./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.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 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:19:32,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:19:32,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:19:32,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:19:32,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:19:32,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:19:32,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:19:32,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:19:32,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:19:32,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:19:32,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:19:32,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:19:32,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:19:32,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:19:32,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:19:32,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:19:32,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:19:32,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:19:32,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:19:32,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:19:32,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:19:32,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:19:32,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:19:32,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:19:32,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:19:32,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:19:32,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:19:32,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:19:32,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:19:32,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:19:32,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:19:32,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:19:32,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:19:32,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:19:32,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:19:32,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:19:32,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:19:32,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:19:32,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:19:32,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:19:32,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:19:32,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:19:33,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:19:33,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:19:33,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:19:33,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:19:33,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:19:33,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:19:33,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:19:33,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:19:33,031 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:19:33,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:19:33,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:19:33,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:19:33,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:19:33,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:19:33,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:19:33,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:19:33,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:19:33,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:19:33,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:19:33,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:19:33,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:19:33,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:19:33,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:19:33,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:19:33,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:19:33,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:19:33,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:19:33,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:19:33,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:19:33,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:19:33,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:19:33,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:19:33,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:19:33,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:19:33,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 [2021-12-17 16:19:33,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:19:33,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:19:33,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:19:33,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:19:33,323 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:19:33,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-17 16:19:33,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/328730186/a42794d6fafd4ca68603ac1f7510f0ee/FLAGc2b526070 [2021-12-17 16:19:33,882 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:19:33,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-17 16:19:33,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/328730186/a42794d6fafd4ca68603ac1f7510f0ee/FLAGc2b526070 [2021-12-17 16:19:34,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/328730186/a42794d6fafd4ca68603ac1f7510f0ee [2021-12-17 16:19:34,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:19:34,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:19:34,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:19:34,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:19:34,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:19:34,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:34,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fa19a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34, skipping insertion in model container [2021-12-17 16:19:34,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:34,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:19:34,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:19:34,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2021-12-17 16:19:34,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:19:34,842 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:19:34,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2021-12-17 16:19:34,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:19:34,988 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:19:34,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34 WrapperNode [2021-12-17 16:19:34,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:19:34,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:19:34,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:19:34,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:19:34,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,076 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 933 [2021-12-17 16:19:35,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:19:35,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:19:35,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:19:35,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:19:35,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:19:35,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:19:35,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:19:35,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:19:35,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (1/1) ... [2021-12-17 16:19:35,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:19:35,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:19:35,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:19:35,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:19:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:19:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:19:35,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:19:35,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:19:35,330 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:19:35,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:19:36,010 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:19:36,018 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:19:36,019 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:19:36,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:19:36 BoogieIcfgContainer [2021-12-17 16:19:36,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:19:36,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:19:36,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:19:36,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:19:36,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:19:34" (1/3) ... [2021-12-17 16:19:36,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c17c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:19:36, skipping insertion in model container [2021-12-17 16:19:36,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:19:34" (2/3) ... [2021-12-17 16:19:36,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c17c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:19:36, skipping insertion in model container [2021-12-17 16:19:36,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:19:36" (3/3) ... [2021-12-17 16:19:36,028 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-17 16:19:36,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:19:36,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 16:19:36,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:19:36,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:19:36,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 16:19:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 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) [2021-12-17 16:19:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:19:36,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:36,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:36,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 680840216, now seen corresponding path program 1 times [2021-12-17 16:19:36,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:36,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532761292] [2021-12-17 16:19:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:36,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:36,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532761292] [2021-12-17 16:19:36,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532761292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:36,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:36,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:19:36,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950956757] [2021-12-17 16:19:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:36,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:19:36,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:19:36,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:19:36,638 INFO L87 Difference]: Start difference. First operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 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 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2021-12-17 16:19:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:37,005 INFO L93 Difference]: Finished difference Result 1120 states and 1817 transitions. [2021-12-17 16:19:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:19:37,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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 96 [2021-12-17 16:19:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:37,030 INFO L225 Difference]: With dead ends: 1120 [2021-12-17 16:19:37,030 INFO L226 Difference]: Without dead ends: 984 [2021-12-17 16:19:37,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:19:37,040 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 4180 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4180 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4180 Valid, 3700 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:19:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-12-17 16:19:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 382. [2021-12-17 16:19:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4986876640419948) internal successors, (571), 381 states have internal predecessors, (571), 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) [2021-12-17 16:19:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 571 transitions. [2021-12-17 16:19:37,142 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 571 transitions. Word has length 96 [2021-12-17 16:19:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:37,143 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 571 transitions. [2021-12-17 16:19:37,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2021-12-17 16:19:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 571 transitions. [2021-12-17 16:19:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:19:37,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:37,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:37,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:19:37,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -693931319, now seen corresponding path program 1 times [2021-12-17 16:19:37,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:37,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826545853] [2021-12-17 16:19:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:37,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:37,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:37,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826545853] [2021-12-17 16:19:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826545853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:37,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:37,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:19:37,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355752751] [2021-12-17 16:19:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:37,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:19:37,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:19:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:19:37,432 INFO L87 Difference]: Start difference. First operand 382 states and 571 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2021-12-17 16:19:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:37,830 INFO L93 Difference]: Finished difference Result 1909 states and 2955 transitions. [2021-12-17 16:19:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:19:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 97 [2021-12-17 16:19:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:37,841 INFO L225 Difference]: With dead ends: 1909 [2021-12-17 16:19:37,841 INFO L226 Difference]: Without dead ends: 1623 [2021-12-17 16:19:37,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:19:37,850 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 1678 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:37,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 2372 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:19:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-12-17 16:19:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1613. [2021-12-17 16:19:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.5446650124069479) internal successors, (2490), 1612 states have internal predecessors, (2490), 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) [2021-12-17 16:19:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2490 transitions. [2021-12-17 16:19:37,946 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2490 transitions. Word has length 97 [2021-12-17 16:19:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:37,946 INFO L470 AbstractCegarLoop]: Abstraction has 1613 states and 2490 transitions. [2021-12-17 16:19:37,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2021-12-17 16:19:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2490 transitions. [2021-12-17 16:19:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:19:37,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:37,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:37,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:19:37,950 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1453946111, now seen corresponding path program 1 times [2021-12-17 16:19:37,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:37,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530994342] [2021-12-17 16:19:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:37,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:38,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:38,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530994342] [2021-12-17 16:19:38,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530994342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:38,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:38,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:38,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328215218] [2021-12-17 16:19:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:38,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:38,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:38,034 INFO L87 Difference]: Start difference. First operand 1613 states and 2490 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:38,433 INFO L93 Difference]: Finished difference Result 4341 states and 6773 transitions. [2021-12-17 16:19:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:38,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-12-17 16:19:38,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:38,445 INFO L225 Difference]: With dead ends: 4341 [2021-12-17 16:19:38,445 INFO L226 Difference]: Without dead ends: 2815 [2021-12-17 16:19:38,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:38,453 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1363 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:38,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 344 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-12-17 16:19:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2813. [2021-12-17 16:19:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 1.5526315789473684) internal successors, (4366), 2812 states have internal predecessors, (4366), 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) [2021-12-17 16:19:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4366 transitions. [2021-12-17 16:19:38,621 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4366 transitions. Word has length 98 [2021-12-17 16:19:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:38,622 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 4366 transitions. [2021-12-17 16:19:38,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4366 transitions. [2021-12-17 16:19:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:19:38,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:38,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:38,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:19:38,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1726044558, now seen corresponding path program 1 times [2021-12-17 16:19:38,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:38,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718051958] [2021-12-17 16:19:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:38,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:38,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718051958] [2021-12-17 16:19:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718051958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:38,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:38,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:38,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969899359] [2021-12-17 16:19:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:38,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:38,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:38,748 INFO L87 Difference]: Start difference. First operand 2813 states and 4366 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:39,229 INFO L93 Difference]: Finished difference Result 7797 states and 12184 transitions. [2021-12-17 16:19:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-12-17 16:19:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:39,250 INFO L225 Difference]: With dead ends: 7797 [2021-12-17 16:19:39,250 INFO L226 Difference]: Without dead ends: 5101 [2021-12-17 16:19:39,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:39,255 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1325 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:39,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 346 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-12-17 16:19:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5099. [2021-12-17 16:19:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 1.5545311887014515) internal successors, (7925), 5098 states have internal predecessors, (7925), 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) [2021-12-17 16:19:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 7925 transitions. [2021-12-17 16:19:39,524 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 7925 transitions. Word has length 98 [2021-12-17 16:19:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:39,525 INFO L470 AbstractCegarLoop]: Abstraction has 5099 states and 7925 transitions. [2021-12-17 16:19:39,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 7925 transitions. [2021-12-17 16:19:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:19:39,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:39,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:39,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:19:39,529 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1050081644, now seen corresponding path program 1 times [2021-12-17 16:19:39,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827493024] [2021-12-17 16:19:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:39,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:39,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:39,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827493024] [2021-12-17 16:19:39,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827493024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:39,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:39,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:39,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167656731] [2021-12-17 16:19:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:39,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:39,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:39,651 INFO L87 Difference]: Start difference. First operand 5099 states and 7925 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:40,327 INFO L93 Difference]: Finished difference Result 14365 states and 22445 transitions. [2021-12-17 16:19:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-12-17 16:19:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:40,365 INFO L225 Difference]: With dead ends: 14365 [2021-12-17 16:19:40,365 INFO L226 Difference]: Without dead ends: 9461 [2021-12-17 16:19:40,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:40,376 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1277 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:40,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 359 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2021-12-17 16:19:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2021-12-17 16:19:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 9458 states have (on average 1.5558257559737787) internal successors, (14715), 9458 states have internal predecessors, (14715), 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) [2021-12-17 16:19:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 14715 transitions. [2021-12-17 16:19:40,936 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 14715 transitions. Word has length 98 [2021-12-17 16:19:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:40,937 INFO L470 AbstractCegarLoop]: Abstraction has 9459 states and 14715 transitions. [2021-12-17 16:19:40,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 14715 transitions. [2021-12-17 16:19:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:19:40,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:40,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:40,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:19:40,941 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1204309923, now seen corresponding path program 1 times [2021-12-17 16:19:40,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:40,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37347348] [2021-12-17 16:19:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:41,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:41,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37347348] [2021-12-17 16:19:41,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37347348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:41,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:41,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:41,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530763283] [2021-12-17 16:19:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:41,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:41,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:41,003 INFO L87 Difference]: Start difference. First operand 9459 states and 14715 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:42,068 INFO L93 Difference]: Finished difference Result 27518 states and 42910 transitions. [2021-12-17 16:19:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:42,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-12-17 16:19:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:42,143 INFO L225 Difference]: With dead ends: 27518 [2021-12-17 16:19:42,143 INFO L226 Difference]: Without dead ends: 18213 [2021-12-17 16:19:42,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:42,167 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1281 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:42,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 348 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2021-12-17 16:19:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 18211. [2021-12-17 16:19:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 18210 states have (on average 1.5523887973640857) internal successors, (28269), 18210 states have internal predecessors, (28269), 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) [2021-12-17 16:19:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 28269 transitions. [2021-12-17 16:19:43,273 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 28269 transitions. Word has length 98 [2021-12-17 16:19:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:43,273 INFO L470 AbstractCegarLoop]: Abstraction has 18211 states and 28269 transitions. [2021-12-17 16:19:43,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 28269 transitions. [2021-12-17 16:19:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:19:43,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:43,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:43,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:19:43,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1872069296, now seen corresponding path program 1 times [2021-12-17 16:19:43,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:43,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645654461] [2021-12-17 16:19:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:43,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:43,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645654461] [2021-12-17 16:19:43,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645654461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:43,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:43,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:43,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409512073] [2021-12-17 16:19:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:43,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:43,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:43,345 INFO L87 Difference]: Start difference. First operand 18211 states and 28269 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:44,973 INFO L93 Difference]: Finished difference Result 54168 states and 84194 transitions. [2021-12-17 16:19:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:44,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-12-17 16:19:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:45,081 INFO L225 Difference]: With dead ends: 54168 [2021-12-17 16:19:45,082 INFO L226 Difference]: Without dead ends: 36021 [2021-12-17 16:19:45,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:45,120 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1367 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:45,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 344 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36021 states. [2021-12-17 16:19:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36021 to 36019. [2021-12-17 16:19:46,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36019 states, 36018 states have (on average 1.5457271364317842) internal successors, (55674), 36018 states have internal predecessors, (55674), 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) [2021-12-17 16:19:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36019 states to 36019 states and 55674 transitions. [2021-12-17 16:19:47,012 INFO L78 Accepts]: Start accepts. Automaton has 36019 states and 55674 transitions. Word has length 98 [2021-12-17 16:19:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:47,013 INFO L470 AbstractCegarLoop]: Abstraction has 36019 states and 55674 transitions. [2021-12-17 16:19:47,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-12-17 16:19:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 36019 states and 55674 transitions. [2021-12-17 16:19:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:19:47,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:47,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:47,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:19:47,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:47,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash 944001903, now seen corresponding path program 1 times [2021-12-17 16:19:47,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:47,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038725901] [2021-12-17 16:19:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:47,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:47,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038725901] [2021-12-17 16:19:47,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038725901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:47,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:47,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:19:47,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356150038] [2021-12-17 16:19:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:47,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:47,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:47,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:47,082 INFO L87 Difference]: Start difference. First operand 36019 states and 55674 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-12-17 16:19:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:49,753 INFO L93 Difference]: Finished difference Result 102359 states and 158350 transitions. [2021-12-17 16:19:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:19:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 99 [2021-12-17 16:19:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:49,958 INFO L225 Difference]: With dead ends: 102359 [2021-12-17 16:19:49,958 INFO L226 Difference]: Without dead ends: 66420 [2021-12-17 16:19:50,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:50,032 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1400 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:50,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 347 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:19:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2021-12-17 16:19:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 66418. [2021-12-17 16:19:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66418 states, 66417 states have (on average 1.541472815694777) internal successors, (102380), 66417 states have internal predecessors, (102380), 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) [2021-12-17 16:19:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66418 states to 66418 states and 102380 transitions. [2021-12-17 16:19:53,237 INFO L78 Accepts]: Start accepts. Automaton has 66418 states and 102380 transitions. Word has length 99 [2021-12-17 16:19:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:53,237 INFO L470 AbstractCegarLoop]: Abstraction has 66418 states and 102380 transitions. [2021-12-17 16:19:53,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2021-12-17 16:19:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 66418 states and 102380 transitions. [2021-12-17 16:19:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:19:53,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:53,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:53,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:19:53,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:19:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash -835025571, now seen corresponding path program 1 times [2021-12-17 16:19:53,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:53,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444627687] [2021-12-17 16:19:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:53,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:53,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:53,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444627687] [2021-12-17 16:19:53,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444627687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:53,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:53,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:19:53,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812663845] [2021-12-17 16:19:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:53,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:19:53,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:19:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:19:53,364 INFO L87 Difference]: Start difference. First operand 66418 states and 102380 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-12-17 16:19:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:58,402 INFO L93 Difference]: Finished difference Result 132468 states and 203533 transitions. [2021-12-17 16:19:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:19:58,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 99 [2021-12-17 16:19:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:58,690 INFO L225 Difference]: With dead ends: 132468 [2021-12-17 16:19:58,690 INFO L226 Difference]: Without dead ends: 132466 [2021-12-17 16:19:58,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:19:58,747 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 344 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:58,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1421 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:19:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132466 states. [2021-12-17 16:20:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132466 to 67826. [2021-12-17 16:20:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67826 states, 67825 states have (on average 1.53023221525986) internal successors, (103788), 67825 states have internal predecessors, (103788), 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) [2021-12-17 16:20:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67826 states to 67826 states and 103788 transitions. [2021-12-17 16:20:02,853 INFO L78 Accepts]: Start accepts. Automaton has 67826 states and 103788 transitions. Word has length 99 [2021-12-17 16:20:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:20:02,853 INFO L470 AbstractCegarLoop]: Abstraction has 67826 states and 103788 transitions. [2021-12-17 16:20:02,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-12-17 16:20:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 67826 states and 103788 transitions. [2021-12-17 16:20:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:20:02,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:20:02,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:20:02,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:20:02,870 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 16:20:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:20:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 210130591, now seen corresponding path program 1 times [2021-12-17 16:20:02,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:20:02,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372087626] [2021-12-17 16:20:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:20:02,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:20:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:20:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:20:03,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:20:03,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372087626] [2021-12-17 16:20:03,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372087626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:20:03,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:20:03,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 16:20:03,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005499093] [2021-12-17 16:20:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:20:03,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:20:03,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:20:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:20:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:20:03,051 INFO L87 Difference]: Start difference. First operand 67826 states and 103788 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 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)