41:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2210091865264279) internal successors, (27513), 22533 states have internal predecessors, (27513), 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) [2021-12-15 09:41:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27513 transitions. [2021-12-15 09:41:36,012 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27513 transitions. Word has length 305 [2021-12-15 09:41:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:36,013 INFO L470 AbstractCegarLoop]: Abstraction has 22534 states and 27513 transitions. [2021-12-15 09:41:36,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2021-12-15 09:41:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27513 transitions. [2021-12-15 09:41:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-15 09:41:36,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:36,018 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 09:41:36,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 09:41:36,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 297079586, now seen corresponding path program 1 times [2021-12-15 09:41:36,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:36,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241410618] [2021-12-15 09:41:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:36,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-15 09:41:36,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:36,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241410618] [2021-12-15 09:41:36,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241410618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:36,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:36,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:36,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059217872] [2021-12-15 09:41:36,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:36,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:36,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:36,189 INFO L87 Difference]: Start difference. First operand 22534 states and 27513 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-12-15 09:41:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:38,546 INFO L93 Difference]: Finished difference Result 60837 states and 75395 transitions. [2021-12-15 09:41:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 316 [2021-12-15 09:41:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:38,587 INFO L225 Difference]: With dead ends: 60837 [2021-12-15 09:41:38,588 INFO L226 Difference]: Without dead ends: 38305 [2021-12-15 09:41:38,606 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 [2021-12-15 09:41:38,607 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 722 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:38,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 424 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:41:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2021-12-15 09:41:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 38305. [2021-12-15 09:41:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38305 states, 38304 states have (on average 1.2043650793650793) internal successors, (46132), 38304 states have internal predecessors, (46132), 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) [2021-12-15 09:41:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38305 states to 38305 states and 46132 transitions. [2021-12-15 09:41:38,957 INFO L78 Accepts]: Start accepts. Automaton has 38305 states and 46132 transitions. Word has length 316 [2021-12-15 09:41:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:38,958 INFO L470 AbstractCegarLoop]: Abstraction has 38305 states and 46132 transitions. [2021-12-15 09:41:38,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-12-15 09:41:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 38305 states and 46132 transitions. [2021-12-15 09:41:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-15 09:41:38,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:38,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:38,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 09:41:38,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1344940876, now seen corresponding path program 1 times [2021-12-15 09:41:38,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:38,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845146901] [2021-12-15 09:41:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:38,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-15 09:41:39,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:39,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845146901] [2021-12-15 09:41:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845146901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:39,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:39,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:39,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983144480] [2021-12-15 09:41:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:39,063 INFO L87 Difference]: Start difference. First operand 38305 states and 46132 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-12-15 09:41:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:41,615 INFO L93 Difference]: Finished difference Result 86371 states and 103227 transitions. [2021-12-15 09:41:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 342 [2021-12-15 09:41:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:41,670 INFO L225 Difference]: With dead ends: 86371 [2021-12-15 09:41:41,670 INFO L226 Difference]: Without dead ends: 48068 [2021-12-15 09:41:41,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:41,698 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 857 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:41,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 909 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-15 09:41:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48068 states. [2021-12-15 09:41:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48068 to 45064. [2021-12-15 09:41:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.1590218139049775) internal successors, (52229), 45063 states have internal predecessors, (52229), 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) [2021-12-15 09:41:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 52229 transitions. [2021-12-15 09:41:42,175 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 52229 transitions. Word has length 342 [2021-12-15 09:41:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:42,175 INFO L470 AbstractCegarLoop]: Abstraction has 45064 states and 52229 transitions. [2021-12-15 09:41:42,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-12-15 09:41:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 52229 transitions. [2021-12-15 09:41:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2021-12-15 09:41:42,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:42,183 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 09:41:42,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 09:41:42,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash -808675263, now seen corresponding path program 1 times [2021-12-15 09:41:42,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:42,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364344796] [2021-12-15 09:41:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:42,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-15 09:41:42,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:42,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364344796] [2021-12-15 09:41:42,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364344796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:42,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:42,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:42,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716608764] [2021-12-15 09:41:42,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:42,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:42,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:42,331 INFO L87 Difference]: Start difference. First operand 45064 states and 52229 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2021-12-15 09:41:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:44,729 INFO L93 Difference]: Finished difference Result 106648 states and 123069 transitions. [2021-12-15 09:41:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:44,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 482 [2021-12-15 09:41:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:44,803 INFO L225 Difference]: With dead ends: 106648 [2021-12-15 09:41:44,804 INFO L226 Difference]: Without dead ends: 61586 [2021-12-15 09:41:44,849 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 [2021-12-15 09:41:44,850 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 618 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:44,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1315 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 09:41:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2021-12-15 09:41:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 57831. [2021-12-15 09:41:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57831 states, 57830 states have (on average 1.1325090783330451) internal successors, (65493), 57830 states have internal predecessors, (65493), 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) [2021-12-15 09:41:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57831 states to 57831 states and 65493 transitions. [2021-12-15 09:41:45,360 INFO L78 Accepts]: Start accepts. Automaton has 57831 states and 65493 transitions. Word has length 482 [2021-12-15 09:41:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:45,361 INFO L470 AbstractCegarLoop]: Abstraction has 57831 states and 65493 transitions. [2021-12-15 09:41:45,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2021-12-15 09:41:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 57831 states and 65493 transitions. [2021-12-15 09:41:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-12-15 09:41:45,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:45,374 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:45,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 09:41:45,374 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:45,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279612, now seen corresponding path program 1 times [2021-12-15 09:41:45,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:45,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153830582] [2021-12-15 09:41:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:45,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-15 09:41:45,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:45,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153830582] [2021-12-15 09:41:45,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153830582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:45,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:45,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:45,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729596769] [2021-12-15 09:41:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:45,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:45,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:45,495 INFO L87 Difference]: Start difference. First operand 57831 states and 65493 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2021-12-15 09:41:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:48,329 INFO L93 Difference]: Finished difference Result 135186 states and 153743 transitions. [2021-12-15 09:41:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 527 [2021-12-15 09:41:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:48,440 INFO L225 Difference]: With dead ends: 135186 [2021-12-15 09:41:48,441 INFO L226 Difference]: Without dead ends: 77357 [2021-12-15 09:41:48,481 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 [2021-12-15 09:41:48,481 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:48,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1267 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-15 09:41:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77357 states. [2021-12-15 09:41:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77357 to 74353. [2021-12-15 09:41:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74353 states, 74352 states have (on average 1.1192704970949) internal successors, (83220), 74352 states have internal predecessors, (83220), 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) [2021-12-15 09:41:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74353 states to 74353 states and 83220 transitions. [2021-12-15 09:41:49,284 INFO L78 Accepts]: Start accepts. Automaton has 74353 states and 83220 transitions. Word has length 527 [2021-12-15 09:41:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:49,285 INFO L470 AbstractCegarLoop]: Abstraction has 74353 states and 83220 transitions. [2021-12-15 09:41:49,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2021-12-15 09:41:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 74353 states and 83220 transitions. [2021-12-15 09:41:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-12-15 09:41:49,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:49,299 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 09:41:49,299 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2553455, now seen corresponding path program 1 times [2021-12-15 09:41:49,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991237218] [2021-12-15 09:41:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:49,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2021-12-15 09:41:49,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:49,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991237218] [2021-12-15 09:41:49,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991237218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:49,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:49,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:49,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290410003] [2021-12-15 09:41:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:49,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:49,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:49,670 INFO L87 Difference]: Start difference. First operand 74353 states and 83220 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-12-15 09:41:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:52,332 INFO L93 Difference]: Finished difference Result 180246 states and 201480 transitions. [2021-12-15 09:41:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 573 [2021-12-15 09:41:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:52,478 INFO L225 Difference]: With dead ends: 180246 [2021-12-15 09:41:52,478 INFO L226 Difference]: Without dead ends: 105895 [2021-12-15 09:41:52,529 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 [2021-12-15 09:41:52,530 INFO L933 BasicCegarLoop]: 1304 mSDtfsCounter, 751 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:52,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 1312 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:41:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2021-12-15 09:41:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 97634. [2021-12-15 09:41:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97634 states, 97633 states have (on average 1.1168559810719736) internal successors, (109042), 97633 states have internal predecessors, (109042), 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) [2021-12-15 09:41:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97634 states to 97634 states and 109042 transitions. [2021-12-15 09:41:53,828 INFO L78 Accepts]: Start accepts. Automaton has 97634 states and 109042 transitions. Word has length 573 [2021-12-15 09:41:53,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:53,847 INFO L470 AbstractCegarLoop]: Abstraction has 97634 states and 109042 transitions. [2021-12-15 09:41:53,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-12-15 09:41:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 97634 states and 109042 transitions. [2021-12-15 09:41:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2021-12-15 09:41:53,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:53,861 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:41:53,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 09:41:53,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2019939621, now seen corresponding path program 1 times [2021-12-15 09:41:53,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:53,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000598825] [2021-12-15 09:41:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:53,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-15 09:41:54,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:54,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000598825] [2021-12-15 09:41:54,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000598825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:54,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558556952] [2021-12-15 09:41:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:54,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:54,009 INFO L87 Difference]: Start difference. First operand 97634 states and 109042 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2021-12-15 09:41:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:41:56,732 INFO L93 Difference]: Finished difference Result 200523 states and 223413 transitions. [2021-12-15 09:41:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:41:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 599 [2021-12-15 09:41:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:41:56,865 INFO L225 Difference]: With dead ends: 200523 [2021-12-15 09:41:56,865 INFO L226 Difference]: Without dead ends: 102140 [2021-12-15 09:41:56,910 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 [2021-12-15 09:41:56,912 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 545 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:41:56,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1038 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:41:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102140 states. [2021-12-15 09:41:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102140 to 97634. [2021-12-15 09:41:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97634 states, 97633 states have (on average 1.1022297788657525) internal successors, (107614), 97633 states have internal predecessors, (107614), 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) [2021-12-15 09:41:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97634 states to 97634 states and 107614 transitions. [2021-12-15 09:41:58,333 INFO L78 Accepts]: Start accepts. Automaton has 97634 states and 107614 transitions. Word has length 599 [2021-12-15 09:41:58,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:41:58,334 INFO L470 AbstractCegarLoop]: Abstraction has 97634 states and 107614 transitions. [2021-12-15 09:41:58,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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) [2021-12-15 09:41:58,334 INFO L276 IsEmpty]: Start isEmpty. Operand 97634 states and 107614 transitions. [2021-12-15 09:41:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2021-12-15 09:41:58,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:41:58,358 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-15 09:41:58,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 09:41:58,358 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:41:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:41:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash -75567165, now seen corresponding path program 1 times [2021-12-15 09:41:58,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:41:58,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44630960] [2021-12-15 09:41:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:41:58,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:41:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:41:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-12-15 09:41:58,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:41:58,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44630960] [2021-12-15 09:41:58,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44630960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:41:58,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:41:58,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:41:58,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170103762] [2021-12-15 09:41:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:41:58,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:41:58,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:41:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:41:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:41:58,512 INFO L87 Difference]: Start difference. First operand 97634 states and 107614 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2021-12-15 09:42:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:42:01,259 INFO L93 Difference]: Finished difference Result 195266 states and 215352 transitions. [2021-12-15 09:42:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:42:01,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 640 [2021-12-15 09:42:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:42:01,393 INFO L225 Difference]: With dead ends: 195266 [2021-12-15 09:42:01,393 INFO L226 Difference]: Without dead ends: 98385 [2021-12-15 09:42:01,431 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 [2021-12-15 09:42:01,432 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 730 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-15 09:42:01,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 1136 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-15 09:42:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98385 states. [2021-12-15 09:42:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98385 to 98385. [2021-12-15 09:42:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98385 states, 98384 states have (on average 1.0828183444462514) internal successors, (106532), 98384 states have internal predecessors, (106532), 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) [2021-12-15 09:42:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98385 states to 98385 states and 106532 transitions. [2021-12-15 09:42:02,895 INFO L78 Accepts]: Start accepts. Automaton has 98385 states and 106532 transitions. Word has length 640 [2021-12-15 09:42:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:42:02,895 INFO L470 AbstractCegarLoop]: Abstraction has 98385 states and 106532 transitions. [2021-12-15 09:42:02,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2021-12-15 09:42:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 98385 states and 106532 transitions. [2021-12-15 09:42:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2021-12-15 09:42:02,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:42:02,960 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:42:02,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 09:42:02,961 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:42:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:42:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash -206997091, now seen corresponding path program 1 times [2021-12-15 09:42:02,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:42:02,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15379991] [2021-12-15 09:42:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:42:02,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:42:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:42:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-15 09:42:03,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:42:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15379991] [2021-12-15 09:42:03,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15379991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:42:03,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:42:03,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:42:03,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990686023] [2021-12-15 09:42:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:42:03,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:42:03,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:42:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:42:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:42:03,185 INFO L87 Difference]: Start difference. First operand 98385 states and 106532 transitions. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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) [2021-12-15 09:42:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:42:06,202 INFO L93 Difference]: Finished difference Result 217045 states and 235209 transitions. [2021-12-15 09:42:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:42:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 1032 [2021-12-15 09:42:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:42:06,379 INFO L225 Difference]: With dead ends: 217045 [2021-12-15 09:42:06,380 INFO L226 Difference]: Without dead ends: 119413 [2021-12-15 09:42:06,425 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 [2021-12-15 09:42:06,425 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 568 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-15 09:42:06,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 1283 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-15 09:42:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2021-12-15 09:42:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2021-12-15 09:42:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0693501993018035) internal successors, (125284), 117159 states have internal predecessors, (125284), 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) [2021-12-15 09:42:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 125284 transitions. [2021-12-15 09:42:08,060 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 125284 transitions. Word has length 1032 [2021-12-15 09:42:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 09:42:08,060 INFO L470 AbstractCegarLoop]: Abstraction has 117160 states and 125284 transitions. [2021-12-15 09:42:08,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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) [2021-12-15 09:42:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 125284 transitions. [2021-12-15 09:42:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2021-12-15 09:42:08,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 09:42:08,120 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 09:42:08,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 09:42:08,120 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 09:42:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 09:42:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1714270292, now seen corresponding path program 1 times [2021-12-15 09:42:08,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 09:42:08,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150345048] [2021-12-15 09:42:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 09:42:08,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 09:42:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 09:42:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-15 09:42:08,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 09:42:08,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150345048] [2021-12-15 09:42:08,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150345048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 09:42:08,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 09:42:08,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 09:42:08,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102205584] [2021-12-15 09:42:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 09:42:08,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 09:42:08,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 09:42:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 09:42:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 09:42:08,300 INFO L87 Difference]: Start difference. First operand 117160 states and 125284 transitions. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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) [2021-12-15 09:42:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 09:42:10,911 INFO L93 Difference]: Finished difference Result 235820 states and 252078 transitions. [2021-12-15 09:42:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 09:42:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 1041 [2021-12-15 09:42:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 09:42:11,062 INFO L225 Difference]: With dead ends: 235820 [2021-12-15 09:42:11,063 INFO L226 Difference]: Without dead ends: 119413 [2021-12-15 09:42:11,118 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 [2021-12-15 09:42:11,119 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 793 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-15 09:42:11,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 232 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-15 09:42:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states.