./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.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/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b118c8ccb1b9404d8245cd33bf194109f3b73174bef011d7daa0d7cc47fcd86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:28:41,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:28:41,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:28:42,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:28:42,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:28:42,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:28:42,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:28:42,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:28:42,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:28:42,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:28:42,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:28:42,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:28:42,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:28:42,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:28:42,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:28:42,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:28:42,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:28:42,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:28:42,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:28:42,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:28:42,064 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:28:42,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:28:42,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:28:42,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:28:42,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:28:42,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:28:42,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:28:42,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:28:42,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:28:42,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:28:42,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:28:42,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:28:42,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:28:42,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:28:42,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:28:42,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:28:42,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:28:42,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:28:42,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:28:42,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:28:42,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:28:42,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:28:42,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:28:42,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:28:42,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:28:42,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:28:42,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:28:42,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:28:42,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:28:42,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:28:42,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:28:42,122 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:28:42,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:28:42,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:28:42,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:28:42,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:28:42,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:28:42,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:28:42,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:28:42,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:28:42,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:28:42,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:28:42,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:28:42,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:28:42,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:28:42,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:28:42,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:28:42,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:28:42,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:28:42,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:28:42,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:28:42,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:28:42,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:28:42,127 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:28:42,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:28:42,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:28:42,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b118c8ccb1b9404d8245cd33bf194109f3b73174bef011d7daa0d7cc47fcd86 [2022-07-13 18:28:42,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:28:42,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:28:42,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:28:42,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:28:42,383 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:28:42,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2022-07-13 18:28:42,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b739155e5/e598097c89014c95bc69474c2f0d827a/FLAGbbe5a7607 [2022-07-13 18:28:42,845 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:28:42,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2022-07-13 18:28:42,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b739155e5/e598097c89014c95bc69474c2f0d827a/FLAGbbe5a7607 [2022-07-13 18:28:43,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b739155e5/e598097c89014c95bc69474c2f0d827a [2022-07-13 18:28:43,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:28:43,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:28:43,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:28:43,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:28:43,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:28:43,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13280f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43, skipping insertion in model container [2022-07-13 18:28:43,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:28:43,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:28:43,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c[31172,31185] [2022-07-13 18:28:43,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:28:43,596 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:28:43,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c[31172,31185] [2022-07-13 18:28:43,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:28:43,737 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:28:43,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43 WrapperNode [2022-07-13 18:28:43,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:28:43,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:28:43,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:28:43,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:28:43,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,849 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1008 [2022-07-13 18:28:43,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:28:43,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:28:43,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:28:43,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:28:43,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:28:43,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:28:43,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:28:43,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:28:43,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (1/1) ... [2022-07-13 18:28:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:28:43,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:28:43,965 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 18:28:43,993 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 18:28:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:28:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:28:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:28:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:28:44,189 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:28:44,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:28:45,018 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:28:45,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:28:45,033 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:28:45,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:28:45 BoogieIcfgContainer [2022-07-13 18:28:45,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:28:45,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:28:45,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:28:45,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:28:45,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:28:43" (1/3) ... [2022-07-13 18:28:45,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1037d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:28:45, skipping insertion in model container [2022-07-13 18:28:45,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:28:43" (2/3) ... [2022-07-13 18:28:45,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1037d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:28:45, skipping insertion in model container [2022-07-13 18:28:45,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:28:45" (3/3) ... [2022-07-13 18:28:45,045 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2022-07-13 18:28:45,065 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:28:45,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:28:45,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:28:45,144 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@5da6cc46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6025980e [2022-07-13 18:28:45,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:28:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 330 states have (on average 1.8) internal successors, (594), 331 states have internal predecessors, (594), 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 18:28:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:28:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:45,179 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] [2022-07-13 18:28:45,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -196336848, now seen corresponding path program 1 times [2022-07-13 18:28:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:45,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928466424] [2022-07-13 18:28:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:45,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:45,515 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 18:28:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928466424] [2022-07-13 18:28:45,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928466424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:45,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:45,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:28:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485187273] [2022-07-13 18:28:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:45,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:28:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:28:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:28:45,545 INFO L87 Difference]: Start difference. First operand has 332 states, 330 states have (on average 1.8) internal successors, (594), 331 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 18:28:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:45,588 INFO L93 Difference]: Finished difference Result 465 states and 823 transitions. [2022-07-13 18:28:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:28:45,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-07-13 18:28:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:45,601 INFO L225 Difference]: With dead ends: 465 [2022-07-13 18:28:45,601 INFO L226 Difference]: Without dead ends: 328 [2022-07-13 18:28:45,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:28:45,607 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:45,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-13 18:28:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-07-13 18:28:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.7951070336391437) internal successors, (587), 327 states have internal predecessors, (587), 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 18:28:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 587 transitions. [2022-07-13 18:28:45,658 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 587 transitions. Word has length 77 [2022-07-13 18:28:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:45,658 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 587 transitions. [2022-07-13 18:28:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 18:28:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 587 transitions. [2022-07-13 18:28:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:28:45,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:45,662 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] [2022-07-13 18:28:45,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:28:45,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash -330350354, now seen corresponding path program 1 times [2022-07-13 18:28:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:45,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569750907] [2022-07-13 18:28:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:45,784 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 18:28:45,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:45,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569750907] [2022-07-13 18:28:45,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569750907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:45,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:45,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:28:45,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999661080] [2022-07-13 18:28:45,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:28:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:28:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:28:45,788 INFO L87 Difference]: Start difference. First operand 328 states and 587 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 18:28:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:45,890 INFO L93 Difference]: Finished difference Result 464 states and 816 transitions. [2022-07-13 18:28:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:28:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-07-13 18:28:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:45,896 INFO L225 Difference]: With dead ends: 464 [2022-07-13 18:28:45,896 INFO L226 Difference]: Without dead ends: 328 [2022-07-13 18:28:45,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:28:45,898 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 3 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:45,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2291 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:28:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-13 18:28:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-07-13 18:28:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.654434250764526) internal successors, (541), 327 states have internal predecessors, (541), 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 18:28:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 541 transitions. [2022-07-13 18:28:45,945 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 541 transitions. Word has length 77 [2022-07-13 18:28:45,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 541 transitions. [2022-07-13 18:28:45,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 18:28:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 541 transitions. [2022-07-13 18:28:45,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 18:28:45,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:45,953 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] [2022-07-13 18:28:45,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:28:45,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash -550758364, now seen corresponding path program 1 times [2022-07-13 18:28:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:45,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530716472] [2022-07-13 18:28:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:46,126 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 18:28:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530716472] [2022-07-13 18:28:46,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530716472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:46,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:46,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803098831] [2022-07-13 18:28:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:46,129 INFO L87 Difference]: Start difference. First operand 328 states and 541 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 18:28:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:46,178 INFO L93 Difference]: Finished difference Result 580 states and 969 transitions. [2022-07-13 18:28:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2022-07-13 18:28:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:46,181 INFO L225 Difference]: With dead ends: 580 [2022-07-13 18:28:46,181 INFO L226 Difference]: Without dead ends: 448 [2022-07-13 18:28:46,185 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 18:28:46,190 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 194 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:46,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1018 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-13 18:28:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 445. [2022-07-13 18:28:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.6576576576576576) internal successors, (736), 444 states have internal predecessors, (736), 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 18:28:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 736 transitions. [2022-07-13 18:28:46,226 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 736 transitions. Word has length 122 [2022-07-13 18:28:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 736 transitions. [2022-07-13 18:28:46,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 18:28:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 736 transitions. [2022-07-13 18:28:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 18:28:46,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:46,229 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] [2022-07-13 18:28:46,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:28:46,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1222100528, now seen corresponding path program 1 times [2022-07-13 18:28:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:46,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334500103] [2022-07-13 18:28:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:46,367 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 18:28:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:46,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334500103] [2022-07-13 18:28:46,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334500103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:46,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:46,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095150206] [2022-07-13 18:28:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:46,371 INFO L87 Difference]: Start difference. First operand 445 states and 736 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 18:28:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:46,421 INFO L93 Difference]: Finished difference Result 923 states and 1540 transitions. [2022-07-13 18:28:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:46,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-07-13 18:28:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:46,426 INFO L225 Difference]: With dead ends: 923 [2022-07-13 18:28:46,426 INFO L226 Difference]: Without dead ends: 674 [2022-07-13 18:28:46,429 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 18:28:46,438 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 195 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:46,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1031 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-13 18:28:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 670. [2022-07-13 18:28:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.663677130044843) internal successors, (1113), 669 states have internal predecessors, (1113), 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 18:28:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1113 transitions. [2022-07-13 18:28:46,473 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1113 transitions. Word has length 125 [2022-07-13 18:28:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:46,475 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1113 transitions. [2022-07-13 18:28:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 18:28:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1113 transitions. [2022-07-13 18:28:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 18:28:46,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:46,478 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] [2022-07-13 18:28:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:28:46,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash -116041787, now seen corresponding path program 1 times [2022-07-13 18:28:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:46,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753080631] [2022-07-13 18:28:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:46,590 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 18:28:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:46,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753080631] [2022-07-13 18:28:46,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753080631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:46,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:46,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744271072] [2022-07-13 18:28:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:46,594 INFO L87 Difference]: Start difference. First operand 670 states and 1113 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 18:28:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:46,638 INFO L93 Difference]: Finished difference Result 1578 states and 2635 transitions. [2022-07-13 18:28:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-07-13 18:28:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:46,644 INFO L225 Difference]: With dead ends: 1578 [2022-07-13 18:28:46,644 INFO L226 Difference]: Without dead ends: 1104 [2022-07-13 18:28:46,645 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 18:28:46,646 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 188 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:46,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1032 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-07-13 18:28:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1098. [2022-07-13 18:28:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.6636280765724705) internal successors, (1825), 1097 states have internal predecessors, (1825), 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 18:28:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1825 transitions. [2022-07-13 18:28:46,679 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1825 transitions. Word has length 128 [2022-07-13 18:28:46,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:46,680 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1825 transitions. [2022-07-13 18:28:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 18:28:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1825 transitions. [2022-07-13 18:28:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 18:28:46,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:46,685 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] [2022-07-13 18:28:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:28:46,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash 655173041, now seen corresponding path program 1 times [2022-07-13 18:28:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:46,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699941480] [2022-07-13 18:28:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:46,783 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 18:28:46,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:46,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699941480] [2022-07-13 18:28:46,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699941480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:46,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:46,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599301062] [2022-07-13 18:28:46,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:46,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:46,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:46,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:46,785 INFO L87 Difference]: Start difference. First operand 1098 states and 1825 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:28:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:46,846 INFO L93 Difference]: Finished difference Result 2822 states and 4699 transitions. [2022-07-13 18:28:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:46,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2022-07-13 18:28:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:46,855 INFO L225 Difference]: With dead ends: 2822 [2022-07-13 18:28:46,855 INFO L226 Difference]: Without dead ends: 1920 [2022-07-13 18:28:46,857 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 18:28:46,858 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 181 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:46,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1033 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-07-13 18:28:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1910. [2022-07-13 18:28:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 1.6579360921948665) internal successors, (3165), 1909 states have internal predecessors, (3165), 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 18:28:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3165 transitions. [2022-07-13 18:28:46,916 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3165 transitions. Word has length 131 [2022-07-13 18:28:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:46,916 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3165 transitions. [2022-07-13 18:28:46,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 18:28:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3165 transitions. [2022-07-13 18:28:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 18:28:46,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:46,918 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] [2022-07-13 18:28:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:28:46,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash 455457894, now seen corresponding path program 1 times [2022-07-13 18:28:46,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:46,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71569152] [2022-07-13 18:28:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:47,019 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 18:28:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:47,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71569152] [2022-07-13 18:28:47,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71569152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:47,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:47,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:28:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540137319] [2022-07-13 18:28:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:28:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:28:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:28:47,021 INFO L87 Difference]: Start difference. First operand 1910 states and 3165 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 18:28:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:47,374 INFO L93 Difference]: Finished difference Result 9906 states and 16581 transitions. [2022-07-13 18:28:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:28:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 134 [2022-07-13 18:28:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:47,409 INFO L225 Difference]: With dead ends: 9906 [2022-07-13 18:28:47,410 INFO L226 Difference]: Without dead ends: 8192 [2022-07-13 18:28:47,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:28:47,419 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 2412 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:47,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 3741 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:28:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2022-07-13 18:28:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 3510. [2022-07-13 18:28:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 1.6591621544599602) internal successors, (5822), 3509 states have internal predecessors, (5822), 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 18:28:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5822 transitions. [2022-07-13 18:28:47,607 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5822 transitions. Word has length 134 [2022-07-13 18:28:47,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:47,607 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5822 transitions. [2022-07-13 18:28:47,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 18:28:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5822 transitions. [2022-07-13 18:28:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 18:28:47,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:47,611 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] [2022-07-13 18:28:47,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:28:47,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -860313711, now seen corresponding path program 1 times [2022-07-13 18:28:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:47,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847541700] [2022-07-13 18:28:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:47,711 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 18:28:47,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:47,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847541700] [2022-07-13 18:28:47,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847541700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:47,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:47,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:28:47,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294781786] [2022-07-13 18:28:47,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:28:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:28:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:28:47,714 INFO L87 Difference]: Start difference. First operand 3510 states and 5822 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 18:28:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:47,909 INFO L93 Difference]: Finished difference Result 10266 states and 17136 transitions. [2022-07-13 18:28:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:28:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 135 [2022-07-13 18:28:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:47,936 INFO L225 Difference]: With dead ends: 10266 [2022-07-13 18:28:47,937 INFO L226 Difference]: Without dead ends: 6952 [2022-07-13 18:28:47,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:28:47,944 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 655 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:47,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1607 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2022-07-13 18:28:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 5214. [2022-07-13 18:28:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 1.6621906771532706) internal successors, (8665), 5213 states have internal predecessors, (8665), 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 18:28:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 8665 transitions. [2022-07-13 18:28:48,171 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 8665 transitions. Word has length 135 [2022-07-13 18:28:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:48,171 INFO L495 AbstractCegarLoop]: Abstraction has 5214 states and 8665 transitions. [2022-07-13 18:28:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 18:28:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 8665 transitions. [2022-07-13 18:28:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 18:28:48,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:48,175 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] [2022-07-13 18:28:48,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:28:48,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1469443837, now seen corresponding path program 1 times [2022-07-13 18:28:48,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294221909] [2022-07-13 18:28:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:48,250 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 18:28:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294221909] [2022-07-13 18:28:48,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294221909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:48,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:48,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:28:48,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731557030] [2022-07-13 18:28:48,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:48,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:28:48,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:28:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:28:48,253 INFO L87 Difference]: Start difference. First operand 5214 states and 8665 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 18:28:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:48,514 INFO L93 Difference]: Finished difference Result 15296 states and 25500 transitions. [2022-07-13 18:28:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:28:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 136 [2022-07-13 18:28:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:48,554 INFO L225 Difference]: With dead ends: 15296 [2022-07-13 18:28:48,554 INFO L226 Difference]: Without dead ends: 10278 [2022-07-13 18:28:48,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:28:48,566 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 653 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:48,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1654 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2022-07-13 18:28:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 7722. [2022-07-13 18:28:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7721 states have (on average 1.6602771661701852) internal successors, (12819), 7721 states have internal predecessors, (12819), 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 18:28:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 12819 transitions. [2022-07-13 18:28:48,926 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 12819 transitions. Word has length 136 [2022-07-13 18:28:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:48,927 INFO L495 AbstractCegarLoop]: Abstraction has 7722 states and 12819 transitions. [2022-07-13 18:28:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 18:28:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 12819 transitions. [2022-07-13 18:28:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 18:28:48,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:48,932 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] [2022-07-13 18:28:48,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:28:48,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash 846488136, now seen corresponding path program 1 times [2022-07-13 18:28:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:48,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595877791] [2022-07-13 18:28:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:49,028 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 18:28:49,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595877791] [2022-07-13 18:28:49,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595877791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:49,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:49,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:28:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267673622] [2022-07-13 18:28:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:49,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:28:49,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:28:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:28:49,031 INFO L87 Difference]: Start difference. First operand 7722 states and 12819 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:28:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:49,404 INFO L93 Difference]: Finished difference Result 22712 states and 37812 transitions. [2022-07-13 18:28:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:28:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-07-13 18:28:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:49,437 INFO L225 Difference]: With dead ends: 22712 [2022-07-13 18:28:49,438 INFO L226 Difference]: Without dead ends: 15186 [2022-07-13 18:28:49,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:28:49,452 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 651 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:49,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1765 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15186 states. [2022-07-13 18:28:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15186 to 11420. [2022-07-13 18:28:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11420 states, 11419 states have (on average 1.658201243541466) internal successors, (18935), 11419 states have internal predecessors, (18935), 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 18:28:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 18935 transitions. [2022-07-13 18:28:49,917 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 18935 transitions. Word has length 137 [2022-07-13 18:28:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:49,918 INFO L495 AbstractCegarLoop]: Abstraction has 11420 states and 18935 transitions. [2022-07-13 18:28:49,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:28:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 18935 transitions. [2022-07-13 18:28:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:28:49,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:49,923 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] [2022-07-13 18:28:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:28:49,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1116265068, now seen corresponding path program 1 times [2022-07-13 18:28:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571318781] [2022-07-13 18:28:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:49,998 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 18:28:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:49,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571318781] [2022-07-13 18:28:49,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571318781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:49,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:49,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:28:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186809674] [2022-07-13 18:28:49,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:50,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:28:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:28:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:28:50,001 INFO L87 Difference]: Start difference. First operand 11420 states and 18935 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 18:28:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:50,590 INFO L93 Difference]: Finished difference Result 33504 states and 55700 transitions. [2022-07-13 18:28:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:28:50,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2022-07-13 18:28:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:50,639 INFO L225 Difference]: With dead ends: 33504 [2022-07-13 18:28:50,639 INFO L226 Difference]: Without dead ends: 22280 [2022-07-13 18:28:50,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:28:50,662 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 649 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1774 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22280 states. [2022-07-13 18:28:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22280 to 16802. [2022-07-13 18:28:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16802 states, 16801 states have (on average 1.656032379025058) internal successors, (27823), 16801 states have internal predecessors, (27823), 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 18:28:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16802 states to 16802 states and 27823 transitions. [2022-07-13 18:28:51,323 INFO L78 Accepts]: Start accepts. Automaton has 16802 states and 27823 transitions. Word has length 138 [2022-07-13 18:28:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:51,323 INFO L495 AbstractCegarLoop]: Abstraction has 16802 states and 27823 transitions. [2022-07-13 18:28:51,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 18:28:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16802 states and 27823 transitions. [2022-07-13 18:28:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:28:51,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:51,329 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] [2022-07-13 18:28:51,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:28:51,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:51,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash -397139727, now seen corresponding path program 1 times [2022-07-13 18:28:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:51,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326929981] [2022-07-13 18:28:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:51,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:51,381 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 18:28:51,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:51,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326929981] [2022-07-13 18:28:51,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326929981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:51,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782313567] [2022-07-13 18:28:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:51,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:51,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:51,384 INFO L87 Difference]: Start difference. First operand 16802 states and 27823 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:52,091 INFO L93 Difference]: Finished difference Result 38312 states and 63393 transitions. [2022-07-13 18:28:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2022-07-13 18:28:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:52,153 INFO L225 Difference]: With dead ends: 38312 [2022-07-13 18:28:52,154 INFO L226 Difference]: Without dead ends: 26582 [2022-07-13 18:28:52,229 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 18:28:52,232 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 180 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:52,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1081 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26582 states. [2022-07-13 18:28:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26582 to 26580. [2022-07-13 18:28:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26580 states, 26579 states have (on average 1.646149215546108) internal successors, (43753), 26579 states have internal predecessors, (43753), 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 18:28:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26580 states to 26580 states and 43753 transitions. [2022-07-13 18:28:53,114 INFO L78 Accepts]: Start accepts. Automaton has 26580 states and 43753 transitions. Word has length 138 [2022-07-13 18:28:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:53,115 INFO L495 AbstractCegarLoop]: Abstraction has 26580 states and 43753 transitions. [2022-07-13 18:28:53,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26580 states and 43753 transitions. [2022-07-13 18:28:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:28:53,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:53,120 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] [2022-07-13 18:28:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:28:53,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1906561851, now seen corresponding path program 1 times [2022-07-13 18:28:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:53,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803434825] [2022-07-13 18:28:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:53,181 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 18:28:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803434825] [2022-07-13 18:28:53,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803434825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:53,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:53,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585401047] [2022-07-13 18:28:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:53,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:53,184 INFO L87 Difference]: Start difference. First operand 26580 states and 43753 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:54,200 INFO L93 Difference]: Finished difference Result 58514 states and 96423 transitions. [2022-07-13 18:28:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:54,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2022-07-13 18:28:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:54,285 INFO L225 Difference]: With dead ends: 58514 [2022-07-13 18:28:54,286 INFO L226 Difference]: Without dead ends: 40152 [2022-07-13 18:28:54,312 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 18:28:54,313 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 187 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:54,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40152 states. [2022-07-13 18:28:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40152 to 40150. [2022-07-13 18:28:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40150 states, 40149 states have (on average 1.6399163117387732) internal successors, (65841), 40149 states have internal predecessors, (65841), 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 18:28:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40150 states to 40150 states and 65841 transitions. [2022-07-13 18:28:55,449 INFO L78 Accepts]: Start accepts. Automaton has 40150 states and 65841 transitions. Word has length 138 [2022-07-13 18:28:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:55,450 INFO L495 AbstractCegarLoop]: Abstraction has 40150 states and 65841 transitions. [2022-07-13 18:28:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 40150 states and 65841 transitions. [2022-07-13 18:28:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:28:55,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:55,453 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] [2022-07-13 18:28:55,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:28:55,454 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 968808881, now seen corresponding path program 1 times [2022-07-13 18:28:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:55,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271594993] [2022-07-13 18:28:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:55,520 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 18:28:55,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271594993] [2022-07-13 18:28:55,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271594993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:55,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:55,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:55,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463875530] [2022-07-13 18:28:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:55,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:55,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:55,523 INFO L87 Difference]: Start difference. First operand 40150 states and 65841 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:28:56,924 INFO L93 Difference]: Finished difference Result 88686 states and 145453 transitions. [2022-07-13 18:28:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:28:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2022-07-13 18:28:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:28:57,055 INFO L225 Difference]: With dead ends: 88686 [2022-07-13 18:28:57,055 INFO L226 Difference]: Without dead ends: 60584 [2022-07-13 18:28:57,088 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 18:28:57,089 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 194 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:28:57,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:28:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60584 states. [2022-07-13 18:28:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60584 to 60582. [2022-07-13 18:28:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60582 states, 60581 states have (on average 1.6307258051204172) internal successors, (98791), 60581 states have internal predecessors, (98791), 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 18:28:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60582 states to 60582 states and 98791 transitions. [2022-07-13 18:28:58,765 INFO L78 Accepts]: Start accepts. Automaton has 60582 states and 98791 transitions. Word has length 138 [2022-07-13 18:28:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:28:58,765 INFO L495 AbstractCegarLoop]: Abstraction has 60582 states and 98791 transitions. [2022-07-13 18:28:58,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:28:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 60582 states and 98791 transitions. [2022-07-13 18:28:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 18:28:58,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:28:58,767 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] [2022-07-13 18:28:58,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:28:58,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:28:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:28:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1444659835, now seen corresponding path program 1 times [2022-07-13 18:28:58,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:28:58,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942690269] [2022-07-13 18:28:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:28:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:28:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:28:58,817 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 18:28:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:28:58,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942690269] [2022-07-13 18:28:58,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942690269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:28:58,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:28:58,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:28:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177007167] [2022-07-13 18:28:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:28:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:28:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:28:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:28:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:28:58,820 INFO L87 Difference]: Start difference. First operand 60582 states and 98791 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:29:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:01,243 INFO L93 Difference]: Finished difference Result 134697 states and 220608 transitions. [2022-07-13 18:29:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:29:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2022-07-13 18:29:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:01,522 INFO L225 Difference]: With dead ends: 134697 [2022-07-13 18:29:01,522 INFO L226 Difference]: Without dead ends: 91486 [2022-07-13 18:29:01,569 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 18:29:01,571 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 201 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:01,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:29:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91486 states. [2022-07-13 18:29:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91486 to 91484. [2022-07-13 18:29:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91484 states, 91483 states have (on average 1.6246406436168468) internal successors, (148627), 91483 states have internal predecessors, (148627), 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 18:29:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91484 states to 91484 states and 148627 transitions. [2022-07-13 18:29:04,530 INFO L78 Accepts]: Start accepts. Automaton has 91484 states and 148627 transitions. Word has length 138 [2022-07-13 18:29:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:04,530 INFO L495 AbstractCegarLoop]: Abstraction has 91484 states and 148627 transitions. [2022-07-13 18:29:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 18:29:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 91484 states and 148627 transitions. [2022-07-13 18:29:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 18:29:04,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:04,532 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] [2022-07-13 18:29:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:29:04,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1205053460, now seen corresponding path program 1 times [2022-07-13 18:29:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:04,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127613772] [2022-07-13 18:29:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:04,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:04,694 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 18:29:04,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:04,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127613772] [2022-07-13 18:29:04,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127613772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:04,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:04,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:29:04,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438990880] [2022-07-13 18:29:04,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:04,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:29:04,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:29:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:29:04,698 INFO L87 Difference]: Start difference. First operand 91484 states and 148627 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 18:29:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:07,547 INFO L93 Difference]: Finished difference Result 182724 states and 296862 transitions. [2022-07-13 18:29:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:29:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 140 [2022-07-13 18:29:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:07,723 INFO L225 Difference]: With dead ends: 182724 [2022-07-13 18:29:07,723 INFO L226 Difference]: Without dead ends: 91486 [2022-07-13 18:29:07,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:07,781 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 342 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:07,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 2541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91486 states. [2022-07-13 18:29:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91486 to 91484. [2022-07-13 18:29:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91484 states, 91483 states have (on average 1.6178087732146955) internal successors, (148002), 91483 states have internal predecessors, (148002), 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 18:29:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91484 states to 91484 states and 148002 transitions. [2022-07-13 18:29:10,854 INFO L78 Accepts]: Start accepts. Automaton has 91484 states and 148002 transitions. Word has length 140 [2022-07-13 18:29:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:10,854 INFO L495 AbstractCegarLoop]: Abstraction has 91484 states and 148002 transitions. [2022-07-13 18:29:10,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 18:29:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 91484 states and 148002 transitions. [2022-07-13 18:29:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 18:29:10,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:10,855 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] [2022-07-13 18:29:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:29:10,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash 836779979, now seen corresponding path program 1 times [2022-07-13 18:29:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:10,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650857233] [2022-07-13 18:29:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:10,986 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 18:29:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650857233] [2022-07-13 18:29:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650857233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:10,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:10,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:29:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75845410] [2022-07-13 18:29:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:29:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:29:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:29:10,989 INFO L87 Difference]: Start difference. First operand 91484 states and 148002 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 18:29:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:29:15,946 INFO L93 Difference]: Finished difference Result 267490 states and 433186 transitions. [2022-07-13 18:29:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:29:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 143 [2022-07-13 18:29:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:29:16,273 INFO L225 Difference]: With dead ends: 267490 [2022-07-13 18:29:16,273 INFO L226 Difference]: Without dead ends: 176252 [2022-07-13 18:29:16,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:16,349 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 699 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:29:16,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2051 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:29:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176252 states. [2022-07-13 18:29:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176252 to 176250. [2022-07-13 18:29:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176250 states, 176249 states have (on average 1.6088545183235081) internal successors, (283559), 176249 states have internal predecessors, (283559), 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 18:29:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176250 states to 176250 states and 283559 transitions. [2022-07-13 18:29:22,778 INFO L78 Accepts]: Start accepts. Automaton has 176250 states and 283559 transitions. Word has length 143 [2022-07-13 18:29:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:29:22,779 INFO L495 AbstractCegarLoop]: Abstraction has 176250 states and 283559 transitions. [2022-07-13 18:29:22,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 18:29:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 176250 states and 283559 transitions. [2022-07-13 18:29:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 18:29:22,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:29:22,780 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] [2022-07-13 18:29:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:29:22,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:29:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:29:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash -260969643, now seen corresponding path program 1 times [2022-07-13 18:29:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:29:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436839428] [2022-07-13 18:29:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:29:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:29:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:29:22,972 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 18:29:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:29:22,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436839428] [2022-07-13 18:29:22,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436839428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:29:22,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:29:22,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:29:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399603942] [2022-07-13 18:29:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:29:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:29:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:29:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:29:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:29:22,974 INFO L87 Difference]: Start difference. First operand 176250 states and 283559 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 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)