./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/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 37d0ed05d77a0379c9ed98058bf2f327252773ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 16:03:43,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:03:43,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:03:43,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:03:43,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:03:43,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:03:43,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:03:43,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:03:43,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:03:43,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:03:43,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:03:43,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:03:43,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:03:43,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:03:43,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:03:43,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:03:43,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:03:43,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:03:43,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:03:43,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:03:43,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:03:43,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:03:43,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:03:43,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:03:43,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:03:43,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:03:43,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:03:43,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:03:43,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:03:43,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:03:43,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:03:43,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:03:43,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:03:43,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:03:43,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:03:43,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:03:43,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:03:43,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:03:43,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:03:43,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:03:43,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:03:43,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 16:03:43,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:03:43,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:03:43,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:03:43,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:03:43,726 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:03:43,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:03:43,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:03:43,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:03:43,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:03:43,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:03:43,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:03:43,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:03:43,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:03:43,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:03:43,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:03:43,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:03:43,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:03:43,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:03:43,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:03:43,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:03:43,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:03:43,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:03:43,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:03:43,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:03:43,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:03:43,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:03:43,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:03:43,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:03:43,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:03:43,734 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_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-12-01 16:03:44,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:03:44,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:03:44,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:03:44,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:03:44,114 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:03:44,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_8.c [2020-12-01 16:03:44,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/data/669cc7011/b7656d7db3644fb4a61bb1b86040713f/FLAGa240b26cb [2020-12-01 16:03:44,883 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:03:44,890 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/sv-benchmarks/c/locks/test_locks_8.c [2020-12-01 16:03:44,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/data/669cc7011/b7656d7db3644fb4a61bb1b86040713f/FLAGa240b26cb [2020-12-01 16:03:45,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/data/669cc7011/b7656d7db3644fb4a61bb1b86040713f [2020-12-01 16:03:45,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:03:45,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:03:45,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:45,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:03:45,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:03:45,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ab8791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45, skipping insertion in model container [2020-12-01 16:03:45,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:03:45,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:03:45,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:45,544 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:03:45,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:45,594 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:03:45,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45 WrapperNode [2020-12-01 16:03:45,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:45,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:45,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:03:45,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:03:45,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:45,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:03:45,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:03:45,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:03:45,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... [2020-12-01 16:03:45,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:03:45,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:03:45,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:03:45,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:03:45,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/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 [2020-12-01 16:03:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:03:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:03:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:03:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:03:46,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:03:46,403 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-01 16:03:46,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:46 BoogieIcfgContainer [2020-12-01 16:03:46,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:03:46,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:03:46,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:03:46,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:03:46,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:03:45" (1/3) ... [2020-12-01 16:03:46,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9fa5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:46, skipping insertion in model container [2020-12-01 16:03:46,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:45" (2/3) ... [2020-12-01 16:03:46,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9fa5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:46, skipping insertion in model container [2020-12-01 16:03:46,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:46" (3/3) ... [2020-12-01 16:03:46,417 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-12-01 16:03:46,434 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:03:46,439 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 16:03:46,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 16:03:46,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:03:46,483 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:03:46,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:03:46,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:03:46,484 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:03:46,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:03:46,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:03:46,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:03:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-01 16:03:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:03:46,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:46,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:46,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2020-12-01 16:03:46,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564922433] [2020-12-01 16:03:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:46,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564922433] [2020-12-01 16:03:46,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:46,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:46,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530980066] [2020-12-01 16:03:46,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:46,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:46,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:46,905 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-12-01 16:03:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,005 INFO L93 Difference]: Finished difference Result 72 states and 122 transitions. [2020-12-01 16:03:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-01 16:03:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,021 INFO L225 Difference]: With dead ends: 72 [2020-12-01 16:03:47,022 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 16:03:47,025 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 [2020-12-01 16:03:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 16:03:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-12-01 16:03:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 16:03:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2020-12-01 16:03:47,073 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2020-12-01 16:03:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,073 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2020-12-01 16:03:47,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2020-12-01 16:03:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:03:47,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:03:47,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2020-12-01 16:03:47,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390832983] [2020-12-01 16:03:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390832983] [2020-12-01 16:03:47,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938191762] [2020-12-01 16:03:47,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,146 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2020-12-01 16:03:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,174 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-12-01 16:03:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-01 16:03:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,176 INFO L225 Difference]: With dead ends: 94 [2020-12-01 16:03:47,176 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 16:03:47,178 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 [2020-12-01 16:03:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 16:03:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-01 16:03:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-01 16:03:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-12-01 16:03:47,188 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2020-12-01 16:03:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,188 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-12-01 16:03:47,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-12-01 16:03:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:03:47,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 16:03:47,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2020-12-01 16:03:47,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138055244] [2020-12-01 16:03:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138055244] [2020-12-01 16:03:47,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325055866] [2020-12-01 16:03:47,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,249 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2020-12-01 16:03:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,290 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-12-01 16:03:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-01 16:03:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,292 INFO L225 Difference]: With dead ends: 87 [2020-12-01 16:03:47,292 INFO L226 Difference]: Without dead ends: 60 [2020-12-01 16:03:47,293 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 [2020-12-01 16:03:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-01 16:03:47,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-01 16:03:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-01 16:03:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2020-12-01 16:03:47,304 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2020-12-01 16:03:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,304 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2020-12-01 16:03:47,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2020-12-01 16:03:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:03:47,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 16:03:47,306 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2020-12-01 16:03:47,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573779802] [2020-12-01 16:03:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573779802] [2020-12-01 16:03:47,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737552801] [2020-12-01 16:03:47,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,395 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2020-12-01 16:03:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,440 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2020-12-01 16:03:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-01 16:03:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,443 INFO L225 Difference]: With dead ends: 109 [2020-12-01 16:03:47,443 INFO L226 Difference]: Without dead ends: 107 [2020-12-01 16:03:47,444 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 [2020-12-01 16:03:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-01 16:03:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-12-01 16:03:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-01 16:03:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-12-01 16:03:47,466 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-12-01 16:03:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,466 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-12-01 16:03:47,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-12-01 16:03:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:03:47,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 16:03:47,469 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2020-12-01 16:03:47,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513763622] [2020-12-01 16:03:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513763622] [2020-12-01 16:03:47,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808179894] [2020-12-01 16:03:47,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,576 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2020-12-01 16:03:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,607 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2020-12-01 16:03:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-01 16:03:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,620 INFO L225 Difference]: With dead ends: 181 [2020-12-01 16:03:47,623 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 16:03:47,624 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 [2020-12-01 16:03:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 16:03:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-12-01 16:03:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-01 16:03:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2020-12-01 16:03:47,640 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2020-12-01 16:03:47,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,641 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2020-12-01 16:03:47,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,641 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2020-12-01 16:03:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:03:47,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 16:03:47,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2020-12-01 16:03:47,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894670731] [2020-12-01 16:03:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894670731] [2020-12-01 16:03:47,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232084297] [2020-12-01 16:03:47,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,689 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2020-12-01 16:03:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,709 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2020-12-01 16:03:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-01 16:03:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,711 INFO L225 Difference]: With dead ends: 162 [2020-12-01 16:03:47,712 INFO L226 Difference]: Without dead ends: 111 [2020-12-01 16:03:47,713 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 [2020-12-01 16:03:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-01 16:03:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-12-01 16:03:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-01 16:03:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2020-12-01 16:03:47,728 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2020-12-01 16:03:47,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,728 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2020-12-01 16:03:47,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2020-12-01 16:03:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:03:47,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 16:03:47,736 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2020-12-01 16:03:47,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890691889] [2020-12-01 16:03:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890691889] [2020-12-01 16:03:47,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746962805] [2020-12-01 16:03:47,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,788 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2020-12-01 16:03:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:47,825 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2020-12-01 16:03:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:47,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-01 16:03:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:47,843 INFO L225 Difference]: With dead ends: 309 [2020-12-01 16:03:47,843 INFO L226 Difference]: Without dead ends: 207 [2020-12-01 16:03:47,845 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 [2020-12-01 16:03:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-01 16:03:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-12-01 16:03:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-01 16:03:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2020-12-01 16:03:47,893 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2020-12-01 16:03:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:47,893 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2020-12-01 16:03:47,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2020-12-01 16:03:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:03:47,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:47,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:47,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 16:03:47,899 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:47,900 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2020-12-01 16:03:47,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:47,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744008858] [2020-12-01 16:03:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:47,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744008858] [2020-12-01 16:03:47,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:47,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:47,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278637463] [2020-12-01 16:03:47,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:47,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:47,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:47,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:47,981 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2020-12-01 16:03:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,018 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2020-12-01 16:03:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-01 16:03:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,022 INFO L225 Difference]: With dead ends: 257 [2020-12-01 16:03:48,022 INFO L226 Difference]: Without dead ends: 255 [2020-12-01 16:03:48,023 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 [2020-12-01 16:03:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-12-01 16:03:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-12-01 16:03:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-01 16:03:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2020-12-01 16:03:48,063 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2020-12-01 16:03:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,063 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2020-12-01 16:03:48,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2020-12-01 16:03:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 16:03:48,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:48,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 16:03:48,070 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2020-12-01 16:03:48,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327405527] [2020-12-01 16:03:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327405527] [2020-12-01 16:03:48,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846241211] [2020-12-01 16:03:48,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,150 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2020-12-01 16:03:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,198 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2020-12-01 16:03:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-01 16:03:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,203 INFO L225 Difference]: With dead ends: 373 [2020-12-01 16:03:48,203 INFO L226 Difference]: Without dead ends: 371 [2020-12-01 16:03:48,204 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 [2020-12-01 16:03:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-12-01 16:03:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2020-12-01 16:03:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-01 16:03:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2020-12-01 16:03:48,229 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2020-12-01 16:03:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,229 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2020-12-01 16:03:48,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2020-12-01 16:03:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 16:03:48,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:48,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 16:03:48,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,233 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2020-12-01 16:03:48,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493668603] [2020-12-01 16:03:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493668603] [2020-12-01 16:03:48,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523780842] [2020-12-01 16:03:48,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,312 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2020-12-01 16:03:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,355 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2020-12-01 16:03:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-01 16:03:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,362 INFO L225 Difference]: With dead ends: 677 [2020-12-01 16:03:48,362 INFO L226 Difference]: Without dead ends: 395 [2020-12-01 16:03:48,367 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 [2020-12-01 16:03:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-01 16:03:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-12-01 16:03:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-12-01 16:03:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2020-12-01 16:03:48,391 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2020-12-01 16:03:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,391 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2020-12-01 16:03:48,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2020-12-01 16:03:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:03:48,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:48,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 16:03:48,393 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2020-12-01 16:03:48,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677805673] [2020-12-01 16:03:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677805673] [2020-12-01 16:03:48,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564543430] [2020-12-01 16:03:48,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,442 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2020-12-01 16:03:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,487 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2020-12-01 16:03:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-01 16:03:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,494 INFO L225 Difference]: With dead ends: 597 [2020-12-01 16:03:48,495 INFO L226 Difference]: Without dead ends: 407 [2020-12-01 16:03:48,495 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 [2020-12-01 16:03:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-12-01 16:03:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-12-01 16:03:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-12-01 16:03:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2020-12-01 16:03:48,512 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2020-12-01 16:03:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,513 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2020-12-01 16:03:48,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2020-12-01 16:03:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:03:48,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:48,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 16:03:48,515 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2020-12-01 16:03:48,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742128083] [2020-12-01 16:03:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742128083] [2020-12-01 16:03:48,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76092126] [2020-12-01 16:03:48,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,549 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2020-12-01 16:03:48,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,610 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2020-12-01 16:03:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-01 16:03:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,617 INFO L225 Difference]: With dead ends: 713 [2020-12-01 16:03:48,617 INFO L226 Difference]: Without dead ends: 711 [2020-12-01 16:03:48,619 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 [2020-12-01 16:03:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-01 16:03:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2020-12-01 16:03:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-12-01 16:03:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2020-12-01 16:03:48,662 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2020-12-01 16:03:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,663 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2020-12-01 16:03:48,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2020-12-01 16:03:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:03:48,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:48,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 16:03:48,665 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2020-12-01 16:03:48,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448092636] [2020-12-01 16:03:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448092636] [2020-12-01 16:03:48,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001982883] [2020-12-01 16:03:48,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,697 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2020-12-01 16:03:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,734 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2020-12-01 16:03:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-01 16:03:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,741 INFO L225 Difference]: With dead ends: 1337 [2020-12-01 16:03:48,742 INFO L226 Difference]: Without dead ends: 775 [2020-12-01 16:03:48,743 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 [2020-12-01 16:03:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-12-01 16:03:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2020-12-01 16:03:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-12-01 16:03:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2020-12-01 16:03:48,780 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2020-12-01 16:03:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,780 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2020-12-01 16:03:48,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2020-12-01 16:03:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:03:48,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,783 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] [2020-12-01 16:03:48,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 16:03:48,783 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2020-12-01 16:03:48,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225453592] [2020-12-01 16:03:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225453592] [2020-12-01 16:03:48,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442066739] [2020-12-01 16:03:48,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,815 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2020-12-01 16:03:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,846 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2020-12-01 16:03:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-01 16:03:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,853 INFO L225 Difference]: With dead ends: 1161 [2020-12-01 16:03:48,853 INFO L226 Difference]: Without dead ends: 791 [2020-12-01 16:03:48,854 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 [2020-12-01 16:03:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-12-01 16:03:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-12-01 16:03:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-12-01 16:03:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2020-12-01 16:03:48,886 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2020-12-01 16:03:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:48,887 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2020-12-01 16:03:48,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2020-12-01 16:03:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:03:48,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:48,889 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] [2020-12-01 16:03:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 16:03:48,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2020-12-01 16:03:48,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:48,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830656439] [2020-12-01 16:03:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:48,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830656439] [2020-12-01 16:03:48,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:48,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:48,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812317719] [2020-12-01 16:03:48,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:48,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:48,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:48,920 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2020-12-01 16:03:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:48,958 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2020-12-01 16:03:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:48,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-01 16:03:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:48,968 INFO L225 Difference]: With dead ends: 1353 [2020-12-01 16:03:48,968 INFO L226 Difference]: Without dead ends: 1351 [2020-12-01 16:03:48,969 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 [2020-12-01 16:03:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-12-01 16:03:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2020-12-01 16:03:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-12-01 16:03:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2020-12-01 16:03:49,017 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2020-12-01 16:03:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:49,018 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2020-12-01 16:03:49,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2020-12-01 16:03:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:03:49,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:49,021 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] [2020-12-01 16:03:49,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 16:03:49,021 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:49,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2020-12-01 16:03:49,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:49,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309900945] [2020-12-01 16:03:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:49,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309900945] [2020-12-01 16:03:49,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:49,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:49,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595228142] [2020-12-01 16:03:49,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:49,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:49,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:49,050 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2020-12-01 16:03:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:49,101 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2020-12-01 16:03:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:49,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-01 16:03:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:49,112 INFO L225 Difference]: With dead ends: 2633 [2020-12-01 16:03:49,112 INFO L226 Difference]: Without dead ends: 1511 [2020-12-01 16:03:49,114 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 [2020-12-01 16:03:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-12-01 16:03:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-12-01 16:03:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-12-01 16:03:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2020-12-01 16:03:49,187 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2020-12-01 16:03:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:49,187 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2020-12-01 16:03:49,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2020-12-01 16:03:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 16:03:49,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:49,190 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] [2020-12-01 16:03:49,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 16:03:49,191 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:49,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:49,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2020-12-01 16:03:49,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:49,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127099578] [2020-12-01 16:03:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:49,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127099578] [2020-12-01 16:03:49,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:49,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:49,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099142012] [2020-12-01 16:03:49,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:49,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:49,218 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2020-12-01 16:03:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:49,265 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2020-12-01 16:03:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:49,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-01 16:03:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:49,276 INFO L225 Difference]: With dead ends: 2265 [2020-12-01 16:03:49,276 INFO L226 Difference]: Without dead ends: 1543 [2020-12-01 16:03:49,278 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 [2020-12-01 16:03:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-12-01 16:03:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-12-01 16:03:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-12-01 16:03:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2020-12-01 16:03:49,340 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2020-12-01 16:03:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:49,341 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2020-12-01 16:03:49,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2020-12-01 16:03:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 16:03:49,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:49,344 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] [2020-12-01 16:03:49,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 16:03:49,345 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:49,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2020-12-01 16:03:49,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:49,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666553719] [2020-12-01 16:03:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:49,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666553719] [2020-12-01 16:03:49,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:49,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:49,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430828556] [2020-12-01 16:03:49,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:49,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:49,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:49,373 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2020-12-01 16:03:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:49,452 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2020-12-01 16:03:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:49,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-01 16:03:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:49,468 INFO L225 Difference]: With dead ends: 2569 [2020-12-01 16:03:49,468 INFO L226 Difference]: Without dead ends: 2567 [2020-12-01 16:03:49,470 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 [2020-12-01 16:03:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-12-01 16:03:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2020-12-01 16:03:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-12-01 16:03:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2020-12-01 16:03:49,559 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2020-12-01 16:03:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:49,559 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2020-12-01 16:03:49,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2020-12-01 16:03:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 16:03:49,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:49,564 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] [2020-12-01 16:03:49,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 16:03:49,565 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:49,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2020-12-01 16:03:49,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:49,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924673218] [2020-12-01 16:03:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:49,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924673218] [2020-12-01 16:03:49,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:49,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:49,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609620448] [2020-12-01 16:03:49,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:49,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:49,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:49,592 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2020-12-01 16:03:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:49,689 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2020-12-01 16:03:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:49,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-01 16:03:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:49,708 INFO L225 Difference]: With dead ends: 5193 [2020-12-01 16:03:49,708 INFO L226 Difference]: Without dead ends: 2951 [2020-12-01 16:03:49,712 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 [2020-12-01 16:03:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-12-01 16:03:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2020-12-01 16:03:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-12-01 16:03:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2020-12-01 16:03:49,833 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2020-12-01 16:03:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:49,833 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2020-12-01 16:03:49,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2020-12-01 16:03:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:03:49,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:49,838 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] [2020-12-01 16:03:49,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 16:03:49,839 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:49,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2020-12-01 16:03:49,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080704053] [2020-12-01 16:03:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:49,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080704053] [2020-12-01 16:03:49,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:49,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:49,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785038070] [2020-12-01 16:03:49,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:49,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:49,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:49,873 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2020-12-01 16:03:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:49,952 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2020-12-01 16:03:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:49,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-01 16:03:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:49,971 INFO L225 Difference]: With dead ends: 4425 [2020-12-01 16:03:49,971 INFO L226 Difference]: Without dead ends: 3015 [2020-12-01 16:03:49,974 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 [2020-12-01 16:03:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-12-01 16:03:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2020-12-01 16:03:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-12-01 16:03:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2020-12-01 16:03:50,153 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2020-12-01 16:03:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:50,153 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2020-12-01 16:03:50,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2020-12-01 16:03:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:03:50,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:50,159 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] [2020-12-01 16:03:50,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-01 16:03:50,161 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2020-12-01 16:03:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:50,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019500391] [2020-12-01 16:03:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:50,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019500391] [2020-12-01 16:03:50,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:50,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:50,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984189714] [2020-12-01 16:03:50,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:50,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:50,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:50,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:50,221 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2020-12-01 16:03:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:50,341 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2020-12-01 16:03:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:50,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-01 16:03:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:50,372 INFO L225 Difference]: With dead ends: 4871 [2020-12-01 16:03:50,372 INFO L226 Difference]: Without dead ends: 4869 [2020-12-01 16:03:50,374 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 [2020-12-01 16:03:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-12-01 16:03:50,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2020-12-01 16:03:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-12-01 16:03:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2020-12-01 16:03:50,594 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2020-12-01 16:03:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:50,595 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2020-12-01 16:03:50,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2020-12-01 16:03:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:03:50,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:50,605 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] [2020-12-01 16:03:50,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-01 16:03:50,606 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:50,607 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2020-12-01 16:03:50,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:50,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328106570] [2020-12-01 16:03:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:03:50,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328106570] [2020-12-01 16:03:50,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:50,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:03:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823565800] [2020-12-01 16:03:50,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:03:50,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:50,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:03:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:03:50,654 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2020-12-01 16:03:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:50,826 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2020-12-01 16:03:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:03:50,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-01 16:03:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:50,828 INFO L225 Difference]: With dead ends: 10245 [2020-12-01 16:03:50,828 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 16:03:50,840 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 [2020-12-01 16:03:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 16:03:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 16:03:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 16:03:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 16:03:50,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-01 16:03:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:50,842 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 16:03:50,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:03:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 16:03:50,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 16:03:50,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-01 16:03:50,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 16:03:50,864 INFO L262 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-12-01 16:03:50,864 INFO L262 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-12-01 16:03:50,865 INFO L262 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,865 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 16:03:50,865 INFO L265 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-12-01 16:03:50,865 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 16:03:50,865 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 16:03:50,865 INFO L262 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,866 INFO L262 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,866 INFO L265 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-12-01 16:03:50,866 INFO L262 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-12-01 16:03:50,866 INFO L262 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-12-01 16:03:50,866 INFO L262 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,866 INFO L262 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-12-01 16:03:50,868 INFO L258 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-12-01 16:03:50,868 INFO L262 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,868 INFO L262 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,868 INFO L262 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-12-01 16:03:50,868 INFO L262 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,868 INFO L262 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,869 INFO L262 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L262 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-12-01 16:03:50,870 INFO L265 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-12-01 16:03:50,871 INFO L262 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,871 INFO L262 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-12-01 16:03:50,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:03:50 BoogieIcfgContainer [2020-12-01 16:03:50,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:03:50,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:03:50,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:03:50,893 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:03:50,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:46" (3/4) ... [2020-12-01 16:03:50,898 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 16:03:50,914 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-01 16:03:50,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 16:03:50,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:03:50,915 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:03:50,983 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1b5f1021-b449-48e2-8e3c-c7d0b8517d1f/bin/uautomizer/witness.graphml [2020-12-01 16:03:50,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:03:50,986 INFO L168 Benchmark]: Toolchain (without parser) took 5756.23 ms. Allocated memory was 127.9 MB in the beginning and 190.8 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 99.1 MB in the end (delta: 810.1 kB). Peak memory consumption was 64.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,986 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:03:50,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.37 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 105.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,988 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 127.9 MB. Free memory was 103.4 MB in the beginning and 102.5 MB in the end (delta: 898.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:03:50,988 INFO L168 Benchmark]: RCFGBuilder took 731.59 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 85.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,989 INFO L168 Benchmark]: TraceAbstraction took 4483.89 ms. Allocated memory was 127.9 MB in the beginning and 190.8 MB in the end (delta: 62.9 MB). Free memory was 84.5 MB in the beginning and 102.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,990 INFO L168 Benchmark]: Witness Printer took 91.23 ms. Allocated memory is still 190.8 MB. Free memory was 102.2 MB in the beginning and 99.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:50,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.37 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 105.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 103.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 127.9 MB. Free memory was 103.4 MB in the beginning and 102.5 MB in the end (delta: 898.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 731.59 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 85.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4483.89 ms. Allocated memory was 127.9 MB in the beginning and 190.8 MB in the end (delta: 62.9 MB). Free memory was 84.5 MB in the beginning and 102.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Witness Printer took 91.23 ms. Allocated memory is still 190.8 MB. Free memory was 102.2 MB in the beginning and 99.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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...