./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer --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 662534f4746003a6d2cd07cf74c03b390809f7a7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:35,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:35,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:35,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:35,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:35,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:35,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:35,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:35,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:35,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:35,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:35,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:35,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:35,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:35,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:35,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:35,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:35,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:35,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:35,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:35,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:35,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:35,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:35,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:35,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:35,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:35,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:35,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:35,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:35,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:35,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:35,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:35,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:35,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:35,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:35,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:35,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:35,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:35,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:35,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:35,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:35,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:35,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:35,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:35,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:35,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:35,534 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:35,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:35,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:35,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:35,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:35,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:35,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:35,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:35,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:35,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:35,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:35,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:35,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:35,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:35,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:35,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:35,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:35,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:35,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:35,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:35,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:35,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:35,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:35,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:35,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:35,540 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:/tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 662534f4746003a6d2cd07cf74c03b390809f7a7 [2020-11-28 02:57:35,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:35,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:35,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:35,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:35,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:35,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2020-11-28 02:57:36,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/data/f62568bb5/800fa7f27ce24b7b90493e4fba459864/FLAG3eee62b8c [2020-11-28 02:57:36,614 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:36,615 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2020-11-28 02:57:36,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/data/f62568bb5/800fa7f27ce24b7b90493e4fba459864/FLAG3eee62b8c [2020-11-28 02:57:36,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/data/f62568bb5/800fa7f27ce24b7b90493e4fba459864 [2020-11-28 02:57:36,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:36,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:36,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:36,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:36,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:36,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c870362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36, skipping insertion in model container [2020-11-28 02:57:36,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:37,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:37,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:37,442 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:37,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:37,596 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:37,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37 WrapperNode [2020-11-28 02:57:37,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:37,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:37,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:37,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:37,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:37,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:37,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:37,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:37,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... [2020-11-28 02:57:37,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:37,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:37,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:37,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:37,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/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 [2020-11-28 02:57:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:39,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:39,523 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:57:39,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:39 BoogieIcfgContainer [2020-11-28 02:57:39,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:39,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:39,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:39,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:39,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:36" (1/3) ... [2020-11-28 02:57:39,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455758bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:39, skipping insertion in model container [2020-11-28 02:57:39,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:37" (2/3) ... [2020-11-28 02:57:39,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455758bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:39, skipping insertion in model container [2020-11-28 02:57:39,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:39" (3/3) ... [2020-11-28 02:57:39,542 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-11-28 02:57:39,553 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:39,558 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:39,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:39,611 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:39,612 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:39,613 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:39,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:39,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:39,613 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:39,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:39,613 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states. [2020-11-28 02:57:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-28 02:57:39,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:39,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:39,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:39,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash 499493077, now seen corresponding path program 1 times [2020-11-28 02:57:39,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:39,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881507899] [2020-11-28 02:57:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:40,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881507899] [2020-11-28 02:57:40,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:40,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:40,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173675965] [2020-11-28 02:57:40,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:40,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:40,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:40,147 INFO L87 Difference]: Start difference. First operand 228 states. Second operand 3 states. [2020-11-28 02:57:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:41,278 INFO L93 Difference]: Finished difference Result 618 states and 1060 transitions. [2020-11-28 02:57:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:41,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-11-28 02:57:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:41,300 INFO L225 Difference]: With dead ends: 618 [2020-11-28 02:57:41,304 INFO L226 Difference]: Without dead ends: 316 [2020-11-28 02:57:41,313 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 [2020-11-28 02:57:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-11-28 02:57:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 309. [2020-11-28 02:57:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-11-28 02:57:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 450 transitions. [2020-11-28 02:57:41,370 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 450 transitions. Word has length 100 [2020-11-28 02:57:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:41,371 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 450 transitions. [2020-11-28 02:57:41,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 450 transitions. [2020-11-28 02:57:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-28 02:57:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:41,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:41,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:41,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:41,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1714498056, now seen corresponding path program 1 times [2020-11-28 02:57:41,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:41,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511491282] [2020-11-28 02:57:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:41,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511491282] [2020-11-28 02:57:41,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:41,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:41,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042570792] [2020-11-28 02:57:41,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:41,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:41,501 INFO L87 Difference]: Start difference. First operand 309 states and 450 transitions. Second operand 3 states. [2020-11-28 02:57:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:42,307 INFO L93 Difference]: Finished difference Result 900 states and 1316 transitions. [2020-11-28 02:57:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:42,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-11-28 02:57:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:42,312 INFO L225 Difference]: With dead ends: 900 [2020-11-28 02:57:42,312 INFO L226 Difference]: Without dead ends: 593 [2020-11-28 02:57:42,314 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 [2020-11-28 02:57:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-11-28 02:57:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-11-28 02:57:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-11-28 02:57:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 762 transitions. [2020-11-28 02:57:42,360 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 762 transitions. Word has length 108 [2020-11-28 02:57:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:42,360 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 762 transitions. [2020-11-28 02:57:42,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 762 transitions. [2020-11-28 02:57:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-11-28 02:57:42,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:42,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:42,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:42,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1539181656, now seen corresponding path program 1 times [2020-11-28 02:57:42,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:42,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078621918] [2020-11-28 02:57:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:42,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078621918] [2020-11-28 02:57:42,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:42,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:42,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340922852] [2020-11-28 02:57:42,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:42,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:42,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:42,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:42,584 INFO L87 Difference]: Start difference. First operand 591 states and 762 transitions. Second operand 3 states. [2020-11-28 02:57:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:43,377 INFO L93 Difference]: Finished difference Result 1750 states and 2260 transitions. [2020-11-28 02:57:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:43,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-11-28 02:57:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:43,388 INFO L225 Difference]: With dead ends: 1750 [2020-11-28 02:57:43,393 INFO L226 Difference]: Without dead ends: 1161 [2020-11-28 02:57:43,394 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 [2020-11-28 02:57:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-11-28 02:57:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1014. [2020-11-28 02:57:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-11-28 02:57:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1280 transitions. [2020-11-28 02:57:43,438 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1280 transitions. Word has length 109 [2020-11-28 02:57:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:43,439 INFO L481 AbstractCegarLoop]: Abstraction has 1014 states and 1280 transitions. [2020-11-28 02:57:43,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1280 transitions. [2020-11-28 02:57:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 02:57:43,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:43,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:43,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:57:43,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:43,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1317910021, now seen corresponding path program 1 times [2020-11-28 02:57:43,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:43,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985485003] [2020-11-28 02:57:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:57:43,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985485003] [2020-11-28 02:57:43,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:43,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:43,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036876320] [2020-11-28 02:57:43,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:43,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:43,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:43,614 INFO L87 Difference]: Start difference. First operand 1014 states and 1280 transitions. Second operand 3 states. [2020-11-28 02:57:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:44,378 INFO L93 Difference]: Finished difference Result 2447 states and 3080 transitions. [2020-11-28 02:57:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:44,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-11-28 02:57:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:44,393 INFO L225 Difference]: With dead ends: 2447 [2020-11-28 02:57:44,393 INFO L226 Difference]: Without dead ends: 1435 [2020-11-28 02:57:44,395 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 [2020-11-28 02:57:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-11-28 02:57:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1435. [2020-11-28 02:57:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2020-11-28 02:57:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1748 transitions. [2020-11-28 02:57:44,427 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1748 transitions. Word has length 113 [2020-11-28 02:57:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:44,428 INFO L481 AbstractCegarLoop]: Abstraction has 1435 states and 1748 transitions. [2020-11-28 02:57:44,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1748 transitions. [2020-11-28 02:57:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-28 02:57:44,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:44,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:44,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:57:44,432 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:44,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1219004059, now seen corresponding path program 1 times [2020-11-28 02:57:44,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:44,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91629970] [2020-11-28 02:57:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:44,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91629970] [2020-11-28 02:57:44,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517903316] [2020-11-28 02:57:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/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 [2020-11-28 02:57:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:44,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:44,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:57:45,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:45,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-28 02:57:45,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975387107] [2020-11-28 02:57:45,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:45,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:45,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:45,044 INFO L87 Difference]: Start difference. First operand 1435 states and 1748 transitions. Second operand 3 states. [2020-11-28 02:57:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:45,986 INFO L93 Difference]: Finished difference Result 3999 states and 4915 transitions. [2020-11-28 02:57:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:45,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-11-28 02:57:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:46,002 INFO L225 Difference]: With dead ends: 3999 [2020-11-28 02:57:46,002 INFO L226 Difference]: Without dead ends: 2566 [2020-11-28 02:57:46,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:46,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2020-11-28 02:57:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2005. [2020-11-28 02:57:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2005 states. [2020-11-28 02:57:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2396 transitions. [2020-11-28 02:57:46,064 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2396 transitions. Word has length 127 [2020-11-28 02:57:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:46,064 INFO L481 AbstractCegarLoop]: Abstraction has 2005 states and 2396 transitions. [2020-11-28 02:57:46,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2396 transitions. [2020-11-28 02:57:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-11-28 02:57:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:46,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:46,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:46,288 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 50606383, now seen corresponding path program 1 times [2020-11-28 02:57:46,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:46,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135498744] [2020-11-28 02:57:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-28 02:57:46,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135498744] [2020-11-28 02:57:46,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29683140] [2020-11-28 02:57:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/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 [2020-11-28 02:57:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 02:57:46,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:46,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-11-28 02:57:46,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348559271] [2020-11-28 02:57:46,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:46,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:46,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:46,592 INFO L87 Difference]: Start difference. First operand 2005 states and 2396 transitions. Second operand 3 states. [2020-11-28 02:57:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:47,043 INFO L93 Difference]: Finished difference Result 3855 states and 4613 transitions. [2020-11-28 02:57:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:47,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-11-28 02:57:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:47,055 INFO L225 Difference]: With dead ends: 3855 [2020-11-28 02:57:47,056 INFO L226 Difference]: Without dead ends: 1852 [2020-11-28 02:57:47,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-11-28 02:57:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1711. [2020-11-28 02:57:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-11-28 02:57:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2038 transitions. [2020-11-28 02:57:47,107 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2038 transitions. Word has length 134 [2020-11-28 02:57:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:47,109 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2038 transitions. [2020-11-28 02:57:47,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2038 transitions. [2020-11-28 02:57:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-28 02:57:47,114 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:47,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 02:57:47,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:47,328 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:47,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1215265765, now seen corresponding path program 1 times [2020-11-28 02:57:47,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:47,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123724611] [2020-11-28 02:57:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:57:47,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123724611] [2020-11-28 02:57:47,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:47,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:47,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141088766] [2020-11-28 02:57:47,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:47,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:47,526 INFO L87 Difference]: Start difference. First operand 1711 states and 2038 transitions. Second operand 3 states. [2020-11-28 02:57:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:48,178 INFO L93 Difference]: Finished difference Result 3132 states and 3762 transitions. [2020-11-28 02:57:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:48,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-28 02:57:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:48,186 INFO L225 Difference]: With dead ends: 3132 [2020-11-28 02:57:48,186 INFO L226 Difference]: Without dead ends: 1421 [2020-11-28 02:57:48,188 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 [2020-11-28 02:57:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2020-11-28 02:57:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2020-11-28 02:57:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1421 states. [2020-11-28 02:57:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1593 transitions. [2020-11-28 02:57:48,231 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1593 transitions. Word has length 171 [2020-11-28 02:57:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:48,232 INFO L481 AbstractCegarLoop]: Abstraction has 1421 states and 1593 transitions. [2020-11-28 02:57:48,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1593 transitions. [2020-11-28 02:57:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-11-28 02:57:48,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:48,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 02:57:48,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:57:48,237 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -269549523, now seen corresponding path program 1 times [2020-11-28 02:57:48,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:48,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082486705] [2020-11-28 02:57:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:48,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082486705] [2020-11-28 02:57:48,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098033687] [2020-11-28 02:57:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:48,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:48,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:57:48,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:48,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-28 02:57:48,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940622688] [2020-11-28 02:57:48,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:48,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:48,758 INFO L87 Difference]: Start difference. First operand 1421 states and 1593 transitions. Second operand 3 states. [2020-11-28 02:57:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:49,579 INFO L93 Difference]: Finished difference Result 2979 states and 3359 transitions. [2020-11-28 02:57:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:49,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-11-28 02:57:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:49,580 INFO L225 Difference]: With dead ends: 2979 [2020-11-28 02:57:49,581 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:49,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:49,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 174 [2020-11-28 02:57:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:49,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:49,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:49,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:57:49,991 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-11-28 02:57:50,118 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L433-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 02:57:50,122 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L436-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L439-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 02:57:50,123 INFO L274 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L308(lines 308 317) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L308-2(lines 308 317) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L442-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L575(line 575) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 02:57:50,124 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L511-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L445-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L578(line 578) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L248(lines 248 256) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L248-2(lines 248 256) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L514-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,125 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L583-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L584(line 584) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 02:57:50,126 INFO L274 CegarLoopResult]: For program point L586-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L454-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,127 INFO L274 CegarLoopResult]: For program point L391(lines 391 397) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L325(lines 325 336) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L391-2(lines 391 397) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L325-2(lines 325 336) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L593(line 593) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-11-28 02:57:50,128 INFO L274 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L595-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L463-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L596(line 596) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 02:57:50,129 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L599(line 599) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L535-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L602(line 602) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-11-28 02:57:50,130 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L272(lines 272 284) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L272-2(lines 272 284) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L538-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L605(line 605) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L342(lines 342 345) no Hoare annotation was computed. [2020-11-28 02:57:50,131 INFO L274 CegarLoopResult]: For program point L342-2(lines 342 345) no Hoare annotation was computed. [2020-11-28 02:57:50,132 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 02:57:50,132 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 02:57:50,132 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse1 (<= ~a17~0 8))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse0 (<= ~a28~0 7) .cse1) (and .cse0 (= ~a25~0 1) (not (= ~a11~0 1)) .cse1) (and (<= ~a19~0 0) .cse1))) [2020-11-28 02:57:50,132 INFO L274 CegarLoopResult]: For program point L541-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,132 INFO L274 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L213(lines 213 220) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L274 CegarLoopResult]: For program point L213-2(lines 213 220) no Hoare annotation was computed. [2020-11-28 02:57:50,133 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L544-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 02:57:50,134 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L348(lines 348 357) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L348-2(lines 348 357) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L547-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,135 INFO L274 CegarLoopResult]: For program point L85(lines 85 90) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point L85-2(lines 85 90) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 02:57:50,136 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 02:57:50,137 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse1 (<= ~a17~0 8))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse0 (<= ~a28~0 7) .cse1) (and .cse0 (= ~a25~0 1) (not (= ~a11~0 1)) .cse1) (and (<= ~a19~0 0) .cse1))) [2020-11-28 02:57:50,137 INFO L274 CegarLoopResult]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,137 INFO L274 CegarLoopResult]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,137 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 02:57:50,137 INFO L274 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 02:57:50,138 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L93(lines 93 99) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 99) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L424(lines 424 426) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L424-2(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-11-28 02:57:50,139 INFO L274 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L427-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-11-28 02:57:50,146 INFO L274 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L562-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L430-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 02:57:50,147 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 02:57:50,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:50 BoogieIcfgContainer [2020-11-28 02:57:50,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:50,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:50,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:50,169 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:50,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:39" (3/4) ... [2020-11-28 02:57:50,174 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:50,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 02:57:50,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:50,202 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:50,204 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:50,366 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a4fe6809-7f92-444c-99d4-0eb7e42d9520/bin/uautomizer/witness.graphml [2020-11-28 02:57:50,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:50,367 INFO L168 Benchmark]: Toolchain (without parser) took 13433.22 ms. Allocated memory was 83.9 MB in the beginning and 239.1 MB in the end (delta: 155.2 MB). Free memory was 53.0 MB in the beginning and 134.9 MB in the end (delta: -81.9 MB). Peak memory consumption was 71.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,368 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:50,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.71 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.8 MB in the beginning and 62.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.72 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 56.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,369 INFO L168 Benchmark]: Boogie Preprocessor took 93.57 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 52.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,370 INFO L168 Benchmark]: RCFGBuilder took 1752.57 ms. Allocated memory is still 100.7 MB. Free memory was 52.4 MB in the beginning and 63.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,370 INFO L168 Benchmark]: TraceAbstraction took 10634.54 ms. Allocated memory was 100.7 MB in the beginning and 239.1 MB in the end (delta: 138.4 MB). Free memory was 63.6 MB in the beginning and 149.6 MB in the end (delta: -85.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,371 INFO L168 Benchmark]: Witness Printer took 197.48 ms. Allocated memory is still 239.1 MB. Free memory was 149.6 MB in the beginning and 134.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:50,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 656.71 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.8 MB in the beginning and 62.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.72 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 56.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.57 ms. Allocated memory is still 100.7 MB. Free memory was 56.6 MB in the beginning and 52.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1752.57 ms. Allocated memory is still 100.7 MB. Free memory was 52.4 MB in the beginning and 63.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10634.54 ms. Allocated memory was 100.7 MB in the beginning and 239.1 MB in the end (delta: 138.4 MB). Free memory was 63.6 MB in the beginning and 149.6 MB in the end (delta: -85.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * Witness Printer took 197.48 ms. Allocated memory is still 239.1 MB. Free memory was 149.6 MB in the beginning and 134.9 MB in the end (delta: 14.7 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: 12]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a19 == 1) && a17 <= 8) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && a25 == 1) && !(a11 == 1)) && a17 <= 8)) || (a19 <= 0 && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a19 == 1) && a17 <= 8) || (((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && a25 == 1) && !(a11 == 1)) && a17 <= 8)) || (a19 <= 0 && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1006 SDtfs, 846 SDslu, 118 SDs, 0 SdLazy, 2805 SolverSat, 525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 455 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2005occurred 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: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 858 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 91 HoareAnnotationTreeSize, 3 FomulaSimplifications, 456 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1471 NumberOfCodeBlocks, 1471 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1460 ConstructedInterpolants, 0 QuantifiedInterpolants, 1003519 SizeOfPredicates, 2 NumberOfNonLiveVariables, 878 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 386/421 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...