./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label20.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 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:46:49,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:46:49,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:46:49,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:46:49,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:46:49,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:46:49,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:46:49,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:46:49,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:46:49,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:46:49,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:46:49,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:46:49,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:46:49,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:46:49,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:46:49,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:46:49,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:46:49,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:46:49,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:46:49,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:46:49,986 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:46:49,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:46:49,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:46:49,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:46:49,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:46:49,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:46:49,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:46:49,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:46:49,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:46:49,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:46:49,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:46:50,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:46:50,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:46:50,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:46:50,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:46:50,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:46:50,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:46:50,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:46:50,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:46:50,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:46:50,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:46:50,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:46:50,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:46:50,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:46:50,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:46:50,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:46:50,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:46:50,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:46:50,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:46:50,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:46:50,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:46:50,031 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:46:50,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:46:50,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:46:50,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:46:50,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:46:50,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:46:50,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:46:50,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:46:50,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:46:50,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:46:50,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:46:50,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:46:50,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:46:50,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:46:50,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed [2022-07-13 11:46:50,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:46:50,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:46:50,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:46:50,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:46:50,233 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:46:50,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2022-07-13 11:46:50,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160cbf793/b60deb32d4774aeda0edc65489d0e84a/FLAG2906f4b54 [2022-07-13 11:46:50,652 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:46:50,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2022-07-13 11:46:50,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160cbf793/b60deb32d4774aeda0edc65489d0e84a/FLAG2906f4b54 [2022-07-13 11:46:50,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160cbf793/b60deb32d4774aeda0edc65489d0e84a [2022-07-13 11:46:50,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:46:51,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:46:51,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:46:51,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:46:51,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:46:51,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:50" (1/1) ... [2022-07-13 11:46:51,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fe8330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51, skipping insertion in model container [2022-07-13 11:46:51,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:50" (1/1) ... [2022-07-13 11:46:51,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:46:51,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:46:51,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2022-07-13 11:46:51,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:46:51,485 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:46:51,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2022-07-13 11:46:51,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:46:51,657 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:46:51,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51 WrapperNode [2022-07-13 11:46:51,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:46:51,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:46:51,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:46:51,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:46:51,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,745 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-13 11:46:51,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:46:51,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:46:51,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:46:51,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:46:51,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:46:51,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:46:51,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:46:51,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:46:51,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (1/1) ... [2022-07-13 11:46:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:46:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:51,873 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) [2022-07-13 11:46:51,927 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 [2022-07-13 11:46:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:46:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:46:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:46:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:46:52,028 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:46:52,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:46:53,070 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:46:53,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:46:53,083 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:46:53,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:53 BoogieIcfgContainer [2022-07-13 11:46:53,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:46:53,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:46:53,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:46:53,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:46:53,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:46:50" (1/3) ... [2022-07-13 11:46:53,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4476077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:53, skipping insertion in model container [2022-07-13 11:46:53,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:51" (2/3) ... [2022-07-13 11:46:53,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4476077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:53, skipping insertion in model container [2022-07-13 11:46:53,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:53" (3/3) ... [2022-07-13 11:46:53,094 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2022-07-13 11:46:53,129 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:46:53,129 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:46:53,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:46:53,177 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5734ea64, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2dc24343 [2022-07-13 11:46:53,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:46:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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) [2022-07-13 11:46:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 11:46:53,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:53,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:53,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1628187933, now seen corresponding path program 1 times [2022-07-13 11:46:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:53,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720139371] [2022-07-13 11:46:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:53,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:53,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:53,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720139371] [2022-07-13 11:46:53,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720139371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:53,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610966056] [2022-07-13 11:46:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:53,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:53,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:53,688 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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) [2022-07-13 11:46:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:54,535 INFO L93 Difference]: Finished difference Result 836 states and 1480 transitions. [2022-07-13 11:46:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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 195 [2022-07-13 11:46:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:54,548 INFO L225 Difference]: With dead ends: 836 [2022-07-13 11:46:54,548 INFO L226 Difference]: Without dead ends: 457 [2022-07-13 11:46:54,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:54,554 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 88 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 150 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:46:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-13 11:46:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 451. [2022-07-13 11:46:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.5977777777777777) internal successors, (719), 450 states have internal predecessors, (719), 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) [2022-07-13 11:46:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 719 transitions. [2022-07-13 11:46:54,595 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 719 transitions. Word has length 195 [2022-07-13 11:46:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:54,596 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 719 transitions. [2022-07-13 11:46:54,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 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) [2022-07-13 11:46:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 719 transitions. [2022-07-13 11:46:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-13 11:46:54,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:54,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:46:54,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1999430185, now seen corresponding path program 1 times [2022-07-13 11:46:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:54,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056354564] [2022-07-13 11:46:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:54,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056354564] [2022-07-13 11:46:54,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056354564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:54,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:54,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888409242] [2022-07-13 11:46:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:54,677 INFO L87 Difference]: Start difference. First operand 451 states and 719 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2022-07-13 11:46:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:55,244 INFO L93 Difference]: Finished difference Result 1340 states and 2142 transitions. [2022-07-13 11:46:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2022-07-13 11:46:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:55,247 INFO L225 Difference]: With dead ends: 1340 [2022-07-13 11:46:55,248 INFO L226 Difference]: Without dead ends: 891 [2022-07-13 11:46:55,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:55,250 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 141 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-07-13 11:46:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 886. [2022-07-13 11:46:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.5785310734463276) internal successors, (1397), 885 states have internal predecessors, (1397), 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) [2022-07-13 11:46:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1397 transitions. [2022-07-13 11:46:55,273 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1397 transitions. Word has length 201 [2022-07-13 11:46:55,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:55,273 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1397 transitions. [2022-07-13 11:46:55,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2022-07-13 11:46:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1397 transitions. [2022-07-13 11:46:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-13 11:46:55,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:55,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:46:55,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:55,279 INFO L85 PathProgramCache]: Analyzing trace with hash -998854967, now seen corresponding path program 1 times [2022-07-13 11:46:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:55,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020749730] [2022-07-13 11:46:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:55,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020749730] [2022-07-13 11:46:55,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020749730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:55,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:55,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950599405] [2022-07-13 11:46:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:55,385 INFO L87 Difference]: Start difference. First operand 886 states and 1397 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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) [2022-07-13 11:46:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:56,000 INFO L93 Difference]: Finished difference Result 2605 states and 4115 transitions. [2022-07-13 11:46:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 205 [2022-07-13 11:46:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:56,006 INFO L225 Difference]: With dead ends: 2605 [2022-07-13 11:46:56,006 INFO L226 Difference]: Without dead ends: 1721 [2022-07-13 11:46:56,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:56,008 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 234 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:56,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 124 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2022-07-13 11:46:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1719. [2022-07-13 11:46:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.5017462165308497) internal successors, (2580), 1718 states have internal predecessors, (2580), 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) [2022-07-13 11:46:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2580 transitions. [2022-07-13 11:46:56,041 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2580 transitions. Word has length 205 [2022-07-13 11:46:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:56,042 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2580 transitions. [2022-07-13 11:46:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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) [2022-07-13 11:46:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2580 transitions. [2022-07-13 11:46:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-13 11:46:56,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:56,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:56,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:46:56,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 8555694, now seen corresponding path program 1 times [2022-07-13 11:46:56,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:56,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888554889] [2022-07-13 11:46:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:56,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:56,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888554889] [2022-07-13 11:46:56,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888554889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:56,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:56,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965415595] [2022-07-13 11:46:56,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:56,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:56,110 INFO L87 Difference]: Start difference. First operand 1719 states and 2580 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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) [2022-07-13 11:46:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:56,715 INFO L93 Difference]: Finished difference Result 5126 states and 7705 transitions. [2022-07-13 11:46:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:56,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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 207 [2022-07-13 11:46:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:56,727 INFO L225 Difference]: With dead ends: 5126 [2022-07-13 11:46:56,727 INFO L226 Difference]: Without dead ends: 3409 [2022-07-13 11:46:56,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:56,738 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:56,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 181 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-07-13 11:46:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3397. [2022-07-13 11:46:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 1.4840989399293287) internal successors, (5040), 3396 states have internal predecessors, (5040), 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) [2022-07-13 11:46:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5040 transitions. [2022-07-13 11:46:56,793 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5040 transitions. Word has length 207 [2022-07-13 11:46:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:56,794 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5040 transitions. [2022-07-13 11:46:56,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 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) [2022-07-13 11:46:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5040 transitions. [2022-07-13 11:46:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-13 11:46:56,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:56,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:56,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:46:56,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1855272595, now seen corresponding path program 1 times [2022-07-13 11:46:56,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841399218] [2022-07-13 11:46:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:56,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841399218] [2022-07-13 11:46:56,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841399218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:56,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:56,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844493907] [2022-07-13 11:46:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:56,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:56,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:56,862 INFO L87 Difference]: Start difference. First operand 3397 states and 5040 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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) [2022-07-13 11:46:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:57,437 INFO L93 Difference]: Finished difference Result 10087 states and 14974 transitions. [2022-07-13 11:46:57,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:57,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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 209 [2022-07-13 11:46:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:57,456 INFO L225 Difference]: With dead ends: 10087 [2022-07-13 11:46:57,456 INFO L226 Difference]: Without dead ends: 6692 [2022-07-13 11:46:57,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:57,465 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 240 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:57,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 152 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6692 states. [2022-07-13 11:46:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6692 to 6687. [2022-07-13 11:46:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 6686 states have (on average 1.4119054741250374) internal successors, (9440), 6686 states have internal predecessors, (9440), 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) [2022-07-13 11:46:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 9440 transitions. [2022-07-13 11:46:57,606 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 9440 transitions. Word has length 209 [2022-07-13 11:46:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:57,607 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 9440 transitions. [2022-07-13 11:46:57,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 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) [2022-07-13 11:46:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 9440 transitions. [2022-07-13 11:46:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-13 11:46:57,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:57,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:57,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:46:57,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2082869299, now seen corresponding path program 1 times [2022-07-13 11:46:57,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443879913] [2022-07-13 11:46:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443879913] [2022-07-13 11:46:57,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443879913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:57,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:57,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7033839] [2022-07-13 11:46:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:57,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:57,689 INFO L87 Difference]: Start difference. First operand 6687 states and 9440 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-07-13 11:46:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:58,342 INFO L93 Difference]: Finished difference Result 19503 states and 27570 transitions. [2022-07-13 11:46:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 216 [2022-07-13 11:46:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:58,408 INFO L225 Difference]: With dead ends: 19503 [2022-07-13 11:46:58,409 INFO L226 Difference]: Without dead ends: 12818 [2022-07-13 11:46:58,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:58,420 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 395 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12818 states. [2022-07-13 11:46:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12818 to 12808. [2022-07-13 11:46:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 12807 states have (on average 1.3145935816350434) internal successors, (16836), 12807 states have internal predecessors, (16836), 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) [2022-07-13 11:46:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 16836 transitions. [2022-07-13 11:46:58,637 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 16836 transitions. Word has length 216 [2022-07-13 11:46:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:58,638 INFO L495 AbstractCegarLoop]: Abstraction has 12808 states and 16836 transitions. [2022-07-13 11:46:58,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-07-13 11:46:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 16836 transitions. [2022-07-13 11:46:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-13 11:46:58,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:58,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:58,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:46:58,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1181739744, now seen corresponding path program 1 times [2022-07-13 11:46:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:58,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537134480] [2022-07-13 11:46:58,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537134480] [2022-07-13 11:46:58,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537134480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:58,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:58,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:58,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064607805] [2022-07-13 11:46:58,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:58,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:58,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:58,720 INFO L87 Difference]: Start difference. First operand 12808 states and 16836 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2022-07-13 11:46:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:59,392 INFO L93 Difference]: Finished difference Result 38319 states and 50383 transitions. [2022-07-13 11:46:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 218 [2022-07-13 11:46:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:59,439 INFO L225 Difference]: With dead ends: 38319 [2022-07-13 11:46:59,440 INFO L226 Difference]: Without dead ends: 25513 [2022-07-13 11:46:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:59,460 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:59,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 129 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25513 states. [2022-07-13 11:46:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25513 to 25453. [2022-07-13 11:46:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25453 states, 25452 states have (on average 1.3042197076850541) internal successors, (33195), 25452 states have internal predecessors, (33195), 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) [2022-07-13 11:46:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25453 states to 25453 states and 33195 transitions. [2022-07-13 11:46:59,878 INFO L78 Accepts]: Start accepts. Automaton has 25453 states and 33195 transitions. Word has length 218 [2022-07-13 11:46:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:59,880 INFO L495 AbstractCegarLoop]: Abstraction has 25453 states and 33195 transitions. [2022-07-13 11:46:59,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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) [2022-07-13 11:46:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 25453 states and 33195 transitions. [2022-07-13 11:46:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-13 11:46:59,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:59,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:59,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:46:59,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -200508232, now seen corresponding path program 1 times [2022-07-13 11:46:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:59,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400472750] [2022-07-13 11:46:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400472750] [2022-07-13 11:46:59,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400472750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:59,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:59,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727827547] [2022-07-13 11:46:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:59,975 INFO L87 Difference]: Start difference. First operand 25453 states and 33195 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2022-07-13 11:47:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:00,783 INFO L93 Difference]: Finished difference Result 63394 states and 83978 transitions. [2022-07-13 11:47:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-07-13 11:47:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:00,862 INFO L225 Difference]: With dead ends: 63394 [2022-07-13 11:47:00,862 INFO L226 Difference]: Without dead ends: 37943 [2022-07-13 11:47:00,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:00,891 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:00,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 204 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:47:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37943 states. [2022-07-13 11:47:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37943 to 37861. [2022-07-13 11:47:01,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37861 states, 37860 states have (on average 1.3260433174854729) internal successors, (50204), 37860 states have internal predecessors, (50204), 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) [2022-07-13 11:47:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37861 states to 37861 states and 50204 transitions. [2022-07-13 11:47:01,362 INFO L78 Accepts]: Start accepts. Automaton has 37861 states and 50204 transitions. Word has length 221 [2022-07-13 11:47:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:01,362 INFO L495 AbstractCegarLoop]: Abstraction has 37861 states and 50204 transitions. [2022-07-13 11:47:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2022-07-13 11:47:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 37861 states and 50204 transitions. [2022-07-13 11:47:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-13 11:47:01,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:01,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:47:01,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1374711229, now seen corresponding path program 1 times [2022-07-13 11:47:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:01,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222936519] [2022-07-13 11:47:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:47:01,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:01,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222936519] [2022-07-13 11:47:01,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222936519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:01,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:47:01,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:47:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631676748] [2022-07-13 11:47:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:01,557 INFO L87 Difference]: Start difference. First operand 37861 states and 50204 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:47:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:02,414 INFO L93 Difference]: Finished difference Result 94121 states and 124154 transitions. [2022-07-13 11:47:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2022-07-13 11:47:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:02,506 INFO L225 Difference]: With dead ends: 94121 [2022-07-13 11:47:02,506 INFO L226 Difference]: Without dead ends: 56262 [2022-07-13 11:47:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:02,537 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:02,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 158 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:47:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56262 states. [2022-07-13 11:47:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56262 to 56205. [2022-07-13 11:47:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56205 states, 56204 states have (on average 1.3104761226958936) internal successors, (73654), 56204 states have internal predecessors, (73654), 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) [2022-07-13 11:47:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56205 states to 56205 states and 73654 transitions. [2022-07-13 11:47:03,254 INFO L78 Accepts]: Start accepts. Automaton has 56205 states and 73654 transitions. Word has length 223 [2022-07-13 11:47:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:03,257 INFO L495 AbstractCegarLoop]: Abstraction has 56205 states and 73654 transitions. [2022-07-13 11:47:03,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:47:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 56205 states and 73654 transitions. [2022-07-13 11:47:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 11:47:03,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:03,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:03,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:47:03,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -870128958, now seen corresponding path program 1 times [2022-07-13 11:47:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029934957] [2022-07-13 11:47:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:47:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029934957] [2022-07-13 11:47:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029934957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:03,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:47:03,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:47:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861285380] [2022-07-13 11:47:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:03,376 INFO L87 Difference]: Start difference. First operand 56205 states and 73654 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2022-07-13 11:47:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:04,522 INFO L93 Difference]: Finished difference Result 133673 states and 176288 transitions. [2022-07-13 11:47:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 225 [2022-07-13 11:47:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:04,635 INFO L225 Difference]: With dead ends: 133673 [2022-07-13 11:47:04,635 INFO L226 Difference]: Without dead ends: 77470 [2022-07-13 11:47:04,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:04,672 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 200 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:47:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77470 states. [2022-07-13 11:47:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77470 to 77369. [2022-07-13 11:47:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77369 states, 77368 states have (on average 1.3209078688863614) internal successors, (102196), 77368 states have internal predecessors, (102196), 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) [2022-07-13 11:47:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77369 states to 77369 states and 102196 transitions. [2022-07-13 11:47:05,638 INFO L78 Accepts]: Start accepts. Automaton has 77369 states and 102196 transitions. Word has length 225 [2022-07-13 11:47:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:05,638 INFO L495 AbstractCegarLoop]: Abstraction has 77369 states and 102196 transitions. [2022-07-13 11:47:05,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2022-07-13 11:47:05,639 INFO L276 IsEmpty]: Start isEmpty. Operand 77369 states and 102196 transitions. [2022-07-13 11:47:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 11:47:05,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:05,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:05,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:47:05,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash 62979819, now seen corresponding path program 1 times [2022-07-13 11:47:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:05,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3678553] [2022-07-13 11:47:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:47:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3678553] [2022-07-13 11:47:05,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3678553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:05,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:47:05,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:47:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044743679] [2022-07-13 11:47:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:05,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:05,781 INFO L87 Difference]: Start difference. First operand 77369 states and 102196 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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) [2022-07-13 11:47:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:06,993 INFO L93 Difference]: Finished difference Result 182216 states and 240238 transitions. [2022-07-13 11:47:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 240 [2022-07-13 11:47:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:07,336 INFO L225 Difference]: With dead ends: 182216 [2022-07-13 11:47:07,337 INFO L226 Difference]: Without dead ends: 104849 [2022-07-13 11:47:07,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:07,367 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 206 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:07,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 187 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:47:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104849 states. [2022-07-13 11:47:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104849 to 104774. [2022-07-13 11:47:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104774 states, 104773 states have (on average 1.2897693107957202) internal successors, (135133), 104773 states have internal predecessors, (135133), 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) [2022-07-13 11:47:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104774 states to 104774 states and 135133 transitions. [2022-07-13 11:47:08,648 INFO L78 Accepts]: Start accepts. Automaton has 104774 states and 135133 transitions. Word has length 240 [2022-07-13 11:47:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:08,648 INFO L495 AbstractCegarLoop]: Abstraction has 104774 states and 135133 transitions. [2022-07-13 11:47:08,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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) [2022-07-13 11:47:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 104774 states and 135133 transitions. [2022-07-13 11:47:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-13 11:47:08,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:08,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:47:08,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash -397059178, now seen corresponding path program 1 times [2022-07-13 11:47:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:08,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958471748] [2022-07-13 11:47:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:47:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958471748] [2022-07-13 11:47:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958471748] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:47:09,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968781750] [2022-07-13 11:47:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:47:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:47:09,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:47:09,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:47:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:09,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:47:09,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:47:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 11:47:09,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:47:09,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968781750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:09,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:47:09,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:47:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962026802] [2022-07-13 11:47:09,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:09,318 INFO L87 Difference]: Start difference. First operand 104774 states and 135133 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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) [2022-07-13 11:47:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:10,788 INFO L93 Difference]: Finished difference Result 273874 states and 355241 transitions. [2022-07-13 11:47:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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 247 [2022-07-13 11:47:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:11,081 INFO L225 Difference]: With dead ends: 273874 [2022-07-13 11:47:11,081 INFO L226 Difference]: Without dead ends: 169914 [2022-07-13 11:47:11,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:11,140 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 235 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:11,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 165 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:47:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169914 states. [2022-07-13 11:47:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169914 to 169904. [2022-07-13 11:47:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169904 states, 169903 states have (on average 1.2758515152763636) internal successors, (216771), 169903 states have internal predecessors, (216771), 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) [2022-07-13 11:47:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169904 states to 169904 states and 216771 transitions. [2022-07-13 11:47:13,831 INFO L78 Accepts]: Start accepts. Automaton has 169904 states and 216771 transitions. Word has length 247 [2022-07-13 11:47:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:13,832 INFO L495 AbstractCegarLoop]: Abstraction has 169904 states and 216771 transitions. [2022-07-13 11:47:13,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 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) [2022-07-13 11:47:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 169904 states and 216771 transitions. [2022-07-13 11:47:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-13 11:47:13,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:13,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:13,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:47:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 11:47:14,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1467813147, now seen corresponding path program 1 times [2022-07-13 11:47:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:14,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011763985] [2022-07-13 11:47:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 11:47:14,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:14,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011763985] [2022-07-13 11:47:14,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011763985] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:47:14,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844969302] [2022-07-13 11:47:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:47:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:47:14,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:47:14,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:47:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:14,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:47:14,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:47:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 11:47:14,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:47:14,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844969302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:14,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:47:14,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:47:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463205506] [2022-07-13 11:47:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:14,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:14,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:14,441 INFO L87 Difference]: Start difference. First operand 169904 states and 216771 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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) [2022-07-13 11:47:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:16,199 INFO L93 Difference]: Finished difference Result 353531 states and 455087 transitions. [2022-07-13 11:47:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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 249 [2022-07-13 11:47:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:16,460 INFO L225 Difference]: With dead ends: 353531 [2022-07-13 11:47:16,461 INFO L226 Difference]: Without dead ends: 184035 [2022-07-13 11:47:16,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:16,526 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:16,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 170 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:47:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184035 states. [2022-07-13 11:47:18,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184035 to 184028. [2022-07-13 11:47:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184028 states, 184027 states have (on average 1.188488645687861) internal successors, (218714), 184027 states have internal predecessors, (218714), 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) [2022-07-13 11:47:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184028 states to 184028 states and 218714 transitions. [2022-07-13 11:47:19,258 INFO L78 Accepts]: Start accepts. Automaton has 184028 states and 218714 transitions. Word has length 249 [2022-07-13 11:47:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:19,258 INFO L495 AbstractCegarLoop]: Abstraction has 184028 states and 218714 transitions. [2022-07-13 11:47:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 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) [2022-07-13 11:47:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 184028 states and 218714 transitions. [2022-07-13 11:47:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-13 11:47:19,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:19,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:19,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:47:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 11:47:19,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1733913638, now seen corresponding path program 1 times [2022-07-13 11:47:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732130136] [2022-07-13 11:47:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 11:47:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:19,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732130136] [2022-07-13 11:47:19,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732130136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:19,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:47:19,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:47:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410632708] [2022-07-13 11:47:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:19,607 INFO L87 Difference]: Start difference. First operand 184028 states and 218714 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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) [2022-07-13 11:47:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:21,673 INFO L93 Difference]: Finished difference Result 432186 states and 513592 transitions. [2022-07-13 11:47:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:21,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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 257 [2022-07-13 11:47:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:22,435 INFO L225 Difference]: With dead ends: 432186 [2022-07-13 11:47:22,436 INFO L226 Difference]: Without dead ends: 256289 [2022-07-13 11:47:22,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:22,532 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:22,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 216 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:47:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256289 states. [2022-07-13 11:47:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256289 to 256257. [2022-07-13 11:47:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256257 states, 256256 states have (on average 1.1862863698801198) internal successors, (303993), 256256 states have internal predecessors, (303993), 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) [2022-07-13 11:47:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256257 states to 256257 states and 303993 transitions. [2022-07-13 11:47:26,218 INFO L78 Accepts]: Start accepts. Automaton has 256257 states and 303993 transitions. Word has length 257 [2022-07-13 11:47:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 256257 states and 303993 transitions. [2022-07-13 11:47:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 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) [2022-07-13 11:47:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 256257 states and 303993 transitions. [2022-07-13 11:47:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-13 11:47:26,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:26,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:26,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:47:26,293 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:26,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1901719163, now seen corresponding path program 1 times [2022-07-13 11:47:26,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:26,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704662053] [2022-07-13 11:47:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 11:47:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704662053] [2022-07-13 11:47:26,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704662053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:47:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825044175] [2022-07-13 11:47:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:26,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:47:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:47:26,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:47:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:47:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:26,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:47:26,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:47:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:47:26,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:47:26,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825044175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:26,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:47:26,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:47:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046361339] [2022-07-13 11:47:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:26,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:26,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:26,562 INFO L87 Difference]: Start difference. First operand 256257 states and 303993 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2022-07-13 11:47:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:29,374 INFO L93 Difference]: Finished difference Result 532979 states and 630832 transitions. [2022-07-13 11:47:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 263 [2022-07-13 11:47:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:29,851 INFO L225 Difference]: With dead ends: 532979 [2022-07-13 11:47:29,851 INFO L226 Difference]: Without dead ends: 297669 [2022-07-13 11:47:29,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:29,920 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 258 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:29,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 102 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:47:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297669 states. [2022-07-13 11:47:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297669 to 296639. [2022-07-13 11:47:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296639 states, 296638 states have (on average 1.1747314909081101) internal successors, (348470), 296638 states have internal predecessors, (348470), 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) [2022-07-13 11:47:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296639 states to 296639 states and 348470 transitions. [2022-07-13 11:47:34,411 INFO L78 Accepts]: Start accepts. Automaton has 296639 states and 348470 transitions. Word has length 263 [2022-07-13 11:47:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:34,412 INFO L495 AbstractCegarLoop]: Abstraction has 296639 states and 348470 transitions. [2022-07-13 11:47:34,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2022-07-13 11:47:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 296639 states and 348470 transitions. [2022-07-13 11:47:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-13 11:47:34,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:34,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:47:34,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:47:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:47:34,698 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 295505605, now seen corresponding path program 1 times [2022-07-13 11:47:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:34,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071481169] [2022-07-13 11:47:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 11:47:34,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:34,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071481169] [2022-07-13 11:47:34,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071481169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:47:34,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177474192] [2022-07-13 11:47:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:47:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:47:34,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:47:34,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:47:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:34,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:47:34,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:47:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 11:47:34,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:47:34,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177474192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:34,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:47:34,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:47:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786182540] [2022-07-13 11:47:34,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:34,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:34,921 INFO L87 Difference]: Start difference. First operand 296639 states and 348470 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-07-13 11:47:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:37,093 INFO L93 Difference]: Finished difference Result 662540 states and 778989 transitions. [2022-07-13 11:47:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 274 [2022-07-13 11:47:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:37,840 INFO L225 Difference]: With dead ends: 662540 [2022-07-13 11:47:37,840 INFO L226 Difference]: Without dead ends: 450511 [2022-07-13 11:47:38,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:47:38,442 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 303 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:38,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 893 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:47:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450511 states.