./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem01_label27.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 c0605789e1718102dcd7d1e50c9243db5d0b882e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:44:30,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:44:30,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:44:30,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:44:30,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:44:30,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:44:30,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:44:30,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:44:30,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:44:30,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:44:30,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:44:31,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:44:31,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:44:31,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:44:31,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:44:31,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:44:31,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:44:31,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:44:31,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:44:31,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:44:31,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:44:31,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:44:31,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:44:31,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:44:31,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:44:31,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:44:31,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:44:31,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:44:31,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:44:31,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:44:31,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:44:31,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:44:31,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:44:31,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:44:31,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:44:31,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:44:31,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:44:31,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:44:31,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:44:31,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:44:31,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:44:31,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:44:31,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:44:31,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:44:31,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:44:31,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:44:31,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:44:31,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:44:31,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:44:31,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:44:31,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:44:31,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:44:31,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:44:31,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:44:31,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:44:31,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:44:31,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:44:31,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:44:31,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:44:31,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:44:31,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:44:31,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:44:31,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:44:31,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:44:31,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:44:31,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:44:31,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:44:31,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:44:31,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:44:31,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:44:31,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:44:31,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0605789e1718102dcd7d1e50c9243db5d0b882e [2020-10-25 19:44:31,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:44:31,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:44:31,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:44:31,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:44:31,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:44:31,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-10-25 19:44:31,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de28e4c04/841b797f36d84050814de04dff03dc1d/FLAGdfc10918b [2020-10-25 19:44:32,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:44:32,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-10-25 19:44:32,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de28e4c04/841b797f36d84050814de04dff03dc1d/FLAGdfc10918b [2020-10-25 19:44:32,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de28e4c04/841b797f36d84050814de04dff03dc1d [2020-10-25 19:44:32,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:44:32,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:44:32,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:44:32,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:44:32,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:44:32,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:44:32" (1/1) ... [2020-10-25 19:44:32,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1627fd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:32, skipping insertion in model container [2020-10-25 19:44:32,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:44:32" (1/1) ... [2020-10-25 19:44:32,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:44:32,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:44:33,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:44:33,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:44:33,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:44:33,687 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:44:33,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33 WrapperNode [2020-10-25 19:44:33,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:44:33,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:44:33,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:44:33,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:44:33,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:44:33,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:44:33,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:44:33,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:44:33,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... [2020-10-25 19:44:33,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:44:33,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:44:33,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:44:33,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:44:33,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:44:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:44:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:44:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:44:34,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:44:35,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:44:35,412 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 19:44:35,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:35 BoogieIcfgContainer [2020-10-25 19:44:35,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:44:35,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:44:35,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:44:35,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:44:35,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:44:32" (1/3) ... [2020-10-25 19:44:35,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be70d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:44:35, skipping insertion in model container [2020-10-25 19:44:35,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:44:33" (2/3) ... [2020-10-25 19:44:35,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be70d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:44:35, skipping insertion in model container [2020-10-25 19:44:35,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:35" (3/3) ... [2020-10-25 19:44:35,425 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label27.c [2020-10-25 19:44:35,438 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:44:35,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:44:35,458 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:44:35,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:44:35,488 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:44:35,488 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:44:35,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:44:35,488 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:44:35,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:44:35,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:44:35,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:44:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-10-25 19:44:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-25 19:44:35,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:35,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:35,532 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:35,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:35,539 INFO L82 PathProgramCache]: Analyzing trace with hash 857291087, now seen corresponding path program 1 times [2020-10-25 19:44:35,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:35,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956745804] [2020-10-25 19:44:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:35,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956745804] [2020-10-25 19:44:36,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:36,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:36,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460686238] [2020-10-25 19:44:36,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:36,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:36,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:36,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:36,034 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-10-25 19:44:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:36,885 INFO L93 Difference]: Finished difference Result 554 states and 941 transitions. [2020-10-25 19:44:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:36,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-10-25 19:44:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:36,903 INFO L225 Difference]: With dead ends: 554 [2020-10-25 19:44:36,904 INFO L226 Difference]: Without dead ends: 266 [2020-10-25 19:44:36,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-25 19:44:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-25 19:44:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-25 19:44:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-10-25 19:44:36,975 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 88 [2020-10-25 19:44:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:36,976 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-10-25 19:44:36,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-10-25 19:44:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-25 19:44:36,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:36,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:36,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:44:36,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:36,983 INFO L82 PathProgramCache]: Analyzing trace with hash -889245596, now seen corresponding path program 1 times [2020-10-25 19:44:36,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:36,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482739508] [2020-10-25 19:44:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:37,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482739508] [2020-10-25 19:44:37,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:37,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:37,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078851655] [2020-10-25 19:44:37,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:37,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:37,107 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-10-25 19:44:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:37,885 INFO L93 Difference]: Finished difference Result 792 states and 1135 transitions. [2020-10-25 19:44:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:37,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-10-25 19:44:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:37,892 INFO L225 Difference]: With dead ends: 792 [2020-10-25 19:44:37,893 INFO L226 Difference]: Without dead ends: 528 [2020-10-25 19:44:37,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-10-25 19:44:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2020-10-25 19:44:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-25 19:44:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 745 transitions. [2020-10-25 19:44:37,940 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 745 transitions. Word has length 94 [2020-10-25 19:44:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:37,940 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 745 transitions. [2020-10-25 19:44:37,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 745 transitions. [2020-10-25 19:44:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-25 19:44:37,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:37,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:37,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:44:37,946 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:37,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1594266780, now seen corresponding path program 1 times [2020-10-25 19:44:37,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:37,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959901309] [2020-10-25 19:44:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:38,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959901309] [2020-10-25 19:44:38,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:38,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:44:38,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024172260] [2020-10-25 19:44:38,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:38,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:38,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:38,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:38,154 INFO L87 Difference]: Start difference. First operand 528 states and 745 transitions. Second operand 3 states. [2020-10-25 19:44:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:38,900 INFO L93 Difference]: Finished difference Result 1316 states and 1853 transitions. [2020-10-25 19:44:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:38,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-10-25 19:44:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:38,914 INFO L225 Difference]: With dead ends: 1316 [2020-10-25 19:44:38,914 INFO L226 Difference]: Without dead ends: 790 [2020-10-25 19:44:38,916 INFO L677 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 [2020-10-25 19:44:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-10-25 19:44:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2020-10-25 19:44:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-10-25 19:44:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1067 transitions. [2020-10-25 19:44:38,987 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1067 transitions. Word has length 95 [2020-10-25 19:44:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:38,988 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 1067 transitions. [2020-10-25 19:44:38,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1067 transitions. [2020-10-25 19:44:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-25 19:44:38,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:38,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:38,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:44:38,995 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:38,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2106967334, now seen corresponding path program 1 times [2020-10-25 19:44:38,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:38,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067093004] [2020-10-25 19:44:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:39,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067093004] [2020-10-25 19:44:39,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:39,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:39,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432559710] [2020-10-25 19:44:39,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:39,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:39,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:39,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:39,073 INFO L87 Difference]: Start difference. First operand 790 states and 1067 transitions. Second operand 3 states. [2020-10-25 19:44:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:39,824 INFO L93 Difference]: Finished difference Result 2364 states and 3196 transitions. [2020-10-25 19:44:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:39,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-10-25 19:44:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:39,835 INFO L225 Difference]: With dead ends: 2364 [2020-10-25 19:44:39,835 INFO L226 Difference]: Without dead ends: 1576 [2020-10-25 19:44:39,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-25 19:44:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-10-25 19:44:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-25 19:44:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1652 transitions. [2020-10-25 19:44:39,903 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1652 transitions. Word has length 99 [2020-10-25 19:44:39,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:39,907 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1652 transitions. [2020-10-25 19:44:39,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1652 transitions. [2020-10-25 19:44:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-25 19:44:39,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:39,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:39,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:44:39,921 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:39,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:39,922 INFO L82 PathProgramCache]: Analyzing trace with hash 753848800, now seen corresponding path program 1 times [2020-10-25 19:44:39,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:39,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538658750] [2020-10-25 19:44:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:40,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538658750] [2020-10-25 19:44:40,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:40,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:44:40,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409990198] [2020-10-25 19:44:40,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:44:40,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:40,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:44:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:44:40,064 INFO L87 Difference]: Start difference. First operand 1314 states and 1652 transitions. Second operand 4 states. [2020-10-25 19:44:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:41,205 INFO L93 Difference]: Finished difference Result 4067 states and 5160 transitions. [2020-10-25 19:44:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:44:41,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-25 19:44:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:41,223 INFO L225 Difference]: With dead ends: 4067 [2020-10-25 19:44:41,224 INFO L226 Difference]: Without dead ends: 2755 [2020-10-25 19:44:41,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:44:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-10-25 19:44:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2493. [2020-10-25 19:44:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-25 19:44:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3005 transitions. [2020-10-25 19:44:41,315 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3005 transitions. Word has length 103 [2020-10-25 19:44:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:41,316 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 3005 transitions. [2020-10-25 19:44:41,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:44:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3005 transitions. [2020-10-25 19:44:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-25 19:44:41,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:41,321 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:41,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:44:41,322 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:41,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:41,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362651, now seen corresponding path program 1 times [2020-10-25 19:44:41,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:41,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188100732] [2020-10-25 19:44:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:44:41,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188100732] [2020-10-25 19:44:41,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:41,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:44:41,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063190013] [2020-10-25 19:44:41,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:41,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:41,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:41,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:41,478 INFO L87 Difference]: Start difference. First operand 2493 states and 3005 transitions. Second operand 3 states. [2020-10-25 19:44:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:42,154 INFO L93 Difference]: Finished difference Result 4591 states and 5561 transitions. [2020-10-25 19:44:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:42,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-10-25 19:44:42,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:42,165 INFO L225 Difference]: With dead ends: 4591 [2020-10-25 19:44:42,165 INFO L226 Difference]: Without dead ends: 1969 [2020-10-25 19:44:42,169 INFO L677 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 [2020-10-25 19:44:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2020-10-25 19:44:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1707. [2020-10-25 19:44:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-10-25 19:44:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1891 transitions. [2020-10-25 19:44:42,217 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1891 transitions. Word has length 110 [2020-10-25 19:44:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:42,217 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 1891 transitions. [2020-10-25 19:44:42,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1891 transitions. [2020-10-25 19:44:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-25 19:44:42,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:42,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:42,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:44:42,223 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 837175256, now seen corresponding path program 1 times [2020-10-25 19:44:42,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:42,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081864545] [2020-10-25 19:44:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-25 19:44:42,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081864545] [2020-10-25 19:44:42,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:44:42,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 19:44:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182682743] [2020-10-25 19:44:42,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:42,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:42,330 INFO L87 Difference]: Start difference. First operand 1707 states and 1891 transitions. Second operand 3 states. [2020-10-25 19:44:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:42,902 INFO L93 Difference]: Finished difference Result 3674 states and 4064 transitions. [2020-10-25 19:44:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:42,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-10-25 19:44:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:42,915 INFO L225 Difference]: With dead ends: 3674 [2020-10-25 19:44:42,915 INFO L226 Difference]: Without dead ends: 1838 [2020-10-25 19:44:42,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:44:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-10-25 19:44:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2020-10-25 19:44:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-10-25 19:44:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2013 transitions. [2020-10-25 19:44:42,973 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2013 transitions. Word has length 144 [2020-10-25 19:44:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:42,973 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2013 transitions. [2020-10-25 19:44:42,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2013 transitions. [2020-10-25 19:44:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-25 19:44:42,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:42,978 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:42,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:44:42,979 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1422368110, now seen corresponding path program 1 times [2020-10-25 19:44:42,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:42,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377854962] [2020-10-25 19:44:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-25 19:44:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377854962] [2020-10-25 19:44:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046130363] [2020-10-25 19:44:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:44:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:43,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 19:44:43,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:44:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-25 19:44:43,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:44:43,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 19:44:43,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895478166] [2020-10-25 19:44:43,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:43,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:44:43,581 INFO L87 Difference]: Start difference. First operand 1838 states and 2013 transitions. Second operand 3 states. [2020-10-25 19:44:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:44,193 INFO L93 Difference]: Finished difference Result 3936 states and 4325 transitions. [2020-10-25 19:44:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:44,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-25 19:44:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:44,206 INFO L225 Difference]: With dead ends: 3936 [2020-10-25 19:44:44,206 INFO L226 Difference]: Without dead ends: 2100 [2020-10-25 19:44:44,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:44:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2020-10-25 19:44:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2020-10-25 19:44:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-10-25 19:44:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2140 transitions. [2020-10-25 19:44:44,259 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2140 transitions. Word has length 148 [2020-10-25 19:44:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:44,261 INFO L481 AbstractCegarLoop]: Abstraction has 1969 states and 2140 transitions. [2020-10-25 19:44:44,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2140 transitions. [2020-10-25 19:44:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-25 19:44:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:44:44,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:44:44,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-25 19:44:44,481 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:44:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:44:44,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1872669620, now seen corresponding path program 1 times [2020-10-25 19:44:44,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:44:44,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869776855] [2020-10-25 19:44:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:44:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-25 19:44:44,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869776855] [2020-10-25 19:44:44,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822016862] [2020-10-25 19:44:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:44:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:44:44,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 19:44:44,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:44:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-25 19:44:44,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:44:44,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 19:44:44,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233618862] [2020-10-25 19:44:44,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:44:44,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:44:44,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:44:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:44:44,957 INFO L87 Difference]: Start difference. First operand 1969 states and 2140 transitions. Second operand 3 states. [2020-10-25 19:44:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:44:45,658 INFO L93 Difference]: Finished difference Result 4589 states and 4986 transitions. [2020-10-25 19:44:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:44:45,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-10-25 19:44:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:44:45,660 INFO L225 Difference]: With dead ends: 4589 [2020-10-25 19:44:45,660 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:44:45,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:44:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:44:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:44:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:44:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:44:45,672 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2020-10-25 19:44:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:44:45,673 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:44:45,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:44:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:44:45,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:44:45,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:44:45,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:44:46,106 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-10-25 19:44:46,240 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-10-25 19:44:46,244 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-25 19:44:46,245 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-25 19:44:46,246 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-25 19:44:46,247 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,247 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,247 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,247 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,247 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,248 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,248 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-25 19:44:46,248 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-25 19:44:46,248 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-25 19:44:46,249 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-25 19:44:46,249 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-25 19:44:46,249 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-25 19:44:46,249 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-25 19:44:46,249 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,250 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-25 19:44:46,251 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-25 19:44:46,252 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-25 19:44:46,252 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-25 19:44:46,252 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-25 19:44:46,252 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-25 19:44:46,252 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-25 19:44:46,253 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-25 19:44:46,253 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-25 19:44:46,253 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-25 19:44:46,253 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-25 19:44:46,253 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,254 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-25 19:44:46,255 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-25 19:44:46,256 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-25 19:44:46,256 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-25 19:44:46,256 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-25 19:44:46,256 INFO L270 CegarLoopResult]: At program point L576(lines 32 577) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 4)) (.cse6 (= ~a17~0 1)) (.cse3 (= ~a21~0 1)) (.cse5 (= ~a20~0 1)) (.cse0 (= ~a7~0 0)) (.cse2 (= ~a7~0 1)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse4 .cse5 .cse0 .cse6) (and (<= ~a8~0 14) .cse2) (and .cse3 .cse5 .cse0) (and .cse2 .cse1))) [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,257 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-25 19:44:46,258 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-25 19:44:46,258 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-25 19:44:46,258 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-25 19:44:46,258 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-25 19:44:46,258 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-25 19:44:46,259 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-25 19:44:46,260 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-25 19:44:46,260 INFO L277 CegarLoopResult]: At program point L579(lines 579 596) the Hoare annotation is: true [2020-10-25 19:44:46,260 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,260 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,260 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,260 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,261 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,261 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-25 19:44:46,261 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-25 19:44:46,261 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-25 19:44:46,261 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:44:46,262 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-25 19:44:46,263 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-25 19:44:46,264 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-25 19:44:46,265 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-25 19:44:46,266 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-25 19:44:46,266 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,266 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 4)) (.cse6 (= ~a17~0 1)) (.cse3 (= ~a21~0 1)) (.cse5 (= ~a20~0 1)) (.cse0 (= ~a7~0 0)) (.cse2 (= ~a7~0 1)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse4 .cse5 .cse0 .cse6) (and (<= ~a8~0 14) .cse2) (and .cse3 .cse5 .cse0) (and .cse2 .cse1))) [2020-10-25 19:44:46,266 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,266 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-25 19:44:46,267 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-25 19:44:46,268 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-25 19:44:46,269 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-25 19:44:46,270 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-25 19:44:46,271 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-25 19:44:46,271 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-25 19:44:46,271 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:44:46,271 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-25 19:44:46,271 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-25 19:44:46,272 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,273 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,273 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-25 19:44:46,273 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-25 19:44:46,273 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-25 19:44:46,273 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-25 19:44:46,274 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-25 19:44:46,275 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-25 19:44:46,275 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-25 19:44:46,275 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:44:46,275 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 19:44:46,275 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,276 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,276 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,276 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,276 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,276 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-25 19:44:46,277 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-25 19:44:46,278 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-25 19:44:46,279 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-25 19:44:46,279 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-25 19:44:46,279 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-25 19:44:46,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:44:46 BoogieIcfgContainer [2020-10-25 19:44:46,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:44:46,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:44:46,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:44:46,303 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:44:46,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:44:35" (3/4) ... [2020-10-25 19:44:46,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:44:46,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 19:44:46,332 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:44:46,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:44:46,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:44:46,504 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:44:46,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:44:46,506 INFO L168 Benchmark]: Toolchain (without parser) took 13675.49 ms. Allocated memory was 56.6 MB in the beginning and 230.7 MB in the end (delta: 174.1 MB). Free memory was 32.6 MB in the beginning and 139.5 MB in the end (delta: -106.9 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,506 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:44:46,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.73 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 34.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.68 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 28.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,508 INFO L168 Benchmark]: Boogie Preprocessor took 71.86 ms. Allocated memory is still 56.6 MB. Free memory was 28.5 MB in the beginning and 24.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,508 INFO L168 Benchmark]: RCFGBuilder took 1521.19 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 24.0 MB in the beginning and 32.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,509 INFO L168 Benchmark]: TraceAbstraction took 10884.79 ms. Allocated memory was 77.6 MB in the beginning and 230.7 MB in the end (delta: 153.1 MB). Free memory was 31.8 MB in the beginning and 155.3 MB in the end (delta: -123.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,509 INFO L168 Benchmark]: Witness Printer took 202.18 ms. Allocated memory is still 230.7 MB. Free memory was 155.3 MB in the beginning and 139.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:44:46,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 847.73 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 34.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.68 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 28.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.86 ms. Allocated memory is still 56.6 MB. Free memory was 28.5 MB in the beginning and 24.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1521.19 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 24.0 MB in the beginning and 32.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10884.79 ms. Allocated memory was 77.6 MB in the beginning and 230.7 MB in the end (delta: 153.1 MB). Free memory was 31.8 MB in the beginning and 155.3 MB in the end (delta: -123.5 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.1 GB. * Witness Printer took 202.18 ms. Allocated memory is still 230.7 MB. Free memory was 155.3 MB in the beginning and 139.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 579]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((a7 == 0 && a20 <= 0) || ((((a7 == 1 && a21 == 1) && a16 <= 4) && a20 == 1) && a17 == 1)) || (((a16 <= 4 && a20 == 1) && a7 == 0) && a17 == 1)) || (a8 <= 14 && a7 == 1)) || ((a21 == 1 && a20 == 1) && a7 == 0)) || (a7 == 1 && a20 <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((a7 == 0 && a20 <= 0) || ((((a7 == 1 && a21 == 1) && a16 <= 4) && a20 == 1) && a17 == 1)) || (((a16 <= 4 && a20 == 1) && a7 == 0) && a17 == 1)) || (a8 <= 14 && a7 == 1)) || ((a21 == 1 && a20 == 1) && a7 == 0)) || (a7 == 1 && a20 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.4s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 926 SDtfs, 1155 SDslu, 52 SDs, 0 SdLazy, 3151 SolverSat, 595 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2493occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 917 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 910 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1331 NumberOfCodeBlocks, 1331 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1320 ConstructedInterpolants, 0 QuantifiedInterpolants, 354899 SizeOfPredicates, 2 NumberOfNonLiveVariables, 677 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 556/562 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...