./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/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 ed46dd72b47544e751c43723d7d519a92e121aab ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:53:48,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:53:48,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:53:48,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:53:48,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:53:48,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:53:48,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:53:48,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:53:48,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:53:48,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:53:48,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:53:48,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:53:48,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:53:48,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:53:48,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:53:48,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:53:48,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:53:48,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:53:48,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:53:48,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:53:48,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:53:48,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:53:48,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:53:48,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:53:48,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:53:48,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:53:48,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:53:48,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:53:48,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:53:48,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:53:48,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:53:48,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:53:48,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:53:48,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:53:48,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:53:48,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:53:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:53:48,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:53:48,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:53:48,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:53:48,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:53:48,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:53:48,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:53:48,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:53:48,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:53:48,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:53:48,453 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:53:48,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:53:48,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:53:48,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:53:48,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:53:48,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:53:48,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:53:48,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:53:48,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:53:48,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:53:48,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:53:48,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:53:48,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:53:48,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:53:48,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:53:48,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:53:48,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:53:48,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:53:48,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:53:48,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:53:48,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:53:48,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:53:48,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:53:48,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:53:48,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:53:48,462 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_a7275dd9-6004-4974-99e2-52d6f1572a33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed46dd72b47544e751c43723d7d519a92e121aab [2020-11-29 22:53:48,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:53:48,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:53:48,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:53:48,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:53:48,924 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:53:48,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2020-11-29 22:53:49,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/data/b3b5a6b19/4c9c38129703463c9f981150dd6191bc/FLAGda967ceb5 [2020-11-29 22:53:49,630 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:53:49,630 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2020-11-29 22:53:49,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/data/b3b5a6b19/4c9c38129703463c9f981150dd6191bc/FLAGda967ceb5 [2020-11-29 22:53:50,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/data/b3b5a6b19/4c9c38129703463c9f981150dd6191bc [2020-11-29 22:53:50,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:53:50,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:53:50,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:53:50,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:53:50,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:53:50,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4473098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50, skipping insertion in model container [2020-11-29 22:53:50,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:53:50,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:53:50,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:53:50,394 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:53:50,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:53:50,484 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:53:50,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50 WrapperNode [2020-11-29 22:53:50,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:53:50,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:53:50,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:53:50,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:53:50,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:53:50,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:53:50,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:53:50,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:53:50,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... [2020-11-29 22:53:50,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:53:50,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:53:50,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:53:50,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:53:50,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:53:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:53:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:53:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:53:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:54:02,561 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:54:02,561 INFO L298 CfgBuilder]: Removed 44 assume(true) statements. [2020-11-29 22:54:02,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:54:02 BoogieIcfgContainer [2020-11-29 22:54:02,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:54:02,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:54:02,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:54:02,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:54:02,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:53:50" (1/3) ... [2020-11-29 22:54:02,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39460f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:54:02, skipping insertion in model container [2020-11-29 22:54:02,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:53:50" (2/3) ... [2020-11-29 22:54:02,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39460f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:54:02, skipping insertion in model container [2020-11-29 22:54:02,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:54:02" (3/3) ... [2020-11-29 22:54:02,586 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2020-11-29 22:54:02,600 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:54:02,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-29 22:54:02,616 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-29 22:54:02,643 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:54:02,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:54:02,644 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:54:02,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:54:02,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:54:02,645 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:54:02,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:54:02,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:54:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-11-29 22:54:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:54:02,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:02,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:02,673 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash -577938953, now seen corresponding path program 1 times [2020-11-29 22:54:02,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:02,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220825996] [2020-11-29 22:54:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:02,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220825996] [2020-11-29 22:54:02,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:02,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:54:02,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171289167] [2020-11-29 22:54:02,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:54:02,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:02,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:54:02,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:54:02,890 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-11-29 22:54:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:02,927 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2020-11-29 22:54:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:54:02,929 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 22:54:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:02,941 INFO L225 Difference]: With dead ends: 97 [2020-11-29 22:54:02,949 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 22:54:02,954 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 [2020-11-29 22:54:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 22:54:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-29 22:54:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 22:54:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-11-29 22:54:03,012 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2020-11-29 22:54:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:03,013 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-11-29 22:54:03,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:54:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-11-29 22:54:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:54:03,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:03,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:03,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:54:03,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2020-11-29 22:54:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:03,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25597362] [2020-11-29 22:54:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:03,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25597362] [2020-11-29 22:54:03,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:03,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:54:03,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878587582] [2020-11-29 22:54:03,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:54:03,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:54:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:54:03,101 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2020-11-29 22:54:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:03,142 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-11-29 22:54:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:54:03,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:54:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:03,148 INFO L225 Difference]: With dead ends: 87 [2020-11-29 22:54:03,149 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 22:54:03,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:54:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 22:54:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-29 22:54:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 22:54:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 22:54:03,171 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2020-11-29 22:54:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:03,172 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 22:54:03,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:54:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 22:54:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:54:03,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:03,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:03,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:54:03,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2020-11-29 22:54:03,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:03,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445735914] [2020-11-29 22:54:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:03,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445735914] [2020-11-29 22:54:03,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:03,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:54:03,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872032738] [2020-11-29 22:54:03,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:54:03,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:03,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:54:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:03,548 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 22:54:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:23,017 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-11-29 22:54:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:54:23,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 22:54:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:23,020 INFO L225 Difference]: With dead ends: 74 [2020-11-29 22:54:23,020 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 22:54:23,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:54:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 22:54:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-11-29 22:54:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:54:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-11-29 22:54:23,030 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 11 [2020-11-29 22:54:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:23,031 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-11-29 22:54:23,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:54:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-11-29 22:54:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:54:23,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:23,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:23,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:54:23,032 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1083307667, now seen corresponding path program 1 times [2020-11-29 22:54:23,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:23,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899870424] [2020-11-29 22:54:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:23,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:54:23,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149842788] [2020-11-29 22:54:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:23,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:54:23,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:23,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899870424] [2020-11-29 22:54:23,209 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:54:23,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149842788] [2020-11-29 22:54:23,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:23,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:54:23,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27257973] [2020-11-29 22:54:23,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:54:23,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:54:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:23,212 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 5 states. [2020-11-29 22:54:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:23,263 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-11-29 22:54:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:54:23,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 22:54:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:23,269 INFO L225 Difference]: With dead ends: 59 [2020-11-29 22:54:23,269 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:54:23,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:54:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-11-29 22:54:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:54:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 22:54:23,280 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2020-11-29 22:54:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:23,280 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 22:54:23,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:54:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 22:54:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:54:23,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:23,282 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:23,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:23,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:23,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2020-11-29 22:54:23,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:23,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804217959] [2020-11-29 22:54:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:23,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804217959] [2020-11-29 22:54:23,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864463604] [2020-11-29 22:54:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:23,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:54:23,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:23,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:54:23,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 22:54:23,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111519876] [2020-11-29 22:54:23,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:54:23,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:54:23,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:23,725 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-11-29 22:54:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:23,781 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-11-29 22:54:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:54:23,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 22:54:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:23,787 INFO L225 Difference]: With dead ends: 95 [2020-11-29 22:54:23,788 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 22:54:23,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:54:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 22:54:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 22:54:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 22:54:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-29 22:54:23,806 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2020-11-29 22:54:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:23,806 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-29 22:54:23,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:54:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-29 22:54:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:54:23,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:23,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:24,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:24,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2020-11-29 22:54:24,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926326486] [2020-11-29 22:54:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926326486] [2020-11-29 22:54:24,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:24,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:54:24,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715956794] [2020-11-29 22:54:24,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:54:24,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:24,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:54:24,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:54:24,178 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-11-29 22:54:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:24,239 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-11-29 22:54:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:54:24,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 22:54:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:24,244 INFO L225 Difference]: With dead ends: 88 [2020-11-29 22:54:24,244 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 22:54:24,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:54:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 22:54:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-29 22:54:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 22:54:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-11-29 22:54:24,258 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 14 [2020-11-29 22:54:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:24,264 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-11-29 22:54:24,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:54:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-11-29 22:54:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:54:24,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:24,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:24,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:54:24,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash -937019527, now seen corresponding path program 1 times [2020-11-29 22:54:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316611838] [2020-11-29 22:54:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:24,282 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:54:24,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125173421] [2020-11-29 22:54:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:24,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:54:24,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:24,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316611838] [2020-11-29 22:54:24,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:54:24,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125173421] [2020-11-29 22:54:24,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:24,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:54:24,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908962899] [2020-11-29 22:54:24,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:54:24,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:54:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:54:24,394 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 4 states. [2020-11-29 22:54:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:27,498 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-29 22:54:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:54:27,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 22:54:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:27,500 INFO L225 Difference]: With dead ends: 66 [2020-11-29 22:54:27,501 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 22:54:27,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 22:54:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-29 22:54:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 22:54:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-11-29 22:54:27,508 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 15 [2020-11-29 22:54:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:27,509 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-11-29 22:54:27,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:54:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-11-29 22:54:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:54:27,510 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:27,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:27,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:27,711 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:27,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1597546870, now seen corresponding path program 1 times [2020-11-29 22:54:27,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:54:27,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522840674] [2020-11-29 22:54:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:54:27,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:54:27,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930198638] [2020-11-29 22:54:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/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 [2020-11-29 22:54:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:27,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:54:27,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 22:54:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522840674] [2020-11-29 22:54:27,857 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:54:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930198638] [2020-11-29 22:54:27,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:27,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:54:27,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686398197] [2020-11-29 22:54:27,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:54:27,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:54:27,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:54:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:54:27,859 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 4 states. [2020-11-29 22:54:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:28,021 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-11-29 22:54:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:54:28,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 22:54:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:28,023 INFO L225 Difference]: With dead ends: 42 [2020-11-29 22:54:28,023 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:54:28,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:54:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:54:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:54:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:54:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:54:28,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-29 22:54:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:28,025 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:54:28,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:54:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:54:28,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:54:28,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:54:28,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:54:28,448 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-11-29 22:54:28,819 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-11-29 22:54:28,902 INFO L277 CegarLoopResult]: At program point L60(lines 20 61) the Hoare annotation is: true [2020-11-29 22:54:28,902 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,902 INFO L274 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-11-29 22:54:28,902 INFO L274 CegarLoopResult]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2020-11-29 22:54:28,903 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,903 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:54:28,903 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:54:28,903 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,903 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= (+ (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) ULTIMATE.start_main_~r~0 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296)) 1) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,903 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,904 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,904 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,904 INFO L270 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,904 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,904 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,904 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,905 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,905 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,913 INFO L270 CegarLoopResult]: At program point L12-11(lines 46 47) the Hoare annotation is: (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 22:54:28,914 INFO L274 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,914 INFO L270 CegarLoopResult]: At program point L12-13(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~p~0 0))) (or (and (= ULTIMATE.start_main_~h~0 0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) .cse1) (and (= ULTIMATE.start_main_~q~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (<= (+ (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) ULTIMATE.start_main_~r~0 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296)) 1) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) .cse1))) [2020-11-29 22:54:28,914 INFO L274 CegarLoopResult]: For program point L12-14(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,915 INFO L270 CegarLoopResult]: At program point L12-15(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~p~0 0))) (or (and (= ULTIMATE.start_main_~h~0 0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 2 ~counter~0) .cse1) (and (= ULTIMATE.start_main_~q~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (<= (+ (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) ULTIMATE.start_main_~r~0 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296)) 1) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) .cse1))) [2020-11-29 22:54:28,915 INFO L274 CegarLoopResult]: For program point L12-16(lines 12 15) no Hoare annotation was computed. [2020-11-29 22:54:28,915 INFO L277 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-11-29 22:54:28,915 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,916 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,916 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,916 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,921 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,921 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,921 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point L38(lines 38 56) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2020-11-29 22:54:28,922 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,923 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2020-11-29 22:54:28,923 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~h~0 0)) (.cse1 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse2 (= ULTIMATE.start_main_~p~0 0))) (or (and (<= 1 ~counter~0) .cse0 .cse1 .cse2) (and (= ULTIMATE.start_main_~q~0 1) .cse0 .cse1 (<= 0 ~counter~0) .cse2))) [2020-11-29 22:54:28,923 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-29 22:54:28,923 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,923 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,924 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 22:54:28,925 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 22:54:28,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:54:28 BoogieIcfgContainer [2020-11-29 22:54:28,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:54:28,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:54:28,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:54:28,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:54:28,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:54:02" (3/4) ... [2020-11-29 22:54:28,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:54:28,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 22:54:28,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:54:28,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:54:28,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:54:29,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a7275dd9-6004-4974-99e2-52d6f1572a33/bin/uautomizer/witness.graphml [2020-11-29 22:54:29,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:54:29,066 INFO L168 Benchmark]: Toolchain (without parser) took 39028.12 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 44.3 MB in the beginning and 48.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,067 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:54:29,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.73 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 44.1 MB in the beginning and 71.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.92 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,069 INFO L168 Benchmark]: Boogie Preprocessor took 45.55 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,070 INFO L168 Benchmark]: RCFGBuilder took 11934.17 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 49.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,070 INFO L168 Benchmark]: TraceAbstraction took 26399.03 ms. Allocated memory is still 94.4 MB. Free memory was 48.7 MB in the beginning and 52.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,074 INFO L168 Benchmark]: Witness Printer took 99.94 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 48.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:29,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 50.5 MB in the beginning and 50.5 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.73 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 44.1 MB in the beginning and 71.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.92 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.55 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11934.17 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 49.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26399.03 ms. Allocated memory is still 94.4 MB. Free memory was 48.7 MB in the beginning and 52.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 99.94 ms. Allocated memory is still 94.4 MB. Free memory was 52.9 MB in the beginning and 48.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((h == 0 && n == r) && 1 <= cond) && 2 <= counter) && p == 0) || ((((q == 1 && !(0 == cond)) && n == r) && 4294967296 * ((q + p * 2) / 4294967296) + r + 4294967296 * (q / 4294967296) + 1 <= q + 4294967296 * (r / 4294967296)) && p == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((q == 1 && !(0 == cond)) && h == 0) && n == r) && 4294967296 * ((q + p * 2) / 4294967296) + r + 4294967296 * (q / 4294967296) + 1 <= q + 4294967296 * (r / 4294967296)) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && p == 0) || ((((q == 1 && h == 0) && n == r) && 0 <= counter) && p == 0) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((h == 0 && n == r) && 1 <= cond) && 2 <= counter) && p == 0) || ((((q == 1 && !(0 == cond)) && n == r) && 4294967296 * ((q + p * 2) / 4294967296) + r + 4294967296 * (q / 4294967296) + 1 <= q + 4294967296 * (r / 4294967296)) && p == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((q == 1 && h == 0) && n == r) && 1 <= cond) && 2 <= counter) && p == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.5s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 318 SDtfs, 183 SDslu, 487 SDs, 0 SdLazy, 169 SolverSat, 59 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 21.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 26 NumberOfFragments, 284 HoareAnnotationTreeSize, 11 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 5773 SizeOfPredicates, 15 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/10 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...