./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a475a1757f9d6a7e4fb14b3de484172261c724bb5d3b2a10ee5c8f5de9de51b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:06:51,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:06:51,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:06:51,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:06:51,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:06:51,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:06:51,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:06:51,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:06:51,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:06:51,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:06:51,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:06:51,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:06:51,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:06:51,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:06:51,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:06:51,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:06:51,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:06:51,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:06:51,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:06:51,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:06:51,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:06:51,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:06:51,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:06:51,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:06:51,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:06:51,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:06:51,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:06:51,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:06:51,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:06:51,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:06:51,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:06:51,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:06:51,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:06:51,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:06:51,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:06:51,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:06:51,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:06:51,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:06:51,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:06:51,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:06:51,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:06:51,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:06:51,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:06:51,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:06:51,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:06:51,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:06:51,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:06:51,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:06:51,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:06:51,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:06:51,102 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:06:51,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:06:51,102 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:06:51,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:06:51,104 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:06:51,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:06:51,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:06:51,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:06:51,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:06:51,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:06:51,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:06:51,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:06:51,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:06:51,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:06:51,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:06:51,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:06:51,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:06:51,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:06:51,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:06:51,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:06:51,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:06:51,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a475a1757f9d6a7e4fb14b3de484172261c724bb5d3b2a10ee5c8f5de9de51b [2021-12-22 12:06:51,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:06:51,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:06:51,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:06:51,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:06:51,371 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:06:51,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-12-22 12:06:51,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89e3c7c5/ebb4266a8a4b4bbe84f5e510666ce934/FLAGd5948fd36 [2021-12-22 12:06:51,877 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:06:51,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-12-22 12:06:51,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89e3c7c5/ebb4266a8a4b4bbe84f5e510666ce934/FLAGd5948fd36 [2021-12-22 12:06:51,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89e3c7c5/ebb4266a8a4b4bbe84f5e510666ce934 [2021-12-22 12:06:51,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:06:51,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:06:51,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:06:51,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:06:51,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:06:51,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:06:51" (1/1) ... [2021-12-22 12:06:51,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12466649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:51, skipping insertion in model container [2021-12-22 12:06:51,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:06:51" (1/1) ... [2021-12-22 12:06:51,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:06:51,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:06:52,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2021-12-22 12:06:52,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:06:52,194 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:06:52,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2021-12-22 12:06:52,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:06:52,304 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:06:52,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52 WrapperNode [2021-12-22 12:06:52,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:06:52,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:06:52,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:06:52,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:06:52,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,362 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 779 [2021-12-22 12:06:52,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:06:52,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:06:52,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:06:52,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:06:52,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:06:52,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:06:52,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:06:52,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:06:52,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (1/1) ... [2021-12-22 12:06:52,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:06:52,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:06:52,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:06:52,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:06:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:06:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:06:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:06:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:06:52,591 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:06:52,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:06:53,133 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:06:53,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:06:53,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:06:53,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:06:53 BoogieIcfgContainer [2021-12-22 12:06:53,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:06:53,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:06:53,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:06:53,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:06:53,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:06:51" (1/3) ... [2021-12-22 12:06:53,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8a0079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:06:53, skipping insertion in model container [2021-12-22 12:06:53,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:06:52" (2/3) ... [2021-12-22 12:06:53,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8a0079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:06:53, skipping insertion in model container [2021-12-22 12:06:53,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:06:53" (3/3) ... [2021-12-22 12:06:53,147 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2021-12-22 12:06:53,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:06:53,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 12:06:53,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:06:53,186 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:06:53,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 12:06:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 205 states have (on average 1.721951219512195) internal successors, (353), 206 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-22 12:06:53,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:53,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:53,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash -374161539, now seen corresponding path program 1 times [2021-12-22 12:06:53,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:53,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109239371] [2021-12-22 12:06:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:53,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:53,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:53,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109239371] [2021-12-22 12:06:53,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109239371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:53,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:53,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:06:53,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496958627] [2021-12-22 12:06:53,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:53,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:06:53,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:06:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:53,529 INFO L87 Difference]: Start difference. First operand has 207 states, 205 states have (on average 1.721951219512195) internal successors, (353), 206 states have internal predecessors, (353), 0 states have call successors, (0), 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 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:53,853 INFO L93 Difference]: Finished difference Result 829 states and 1341 transitions. [2021-12-22 12:06:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:06:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-22 12:06:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:53,872 INFO L225 Difference]: With dead ends: 829 [2021-12-22 12:06:53,872 INFO L226 Difference]: Without dead ends: 714 [2021-12-22 12:06:53,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:06:53,882 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2307 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:53,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 2437 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:06:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-22 12:06:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 315. [2021-12-22 12:06:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4968152866242037) internal successors, (470), 314 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2021-12-22 12:06:53,956 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 80 [2021-12-22 12:06:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:53,957 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2021-12-22 12:06:53,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2021-12-22 12:06:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-22 12:06:53,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:53,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:06:53,967 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1024475534, now seen corresponding path program 1 times [2021-12-22 12:06:53,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:53,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620107019] [2021-12-22 12:06:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:53,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:54,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620107019] [2021-12-22 12:06:54,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620107019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:54,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:54,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:06:54,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183807697] [2021-12-22 12:06:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:54,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:06:54,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:06:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:54,194 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:54,486 INFO L93 Difference]: Finished difference Result 1371 states and 2113 transitions. [2021-12-22 12:06:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:06:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-22 12:06:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:54,491 INFO L225 Difference]: With dead ends: 1371 [2021-12-22 12:06:54,491 INFO L226 Difference]: Without dead ends: 1133 [2021-12-22 12:06:54,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:54,499 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1112 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:54,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 1479 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:06:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-22 12:06:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1125. [2021-12-22 12:06:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1124 states have (on average 1.5364768683274022) internal successors, (1727), 1124 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1727 transitions. [2021-12-22 12:06:54,603 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1727 transitions. Word has length 81 [2021-12-22 12:06:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:54,606 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1727 transitions. [2021-12-22 12:06:54,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1727 transitions. [2021-12-22 12:06:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 12:06:54,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:54,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:54,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:06:54,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:54,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:54,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1872628209, now seen corresponding path program 1 times [2021-12-22 12:06:54,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:54,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354459047] [2021-12-22 12:06:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:54,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:54,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:54,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354459047] [2021-12-22 12:06:54,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354459047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:54,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:54,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:06:54,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887123769] [2021-12-22 12:06:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:06:54,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:54,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:06:54,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:06:54,716 INFO L87 Difference]: Start difference. First operand 1125 states and 1727 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:55,045 INFO L93 Difference]: Finished difference Result 3049 states and 4737 transitions. [2021-12-22 12:06:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:06:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-22 12:06:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:55,052 INFO L225 Difference]: With dead ends: 3049 [2021-12-22 12:06:55,052 INFO L226 Difference]: Without dead ends: 1979 [2021-12-22 12:06:55,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:55,054 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1140 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:55,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 281 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:06:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-12-22 12:06:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1977. [2021-12-22 12:06:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.5455465587044535) internal successors, (3054), 1976 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 3054 transitions. [2021-12-22 12:06:55,200 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3054 transitions. Word has length 82 [2021-12-22 12:06:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:55,200 INFO L470 AbstractCegarLoop]: Abstraction has 1977 states and 3054 transitions. [2021-12-22 12:06:55,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3054 transitions. [2021-12-22 12:06:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 12:06:55,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:55,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:55,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:06:55,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1410777150, now seen corresponding path program 1 times [2021-12-22 12:06:55,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:55,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481182923] [2021-12-22 12:06:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:55,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:55,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:55,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481182923] [2021-12-22 12:06:55,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481182923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:55,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:55,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:06:55,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264004797] [2021-12-22 12:06:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:55,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:06:55,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:06:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:06:55,254 INFO L87 Difference]: Start difference. First operand 1977 states and 3054 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:55,623 INFO L93 Difference]: Finished difference Result 5484 states and 8533 transitions. [2021-12-22 12:06:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:06:55,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-22 12:06:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:55,636 INFO L225 Difference]: With dead ends: 5484 [2021-12-22 12:06:55,637 INFO L226 Difference]: Without dead ends: 3585 [2021-12-22 12:06:55,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:55,645 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1098 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:55,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 285 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:06:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-12-22 12:06:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3583. [2021-12-22 12:06:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.5466219988833054) internal successors, (5540), 3582 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5540 transitions. [2021-12-22 12:06:55,883 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5540 transitions. Word has length 82 [2021-12-22 12:06:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:55,884 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 5540 transitions. [2021-12-22 12:06:55,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5540 transitions. [2021-12-22 12:06:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 12:06:55,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:55,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:55,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:06:55,887 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1933266084, now seen corresponding path program 1 times [2021-12-22 12:06:55,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:55,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560100600] [2021-12-22 12:06:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:55,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:55,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:55,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560100600] [2021-12-22 12:06:55,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560100600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:55,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:55,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:06:55,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097520925] [2021-12-22 12:06:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:55,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:06:55,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:06:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:06:55,944 INFO L87 Difference]: Start difference. First operand 3583 states and 5540 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:56,514 INFO L93 Difference]: Finished difference Result 10066 states and 15649 transitions. [2021-12-22 12:06:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:06:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-22 12:06:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:56,534 INFO L225 Difference]: With dead ends: 10066 [2021-12-22 12:06:56,535 INFO L226 Difference]: Without dead ends: 6625 [2021-12-22 12:06:56,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:56,542 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1054 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:56,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 296 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:06:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2021-12-22 12:06:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 6623. [2021-12-22 12:06:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 1.5468136514648143) internal successors, (10243), 6622 states have internal predecessors, (10243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 10243 transitions. [2021-12-22 12:06:57,018 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 10243 transitions. Word has length 82 [2021-12-22 12:06:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:57,020 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 10243 transitions. [2021-12-22 12:06:57,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 10243 transitions. [2021-12-22 12:06:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 12:06:57,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:57,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:57,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:06:57,026 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1259416403, now seen corresponding path program 1 times [2021-12-22 12:06:57,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:57,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040612259] [2021-12-22 12:06:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:57,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:57,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040612259] [2021-12-22 12:06:57,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040612259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:57,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:57,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:06:57,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907051098] [2021-12-22 12:06:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:57,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:06:57,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:06:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:06:57,113 INFO L87 Difference]: Start difference. First operand 6623 states and 10243 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:06:58,064 INFO L93 Difference]: Finished difference Result 19244 states and 29834 transitions. [2021-12-22 12:06:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:06:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-22 12:06:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:06:58,108 INFO L225 Difference]: With dead ends: 19244 [2021-12-22 12:06:58,108 INFO L226 Difference]: Without dead ends: 12729 [2021-12-22 12:06:58,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:06:58,121 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1054 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:06:58,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 287 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:06:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2021-12-22 12:06:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 12727. [2021-12-22 12:06:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 12726 states have (on average 1.541882759704542) internal successors, (19622), 12726 states have internal predecessors, (19622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 19622 transitions. [2021-12-22 12:06:59,167 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 19622 transitions. Word has length 82 [2021-12-22 12:06:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:06:59,168 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 19622 transitions. [2021-12-22 12:06:59,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:06:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 19622 transitions. [2021-12-22 12:06:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-22 12:06:59,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:06:59,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:06:59,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:06:59,184 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:06:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:06:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash -407485162, now seen corresponding path program 1 times [2021-12-22 12:06:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:06:59,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47741701] [2021-12-22 12:06:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:06:59,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:06:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:06:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:06:59,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:06:59,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47741701] [2021-12-22 12:06:59,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47741701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:06:59,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:06:59,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:06:59,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979301819] [2021-12-22 12:06:59,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:06:59,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:06:59,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:06:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:06:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:06:59,254 INFO L87 Difference]: Start difference. First operand 12727 states and 19622 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:07:00,783 INFO L93 Difference]: Finished difference Result 35617 states and 54998 transitions. [2021-12-22 12:07:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:07:00,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-22 12:07:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:07:00,840 INFO L225 Difference]: With dead ends: 35617 [2021-12-22 12:07:00,840 INFO L226 Difference]: Without dead ends: 22954 [2021-12-22 12:07:00,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:07:00,856 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1151 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:07:00,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 286 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:07:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22954 states. [2021-12-22 12:07:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22954 to 22952. [2021-12-22 12:07:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22952 states, 22951 states have (on average 1.537449348612261) internal successors, (35286), 22951 states have internal predecessors, (35286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22952 states to 22952 states and 35286 transitions. [2021-12-22 12:07:02,738 INFO L78 Accepts]: Start accepts. Automaton has 22952 states and 35286 transitions. Word has length 83 [2021-12-22 12:07:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:07:02,738 INFO L470 AbstractCegarLoop]: Abstraction has 22952 states and 35286 transitions. [2021-12-22 12:07:02,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22952 states and 35286 transitions. [2021-12-22 12:07:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-22 12:07:02,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:07:02,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:07:02,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:07:02,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:07:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:07:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 174469786, now seen corresponding path program 1 times [2021-12-22 12:07:02,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:07:02,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782764008] [2021-12-22 12:07:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:07:02,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:07:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:07:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:07:02,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:07:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782764008] [2021-12-22 12:07:02,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782764008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:07:02,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:07:02,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:07:02,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145988906] [2021-12-22 12:07:02,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:07:02,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:07:02,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:07:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:07:02,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:07:02,827 INFO L87 Difference]: Start difference. First operand 22952 states and 35286 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:07:05,677 INFO L93 Difference]: Finished difference Result 45674 states and 69975 transitions. [2021-12-22 12:07:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:07:05,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-22 12:07:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:07:05,770 INFO L225 Difference]: With dead ends: 45674 [2021-12-22 12:07:05,770 INFO L226 Difference]: Without dead ends: 45672 [2021-12-22 12:07:05,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:07:05,788 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 286 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:07:05,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1181 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:07:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45672 states. [2021-12-22 12:07:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45672 to 23528. [2021-12-22 12:07:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23528 states, 23527 states have (on average 1.524291239852085) internal successors, (35862), 23527 states have internal predecessors, (35862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23528 states to 23528 states and 35862 transitions. [2021-12-22 12:07:08,123 INFO L78 Accepts]: Start accepts. Automaton has 23528 states and 35862 transitions. Word has length 83 [2021-12-22 12:07:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:07:08,124 INFO L470 AbstractCegarLoop]: Abstraction has 23528 states and 35862 transitions. [2021-12-22 12:07:08,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 23528 states and 35862 transitions. [2021-12-22 12:07:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 12:07:08,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:07:08,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:07:08,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:07:08,131 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:07:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:07:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1373936999, now seen corresponding path program 1 times [2021-12-22 12:07:08,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:07:08,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896968377] [2021-12-22 12:07:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:07:08,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:07:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:07:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:07:08,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:07:08,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896968377] [2021-12-22 12:07:08,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896968377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:07:08,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:07:08,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:07:08,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471120651] [2021-12-22 12:07:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:07:08,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 12:07:08,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:07:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 12:07:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 12:07:08,198 INFO L87 Difference]: Start difference. First operand 23528 states and 35862 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:07:11,687 INFO L93 Difference]: Finished difference Result 65932 states and 100224 transitions. [2021-12-22 12:07:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 12:07:11,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-12-22 12:07:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:07:11,797 INFO L225 Difference]: With dead ends: 65932 [2021-12-22 12:07:11,797 INFO L226 Difference]: Without dead ends: 43210 [2021-12-22 12:07:11,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 12:07:11,827 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 250 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:07:11,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 611 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:07:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43210 states. [2021-12-22 12:07:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43210 to 43208. [2021-12-22 12:07:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43208 states, 43207 states have (on average 1.5104496956511677) internal successors, (65262), 43207 states have internal predecessors, (65262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43208 states to 43208 states and 65262 transitions. [2021-12-22 12:07:15,135 INFO L78 Accepts]: Start accepts. Automaton has 43208 states and 65262 transitions. Word has length 84 [2021-12-22 12:07:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:07:15,135 INFO L470 AbstractCegarLoop]: Abstraction has 43208 states and 65262 transitions. [2021-12-22 12:07:15,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 43208 states and 65262 transitions. [2021-12-22 12:07:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 12:07:15,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:07:15,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:07:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:07:15,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:07:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:07:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1979820424, now seen corresponding path program 1 times [2021-12-22 12:07:15,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:07:15,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123199383] [2021-12-22 12:07:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:07:15,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:07:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:07:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:07:15,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:07:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123199383] [2021-12-22 12:07:15,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123199383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:07:15,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:07:15,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:07:15,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025101503] [2021-12-22 12:07:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:07:15,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:07:15,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:07:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:07:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:07:15,185 INFO L87 Difference]: Start difference. First operand 43208 states and 65262 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:07:20,410 INFO L93 Difference]: Finished difference Result 99075 states and 149695 transitions. [2021-12-22 12:07:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:07:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-22 12:07:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:07:20,525 INFO L225 Difference]: With dead ends: 99075 [2021-12-22 12:07:20,525 INFO L226 Difference]: Without dead ends: 60625 [2021-12-22 12:07:20,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:07:20,567 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 200 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:07:20,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 552 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:07:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60625 states. [2021-12-22 12:07:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60625 to 43038. [2021-12-22 12:07:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43038 states, 43037 states have (on average 1.4981527522829194) internal successors, (64476), 43037 states have internal predecessors, (64476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43038 states to 43038 states and 64476 transitions. [2021-12-22 12:07:24,683 INFO L78 Accepts]: Start accepts. Automaton has 43038 states and 64476 transitions. Word has length 85 [2021-12-22 12:07:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:07:24,683 INFO L470 AbstractCegarLoop]: Abstraction has 43038 states and 64476 transitions. [2021-12-22 12:07:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 43038 states and 64476 transitions. [2021-12-22 12:07:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 12:07:24,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:07:24,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:07:24,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:07:24,708 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:07:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:07:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1374524072, now seen corresponding path program 1 times [2021-12-22 12:07:24,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:07:24,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051488760] [2021-12-22 12:07:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:07:24,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:07:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:07:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:07:24,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:07:24,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051488760] [2021-12-22 12:07:24,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051488760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:07:24,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:07:24,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:07:24,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24874619] [2021-12-22 12:07:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:07:24,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:07:24,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:07:24,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:07:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:07:24,768 INFO L87 Difference]: Start difference. First operand 43038 states and 64476 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:07:30,056 INFO L93 Difference]: Finished difference Result 84823 states and 126979 transitions. [2021-12-22 12:07:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:07:30,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-22 12:07:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:07:30,181 INFO L225 Difference]: With dead ends: 84823 [2021-12-22 12:07:30,181 INFO L226 Difference]: Without dead ends: 55043 [2021-12-22 12:07:30,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:07:30,213 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 183 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:07:30,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 537 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:07:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55043 states. [2021-12-22 12:07:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55043 to 54558. [2021-12-22 12:07:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54558 states, 54557 states have (on average 1.4773722895320491) internal successors, (80601), 54557 states have internal predecessors, (80601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54558 states to 54558 states and 80601 transitions. [2021-12-22 12:07:35,304 INFO L78 Accepts]: Start accepts. Automaton has 54558 states and 80601 transitions. Word has length 85 [2021-12-22 12:07:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:07:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 54558 states and 80601 transitions. [2021-12-22 12:07:35,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:07:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 54558 states and 80601 transitions. [2021-12-22 12:07:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 12:07:35,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:07:35,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:07:35,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:07:35,311 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:07:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:07:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1153454217, now seen corresponding path program 1 times [2021-12-22 12:07:35,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:07:35,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820446651] [2021-12-22 12:07:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:07:35,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:07:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:07:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:07:35,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:07:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820446651] [2021-12-22 12:07:35,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820446651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:07:35,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:07:35,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:07:35,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107309935] [2021-12-22 12:07:35,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:07:35,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:07:35,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:07:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:07:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:07:35,349 INFO L87 Difference]: Start difference. First operand 54558 states and 80601 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)