./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.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_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/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 9b48c2070a9c96d01041d519ab41669c7f8d3d48 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:06:37,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:06:37,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:06:37,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:06:37,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:06:37,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:06:37,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:06:37,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:06:37,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:06:37,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:06:37,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:06:37,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:06:37,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:06:37,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:06:37,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:06:37,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:06:37,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:06:37,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:06:37,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:06:37,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:06:37,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:06:37,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:06:37,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:06:37,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:06:37,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:06:37,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:06:37,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:06:37,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:06:37,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:06:37,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:06:37,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:06:37,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:06:37,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:06:37,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:06:37,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:06:37,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:06:37,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:06:37,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:06:37,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:06:37,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:06:37,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:06:37,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:06:37,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:06:37,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:06:37,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:06:37,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:06:37,244 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:06:37,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:06:37,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:06:37,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:06:37,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:06:37,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:06:37,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:06:37,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:06:37,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:06:37,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:06:37,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:06:37,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:06:37,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:06:37,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:06:37,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:06:37,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:06:37,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:06:37,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:06:37,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:06:37,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:06:37,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:06:37,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:06:37,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:06:37,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:06:37,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:06:37,250 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_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b48c2070a9c96d01041d519ab41669c7f8d3d48 [2020-12-01 15:06:37,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:06:37,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:06:37,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:06:37,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:06:37,584 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:06:37,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2020-12-01 15:06:37,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/data/a478ad59a/a102269f107e4ca5b1722f377d7a71af/FLAG81f271008 [2020-12-01 15:06:38,130 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:06:38,131 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2020-12-01 15:06:38,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/data/a478ad59a/a102269f107e4ca5b1722f377d7a71af/FLAG81f271008 [2020-12-01 15:06:38,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/data/a478ad59a/a102269f107e4ca5b1722f377d7a71af [2020-12-01 15:06:38,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:06:38,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:06:38,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:06:38,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:06:38,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:06:38,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc18667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38, skipping insertion in model container [2020-12-01 15:06:38,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:06:38,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:06:38,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:06:38,767 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:06:38,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:06:38,823 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:06:38,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38 WrapperNode [2020-12-01 15:06:38,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:06:38,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:06:38,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:06:38,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:06:38,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:06:38,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:06:38,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:06:38,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:06:38,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... [2020-12-01 15:06:38,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:06:38,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:06:38,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:06:38,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:06:38,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/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 15:06:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:06:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:06:39,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:06:39,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:06:39,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:06:39,365 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-12-01 15:06:39,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:39 BoogieIcfgContainer [2020-12-01 15:06:39,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:06:39,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:06:39,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:06:39,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:06:39,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:06:38" (1/3) ... [2020-12-01 15:06:39,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517887c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:06:39, skipping insertion in model container [2020-12-01 15:06:39,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:38" (2/3) ... [2020-12-01 15:06:39,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517887c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:06:39, skipping insertion in model container [2020-12-01 15:06:39,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:39" (3/3) ... [2020-12-01 15:06:39,392 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2020-12-01 15:06:39,410 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:06:39,413 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:06:39,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:06:39,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:06:39,492 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:06:39,492 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:06:39,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:06:39,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:06:39,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:06:39,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:06:39,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:06:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-01 15:06:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:06:39,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:39,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:39,525 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-01 15:06:39,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:39,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076222204] [2020-12-01 15:06:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:39,743 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 15:06:39,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076222204] [2020-12-01 15:06:39,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:39,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:06:39,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145560001] [2020-12-01 15:06:39,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:06:39,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:39,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:06:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:06:39,771 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-01 15:06:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:39,797 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-12-01 15:06:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:06:39,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:06:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:39,817 INFO L225 Difference]: With dead ends: 75 [2020-12-01 15:06:39,818 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 15:06:39,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:06:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 15:06:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 15:06:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:06:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-01 15:06:39,879 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-01 15:06:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:39,879 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-01 15:06:39,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:06:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-01 15:06:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:06:39,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:39,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:39,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:06:39,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-01 15:06:39,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:39,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565669959] [2020-12-01 15:06:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:40,021 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 15:06:40,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565669959] [2020-12-01 15:06:40,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:40,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:06:40,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711026555] [2020-12-01 15:06:40,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:06:40,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:06:40,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:06:40,036 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-01 15:06:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:40,154 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-01 15:06:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:06:40,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:06:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:40,158 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:06:40,159 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 15:06:40,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:06:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 15:06:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-01 15:06:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:06:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-01 15:06:40,171 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-12-01 15:06:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:40,171 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-01 15:06:40,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:06:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-01 15:06:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:06:40,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:40,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:40,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:06:40,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:40,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-12-01 15:06:40,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:40,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438696290] [2020-12-01 15:06:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:40,287 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 15:06:40,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438696290] [2020-12-01 15:06:40,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:40,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:06:40,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279431079] [2020-12-01 15:06:40,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:06:40,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:40,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:06:40,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:06:40,293 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-12-01 15:06:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:40,389 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-12-01 15:06:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:06:40,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:06:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:40,391 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:06:40,391 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:06:40,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:06:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:06:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-12-01 15:06:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:06:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-01 15:06:40,417 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-01 15:06:40,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:40,418 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-01 15:06:40,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:06:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-01 15:06:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:06:40,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:40,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:40,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:06:40,420 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:40,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:40,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-12-01 15:06:40,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:40,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526868699] [2020-12-01 15:06:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:40,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:40,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832215179] [2020-12-01 15:06:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:40,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:06:40,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:40,599 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 15:06:40,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526868699] [2020-12-01 15:06:40,618 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:40,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832215179] [2020-12-01 15:06:40,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:40,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:06:40,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820779264] [2020-12-01 15:06:40,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:06:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:06:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:06:40,621 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-12-01 15:06:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:40,717 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-12-01 15:06:40,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:06:40,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-01 15:06:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:40,719 INFO L225 Difference]: With dead ends: 72 [2020-12-01 15:06:40,719 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:06:40,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:06:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:06:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-01 15:06:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:06:40,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-01 15:06:40,727 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-12-01 15:06:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:40,728 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-01 15:06:40,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:06:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-01 15:06:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:06:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:40,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:40,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:40,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash -13373041, now seen corresponding path program 1 times [2020-12-01 15:06:40,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:40,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428663306] [2020-12-01 15:06:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:40,967 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:40,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557666243] [2020-12-01 15:06:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:41,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:06:41,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:41,129 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 15:06:41,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428663306] [2020-12-01 15:06:41,130 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:41,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557666243] [2020-12-01 15:06:41,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:41,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:06:41,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130974169] [2020-12-01 15:06:41,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:06:41,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:41,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:06:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:06:41,134 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2020-12-01 15:06:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:41,204 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-12-01 15:06:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:06:41,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:06:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:41,206 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:06:41,206 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 15:06:41,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:06:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 15:06:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-12-01 15:06:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-01 15:06:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-01 15:06:41,213 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-01 15:06:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:41,213 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-01 15:06:41,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:06:41,213 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-01 15:06:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:06:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:41,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:41,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:41,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:41,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-12-01 15:06:41,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:41,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247765258] [2020-12-01 15:06:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:41,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:41,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914742722] [2020-12-01 15:06:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:41,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:06:41,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:41,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247765258] [2020-12-01 15:06:41,599 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:41,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914742722] [2020-12-01 15:06:41,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:41,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:06:41,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178904938] [2020-12-01 15:06:41,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:06:41,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:06:41,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:06:41,602 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-01 15:06:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:41,799 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-12-01 15:06:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:06:41,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 15:06:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:41,806 INFO L225 Difference]: With dead ends: 98 [2020-12-01 15:06:41,807 INFO L226 Difference]: Without dead ends: 61 [2020-12-01 15:06:41,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:06:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-01 15:06:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-12-01 15:06:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-01 15:06:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-12-01 15:06:41,822 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2020-12-01 15:06:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:41,822 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-12-01 15:06:41,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:06:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-12-01 15:06:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:06:41,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:41,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:42,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:42,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:42,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-12-01 15:06:42,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:42,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231083604] [2020-12-01 15:06:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:42,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:42,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033122863] [2020-12-01 15:06:42,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:42,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:06:42,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:42,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:06:42,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:42,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231083604] [2020-12-01 15:06:42,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:42,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033122863] [2020-12-01 15:06:42,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:42,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:06:42,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078167541] [2020-12-01 15:06:42,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:06:42,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:06:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:06:42,238 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2020-12-01 15:06:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:42,419 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-01 15:06:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:06:42,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-01 15:06:42,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:42,424 INFO L225 Difference]: With dead ends: 103 [2020-12-01 15:06:42,425 INFO L226 Difference]: Without dead ends: 89 [2020-12-01 15:06:42,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:06:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-01 15:06:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-12-01 15:06:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 15:06:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-01 15:06:42,453 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2020-12-01 15:06:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:42,454 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-01 15:06:42,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:06:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-01 15:06:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:06:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:42,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:42,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:42,668 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1085203663, now seen corresponding path program 1 times [2020-12-01 15:06:42,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:42,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248199316] [2020-12-01 15:06:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:42,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:42,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755126013] [2020-12-01 15:06:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:42,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-01 15:06:42,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:42,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248199316] [2020-12-01 15:06:42,943 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:42,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755126013] [2020-12-01 15:06:42,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:42,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:06:42,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159065814] [2020-12-01 15:06:42,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:06:42,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:42,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:06:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:06:42,946 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-12-01 15:06:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:43,127 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-12-01 15:06:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:06:43,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-01 15:06:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:43,128 INFO L225 Difference]: With dead ends: 101 [2020-12-01 15:06:43,128 INFO L226 Difference]: Without dead ends: 99 [2020-12-01 15:06:43,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:06:43,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-01 15:06:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2020-12-01 15:06:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-01 15:06:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-12-01 15:06:43,138 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2020-12-01 15:06:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:43,138 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-12-01 15:06:43,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:06:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-12-01 15:06:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:06:43,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:43,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:43,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:43,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash -796144622, now seen corresponding path program 1 times [2020-12-01 15:06:43,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:43,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046756869] [2020-12-01 15:06:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:43,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:43,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524055346] [2020-12-01 15:06:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:43,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 15:06:43,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:43,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046756869] [2020-12-01 15:06:43,577 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:43,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524055346] [2020-12-01 15:06:43,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:43,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:06:43,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335221378] [2020-12-01 15:06:43,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:06:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:06:43,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:06:43,580 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-12-01 15:06:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:43,742 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-01 15:06:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:06:43,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-01 15:06:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:43,744 INFO L225 Difference]: With dead ends: 117 [2020-12-01 15:06:43,744 INFO L226 Difference]: Without dead ends: 91 [2020-12-01 15:06:43,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:06:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-01 15:06:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-12-01 15:06:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:06:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-01 15:06:43,761 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2020-12-01 15:06:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:43,763 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-01 15:06:43,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:06:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-01 15:06:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:06:43,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:43,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:43,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:43,986 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1129109896, now seen corresponding path program 1 times [2020-12-01 15:06:43,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:43,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091245385] [2020-12-01 15:06:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:44,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:44,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986174372] [2020-12-01 15:06:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 15:06:44,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:44,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091245385] [2020-12-01 15:06:44,222 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:44,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986174372] [2020-12-01 15:06:44,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:44,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:06:44,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994710564] [2020-12-01 15:06:44,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:06:44,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:44,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:06:44,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:06:44,224 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2020-12-01 15:06:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:44,388 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-12-01 15:06:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:06:44,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-01 15:06:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:44,390 INFO L225 Difference]: With dead ends: 91 [2020-12-01 15:06:44,390 INFO L226 Difference]: Without dead ends: 76 [2020-12-01 15:06:44,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:06:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-01 15:06:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-01 15:06:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-01 15:06:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-12-01 15:06:44,400 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2020-12-01 15:06:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:44,401 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-12-01 15:06:44,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:06:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-12-01 15:06:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:06:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:44,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:44,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:06:44,618 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 3 times [2020-12-01 15:06:44,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:44,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390196147] [2020-12-01 15:06:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:44,626 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:44,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933062441] [2020-12-01 15:06:44,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:44,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:06:44,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:44,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 15:06:44,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:06:44,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390196147] [2020-12-01 15:06:44,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:44,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933062441] [2020-12-01 15:06:44,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:44,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:06:44,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583773765] [2020-12-01 15:06:44,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:06:44,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:44,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:06:44,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:06:44,933 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2020-12-01 15:06:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:45,183 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-01 15:06:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:06:45,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-01 15:06:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:45,185 INFO L225 Difference]: With dead ends: 94 [2020-12-01 15:06:45,185 INFO L226 Difference]: Without dead ends: 84 [2020-12-01 15:06:45,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:06:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-01 15:06:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-12-01 15:06:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:06:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-12-01 15:06:45,199 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2020-12-01 15:06:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:45,201 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-12-01 15:06:45,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:06:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-12-01 15:06:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 15:06:45,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:45,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:45,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-01 15:06:45,424 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1042348646, now seen corresponding path program 2 times [2020-12-01 15:06:45,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:45,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992755986] [2020-12-01 15:06:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:45,433 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:45,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700183915] [2020-12-01 15:06:45,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:45,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:06:45,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 15:06:45,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:45,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992755986] [2020-12-01 15:06:45,665 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:45,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700183915] [2020-12-01 15:06:45,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:45,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:06:45,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511259560] [2020-12-01 15:06:45,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:06:45,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:06:45,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:06:45,667 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2020-12-01 15:06:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:45,985 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-12-01 15:06:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:06:45,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-01 15:06:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:45,988 INFO L225 Difference]: With dead ends: 133 [2020-12-01 15:06:45,988 INFO L226 Difference]: Without dead ends: 98 [2020-12-01 15:06:45,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:06:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-01 15:06:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-12-01 15:06:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-01 15:06:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-12-01 15:06:46,002 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 34 [2020-12-01 15:06:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:46,002 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-12-01 15:06:46,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:06:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-12-01 15:06:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 15:06:46,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:46,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:46,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:46,225 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1894983429, now seen corresponding path program 3 times [2020-12-01 15:06:46,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:46,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27574349] [2020-12-01 15:06:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:46,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:46,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579729286] [2020-12-01 15:06:46,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:46,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:06:46,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:46,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-01 15:06:46,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:46,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27574349] [2020-12-01 15:06:46,591 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:46,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579729286] [2020-12-01 15:06:46,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:46,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-01 15:06:46,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584901851] [2020-12-01 15:06:46,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:06:46,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:46,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:06:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:06:46,592 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 12 states. [2020-12-01 15:06:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:47,212 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2020-12-01 15:06:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:06:47,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-12-01 15:06:47,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:47,215 INFO L225 Difference]: With dead ends: 133 [2020-12-01 15:06:47,215 INFO L226 Difference]: Without dead ends: 100 [2020-12-01 15:06:47,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:06:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-01 15:06:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2020-12-01 15:06:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-01 15:06:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2020-12-01 15:06:47,229 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 40 [2020-12-01 15:06:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:47,229 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2020-12-01 15:06:47,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:06:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2020-12-01 15:06:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-01 15:06:47,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:47,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:47,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:47,444 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1501956419, now seen corresponding path program 1 times [2020-12-01 15:06:47,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:47,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204488669] [2020-12-01 15:06:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:47,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:47,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300894050] [2020-12-01 15:06:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:06:47,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:06:47,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:06:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204488669] [2020-12-01 15:06:47,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300894050] [2020-12-01 15:06:47,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:06:47,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:06:47,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153870770] [2020-12-01 15:06:47,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:06:47,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:47,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:06:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:06:47,680 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 6 states. [2020-12-01 15:06:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:47,810 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2020-12-01 15:06:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:06:47,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-01 15:06:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:47,813 INFO L225 Difference]: With dead ends: 146 [2020-12-01 15:06:47,813 INFO L226 Difference]: Without dead ends: 114 [2020-12-01 15:06:47,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:06:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-01 15:06:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2020-12-01 15:06:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:06:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-12-01 15:06:47,833 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 40 [2020-12-01 15:06:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:47,835 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-12-01 15:06:47,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:06:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-12-01 15:06:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-01 15:06:47,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:47,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:48,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-01 15:06:48,050 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:48,051 INFO L82 PathProgramCache]: Analyzing trace with hash 265910895, now seen corresponding path program 4 times [2020-12-01 15:06:48,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:48,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573042224] [2020-12-01 15:06:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:48,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:48,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363438726] [2020-12-01 15:06:48,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:48,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:06:48,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:48,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-01 15:06:48,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:48,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573042224] [2020-12-01 15:06:48,309 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363438726] [2020-12-01 15:06:48,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:48,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:06:48,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919900970] [2020-12-01 15:06:48,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:06:48,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:06:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:06:48,311 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2020-12-01 15:06:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:48,670 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-12-01 15:06:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:06:48,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-12-01 15:06:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:48,671 INFO L225 Difference]: With dead ends: 107 [2020-12-01 15:06:48,671 INFO L226 Difference]: Without dead ends: 105 [2020-12-01 15:06:48,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:06:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-01 15:06:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2020-12-01 15:06:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-01 15:06:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-12-01 15:06:48,683 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 41 [2020-12-01 15:06:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:48,683 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-12-01 15:06:48,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:06:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-12-01 15:06:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-01 15:06:48,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:48,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:48,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-01 15:06:48,898 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash 13129928, now seen corresponding path program 2 times [2020-12-01 15:06:48,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:48,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371873279] [2020-12-01 15:06:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:48,906 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:48,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470336926] [2020-12-01 15:06:48,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:48,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:06:48,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:48,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-01 15:06:48,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:06:49,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371873279] [2020-12-01 15:06:49,361 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:49,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470336926] [2020-12-01 15:06:49,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:49,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-01 15:06:49,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689077342] [2020-12-01 15:06:49,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:06:49,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:49,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:06:49,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:06:49,362 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 14 states. [2020-12-01 15:06:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:49,917 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2020-12-01 15:06:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:06:49,918 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-12-01 15:06:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:49,919 INFO L225 Difference]: With dead ends: 122 [2020-12-01 15:06:49,919 INFO L226 Difference]: Without dead ends: 96 [2020-12-01 15:06:49,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-12-01 15:06:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-01 15:06:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-12-01 15:06:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-01 15:06:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-12-01 15:06:49,930 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 42 [2020-12-01 15:06:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:49,931 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-12-01 15:06:49,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:06:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-12-01 15:06:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-01 15:06:49,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:49,932 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:50,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-01 15:06:50,146 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:50,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2137487794, now seen corresponding path program 3 times [2020-12-01 15:06:50,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:50,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649606466] [2020-12-01 15:06:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:50,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:50,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679718271] [2020-12-01 15:06:50,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:50,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:06:50,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:50,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-01 15:06:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-01 15:06:50,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649606466] [2020-12-01 15:06:50,619 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:50,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679718271] [2020-12-01 15:06:50,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:50,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 15:06:50,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618128607] [2020-12-01 15:06:50,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:06:50,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:50,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:06:50,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:06:50,621 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 13 states. [2020-12-01 15:06:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:51,264 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-12-01 15:06:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:06:51,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-12-01 15:06:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:51,265 INFO L225 Difference]: With dead ends: 114 [2020-12-01 15:06:51,265 INFO L226 Difference]: Without dead ends: 110 [2020-12-01 15:06:51,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:06:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-01 15:06:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-12-01 15:06:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-01 15:06:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-12-01 15:06:51,281 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 43 [2020-12-01 15:06:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:51,281 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-12-01 15:06:51,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:06:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-12-01 15:06:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 15:06:51,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:06:51,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:06:51,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:51,498 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:06:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:06:51,499 INFO L82 PathProgramCache]: Analyzing trace with hash 317576706, now seen corresponding path program 2 times [2020-12-01 15:06:51,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:06:51,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872152181] [2020-12-01 15:06:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:06:51,512 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:06:51,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235106366] [2020-12-01 15:06:51,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:06:51,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:06:51,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:06:51,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:06:51,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:06:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-01 15:06:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872152181] [2020-12-01 15:06:51,766 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:06:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235106366] [2020-12-01 15:06:51,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:06:51,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:06:51,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17633749] [2020-12-01 15:06:51,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:06:51,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:06:51,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:06:51,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:06:51,777 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-12-01 15:06:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:06:52,126 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-01 15:06:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:06:52,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-12-01 15:06:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:06:52,126 INFO L225 Difference]: With dead ends: 94 [2020-12-01 15:06:52,126 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:06:52,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:06:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:06:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:06:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:06:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:06:52,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-12-01 15:06:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:06:52,128 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:06:52,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:06:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:06:52,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:06:52,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-01 15:06:52,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:06:52,850 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-12-01 15:06:53,021 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-12-01 15:06:53,234 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 18 [2020-12-01 15:06:55,513 WARN L197 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-12-01 15:06:55,771 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 18 [2020-12-01 15:06:55,985 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-12-01 15:06:56,149 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 12 [2020-12-01 15:06:56,153 INFO L265 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-12-01 15:06:56,153 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,153 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-01 15:06:56,153 INFO L262 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,154 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,155 INFO L258 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (let ((.cse5 (<= .cse3 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 (= (mod ULTIMATE.start_main_~d~0 (- 2)) 0) .cse2 (<= 1 (div .cse3 2)) .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 .cse5) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-01 15:06:56,155 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,155 INFO L258 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (let ((.cse5 (<= .cse3 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 (= (mod ULTIMATE.start_main_~d~0 (- 2)) 0) .cse2 (<= 1 (div .cse3 2)) .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 .cse5) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-01 15:06:56,155 INFO L262 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,155 INFO L258 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (let ((.cse5 (<= .cse3 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 (= (mod ULTIMATE.start_main_~d~0 (- 2)) 0) .cse2 (<= 1 (div .cse3 2)) .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 .cse5) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1))))) [2020-12-01 15:06:56,155 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,155 INFO L258 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L258 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (< 0 .cse0))) [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L265 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,156 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:06:56,157 INFO L258 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse5 (<= .cse3 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 (= (mod ULTIMATE.start_main_~d~0 (- 2)) 0) .cse2 (<= 1 (div .cse3 2)) .cse4 .cse5) (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 .cse5)))) [2020-12-01 15:06:56,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:06:56,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:06:56 BoogieIcfgContainer [2020-12-01 15:06:56,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:06:56,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:06:56,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:06:56,205 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:06:56,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:39" (3/4) ... [2020-12-01 15:06:56,209 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:06:56,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-01 15:06:56,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:06:56,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:06:56,228 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:06:56,286 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_19a3c4da-bcd8-4e1b-b3c1-c7ae94c8d7c2/bin/uautomizer/witness.graphml [2020-12-01 15:06:56,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:06:56,288 INFO L168 Benchmark]: Toolchain (without parser) took 17768.94 ms. Allocated memory was 104.9 MB in the beginning and 226.5 MB in the end (delta: 121.6 MB). Free memory was 78.0 MB in the beginning and 153.2 MB in the end (delta: -75.2 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,289 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:06:56,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 82.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.05 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,290 INFO L168 Benchmark]: Boogie Preprocessor took 57.32 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:06:56,290 INFO L168 Benchmark]: RCFGBuilder took 426.21 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 63.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,291 INFO L168 Benchmark]: TraceAbstraction took 16835.65 ms. Allocated memory was 104.9 MB in the beginning and 226.5 MB in the end (delta: 121.6 MB). Free memory was 62.9 MB in the beginning and 157.4 MB in the end (delta: -94.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,291 INFO L168 Benchmark]: Witness Printer took 82.27 ms. Allocated memory is still 226.5 MB. Free memory was 157.4 MB in the beginning and 153.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:06:56,294 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 104.9 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 82.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.05 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.32 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 426.21 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 63.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16835.65 ms. Allocated memory was 104.9 MB in the beginning and 226.5 MB in the end (delta: 121.6 MB). Free memory was 62.9 MB in the beginning and 157.4 MB in the end (delta: -94.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 16.1 GB. * Witness Printer took 82.27 ms. Allocated memory is still 226.5 MB. Free memory was 157.4 MB in the beginning and 153.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && d % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || ((((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) && d * -1 / -2 <= r)) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && d % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || ((((B == d && p == 1) && q == 0) && A == r) && d == 1)) || ((((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) && d * -1 / -2 <= r) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && d % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || ((((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) && d * -1 / -2 <= r)) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((B == 1 && d == p * B) && 1 == cond) && A == q + r) && 0 < p * B - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && d % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || ((((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) && d * -1 / -2 <= r)) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.8s, OverallIterations: 18, TraceHistogramMax: 4, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 417 SDtfs, 724 SDslu, 1080 SDs, 0 SdLazy, 2605 SolverSat, 523 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 521 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 188 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 62 NumberOfFragments, 411 HoareAnnotationTreeSize, 9 FomulaSimplifications, 33966 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5135 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 496 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 478 ConstructedInterpolants, 0 QuantifiedInterpolants, 194868 SizeOfPredicates, 151 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 490 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 118/343 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...