./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.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_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 9ed748155954ba99e6e57d7fa3ec0dae8b69471a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:01:41,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:01:41,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:01:41,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:01:41,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:01:41,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:01:42,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:01:42,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:01:42,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:01:42,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:01:42,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:01:42,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:01:42,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:01:42,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:01:42,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:01:42,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:01:42,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:01:42,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:01:42,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:01:42,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:01:42,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:01:42,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:01:42,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:01:42,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:01:42,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:01:42,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:01:42,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:01:42,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:01:42,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:01:42,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:01:42,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:01:42,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:01:42,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:01:42,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:01:42,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:01:42,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:01:42,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:01:42,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:01:42,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:01:42,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:01:42,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:01:42,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:01:42,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:01:42,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:01:42,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:01:42,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:01:42,120 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:01:42,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:01:42,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:01:42,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:01:42,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:01:42,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:01:42,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:01:42,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:01:42,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:01:42,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:01:42,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:01:42,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:01:42,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:01:42,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:01:42,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:01:42,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:01:42,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:01:42,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:01:42,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:01:42,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:01:42,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:01:42,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:01:42,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:01:42,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:01:42,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:01:42,127 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_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ed748155954ba99e6e57d7fa3ec0dae8b69471a [2020-11-30 00:01:42,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:01:42,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:01:42,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:01:42,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:01:42,578 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:01:42,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2020-11-30 00:01:42,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/data/7becbfdcb/b20a7e7960984ca28252a5dd7c8a6ee0/FLAG36ec09be9 [2020-11-30 00:01:43,318 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:01:43,319 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2020-11-30 00:01:43,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/data/7becbfdcb/b20a7e7960984ca28252a5dd7c8a6ee0/FLAG36ec09be9 [2020-11-30 00:01:43,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/data/7becbfdcb/b20a7e7960984ca28252a5dd7c8a6ee0 [2020-11-30 00:01:43,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:01:43,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:01:43,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:01:43,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:01:43,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:01:43,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:01:43" (1/1) ... [2020-11-30 00:01:43,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5317771c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:43, skipping insertion in model container [2020-11-30 00:01:43,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:01:43" (1/1) ... [2020-11-30 00:01:43,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:01:43,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:01:43,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:01:43,992 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:01:44,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:01:44,062 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:01:44,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44 WrapperNode [2020-11-30 00:01:44,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:01:44,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:01:44,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:01:44,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:01:44,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:01:44,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:01:44,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:01:44,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:01:44,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... [2020-11-30 00:01:44,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:01:44,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:01:44,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:01:44,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:01:44,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:01:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:01:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:01:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:01:44,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:01:44,686 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 00:01:44,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:44 BoogieIcfgContainer [2020-11-30 00:01:44,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:01:44,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:01:44,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:01:44,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:01:44,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:01:43" (1/3) ... [2020-11-30 00:01:44,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e83575a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:01:44, skipping insertion in model container [2020-11-30 00:01:44,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:44" (2/3) ... [2020-11-30 00:01:44,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e83575a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:01:44, skipping insertion in model container [2020-11-30 00:01:44,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:44" (3/3) ... [2020-11-30 00:01:44,716 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll.c [2020-11-30 00:01:44,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:01:44,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 00:01:44,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:01:44,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:01:44,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:01:44,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:01:44,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:01:44,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:01:44,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:01:44,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:01:44,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:01:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-30 00:01:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:01:44,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:44,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:01:44,856 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:44,862 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-11-30 00:01:44,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:44,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45465934] [2020-11-30 00:01:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:45,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45465934] [2020-11-30 00:01:45,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:01:45,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:01:45,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162814061] [2020-11-30 00:01:45,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:01:45,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:45,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:01:45,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:01:45,143 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-11-30 00:01:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:45,474 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-11-30 00:01:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:01:45,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 00:01:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:45,499 INFO L225 Difference]: With dead ends: 85 [2020-11-30 00:01:45,499 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:01:45,503 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 [2020-11-30 00:01:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:01:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2020-11-30 00:01:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:01:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-30 00:01:45,551 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 5 [2020-11-30 00:01:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:45,552 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-30 00:01:45,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:01:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-30 00:01:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:01:45,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:45,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:45,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:01:45,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1810846125, now seen corresponding path program 1 times [2020-11-30 00:01:45,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:45,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505617463] [2020-11-30 00:01:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:45,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:45,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993829649] [2020-11-30 00:01:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:45,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:01:45,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505617463] [2020-11-30 00:01:45,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:45,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993829649] [2020-11-30 00:01:45,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:01:45,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:01:45,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790431215] [2020-11-30 00:01:45,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:01:45,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:45,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:01:45,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:01:45,770 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 4 states. [2020-11-30 00:01:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:45,918 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-11-30 00:01:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:01:45,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:01:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:45,921 INFO L225 Difference]: With dead ends: 48 [2020-11-30 00:01:45,921 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:01:45,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:01:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-30 00:01:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 00:01:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-30 00:01:45,942 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 7 [2020-11-30 00:01:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:45,943 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-30 00:01:45,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:01:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-30 00:01:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:01:45,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:45,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:46,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:01:46,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 761557936, now seen corresponding path program 1 times [2020-11-30 00:01:46,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:46,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783255622] [2020-11-30 00:01:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:46,175 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:46,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973290641] [2020-11-30 00:01:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:46,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:01:46,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:46,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783255622] [2020-11-30 00:01:46,298 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:46,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973290641] [2020-11-30 00:01:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:01:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:01:46,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564952469] [2020-11-30 00:01:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:01:46,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:46,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:01:46,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:01:46,301 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 4 states. [2020-11-30 00:01:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:46,411 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-11-30 00:01:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:01:46,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:01:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:46,413 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:01:46,413 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 00:01:46,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 00:01:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-11-30 00:01:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 00:01:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-11-30 00:01:46,423 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 9 [2020-11-30 00:01:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:46,424 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-11-30 00:01:46,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:01:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-11-30 00:01:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:01:46,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:46,426 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:46,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:46,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:46,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1561093752, now seen corresponding path program 1 times [2020-11-30 00:01:46,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:46,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588513473] [2020-11-30 00:01:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:46,658 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:46,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430001547] [2020-11-30 00:01:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:46,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:01:46,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:46,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588513473] [2020-11-30 00:01:46,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:46,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430001547] [2020-11-30 00:01:46,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:46,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:01:46,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488347800] [2020-11-30 00:01:46,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:01:46,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:01:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:46,792 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 5 states. [2020-11-30 00:01:46,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:46,943 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-30 00:01:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:01:46,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:01:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:46,945 INFO L225 Difference]: With dead ends: 59 [2020-11-30 00:01:46,945 INFO L226 Difference]: Without dead ends: 55 [2020-11-30 00:01:46,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:01:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-30 00:01:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-11-30 00:01:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:01:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-30 00:01:46,955 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 12 [2020-11-30 00:01:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:46,955 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-30 00:01:46,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:01:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-30 00:01:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:01:46,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:46,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:47,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:47,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:47,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1267695675, now seen corresponding path program 1 times [2020-11-30 00:01:47,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:47,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985428033] [2020-11-30 00:01:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:47,196 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:47,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286048371] [2020-11-30 00:01:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:47,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:01:47,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:47,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985428033] [2020-11-30 00:01:47,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:47,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286048371] [2020-11-30 00:01:47,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:47,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:01:47,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596584458] [2020-11-30 00:01:47,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:01:47,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:47,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:01:47,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:47,330 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-11-30 00:01:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:47,493 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-11-30 00:01:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:01:47,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:01:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:47,498 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:01:47,498 INFO L226 Difference]: Without dead ends: 51 [2020-11-30 00:01:47,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:01:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-30 00:01:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-11-30 00:01:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:01:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-11-30 00:01:47,513 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 14 [2020-11-30 00:01:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:47,514 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-11-30 00:01:47,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:01:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-11-30 00:01:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:01:47,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:47,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:47,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:47,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1514981698, now seen corresponding path program 1 times [2020-11-30 00:01:47,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:47,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281682259] [2020-11-30 00:01:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:47,753 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:47,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571086449] [2020-11-30 00:01:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:47,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:01:47,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:47,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281682259] [2020-11-30 00:01:47,895 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:47,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571086449] [2020-11-30 00:01:47,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:47,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:01:47,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903481620] [2020-11-30 00:01:47,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:01:47,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:01:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:47,898 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-11-30 00:01:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:48,058 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-11-30 00:01:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:01:48,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 00:01:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:48,060 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:01:48,060 INFO L226 Difference]: Without dead ends: 42 [2020-11-30 00:01:48,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:01:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-30 00:01:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-30 00:01:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:01:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-30 00:01:48,071 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 16 [2020-11-30 00:01:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:48,072 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-30 00:01:48,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:01:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-30 00:01:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:01:48,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:48,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 00:01:48,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:01:48,274 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1297538902, now seen corresponding path program 2 times [2020-11-30 00:01:48,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:48,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764842152] [2020-11-30 00:01:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:48,288 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:48,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111254635] [2020-11-30 00:01:48,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:48,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:01:48,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:01:48,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:01:48,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:48,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764842152] [2020-11-30 00:01:48,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:48,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111254635] [2020-11-30 00:01:48,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:48,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:01:48,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908985515] [2020-11-30 00:01:48,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:01:48,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:48,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:01:48,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:01:48,430 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 6 states. [2020-11-30 00:01:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:48,646 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-11-30 00:01:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:01:48,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-30 00:01:48,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:48,648 INFO L225 Difference]: With dead ends: 66 [2020-11-30 00:01:48,648 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 00:01:48,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:01:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 00:01:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-11-30 00:01:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 00:01:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-11-30 00:01:48,658 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 19 [2020-11-30 00:01:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:48,658 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-11-30 00:01:48,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:01:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-11-30 00:01:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:01:48,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:48,660 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 00:01:48,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:48,888 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1394182675, now seen corresponding path program 2 times [2020-11-30 00:01:48,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:48,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421612066] [2020-11-30 00:01:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:48,902 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:48,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25028295] [2020-11-30 00:01:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:48,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:01:48,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:01:48,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:01:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:49,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421612066] [2020-11-30 00:01:49,082 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:49,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25028295] [2020-11-30 00:01:49,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:49,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:01:49,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311874439] [2020-11-30 00:01:49,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:01:49,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:49,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:01:49,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:01:49,085 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-11-30 00:01:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:49,333 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-11-30 00:01:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:01:49,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-30 00:01:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:49,335 INFO L225 Difference]: With dead ends: 62 [2020-11-30 00:01:49,335 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 00:01:49,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:01:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 00:01:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-11-30 00:01:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 00:01:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-11-30 00:01:49,351 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 21 [2020-11-30 00:01:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:49,352 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-11-30 00:01:49,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:01:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-11-30 00:01:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:01:49,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:49,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-30 00:01:49,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:49,573 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 220432368, now seen corresponding path program 2 times [2020-11-30 00:01:49,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96306347] [2020-11-30 00:01:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:49,583 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:49,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091866238] [2020-11-30 00:01:49,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:01:49,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:01:49,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:01:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:01:49,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:49,714 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:01:49,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:49,794 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:01:49,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:51,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:01:58,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96306347] [2020-11-30 00:01:58,093 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:58,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091866238] [2020-11-30 00:01:58,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:01:58,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:01:58,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243020743] [2020-11-30 00:01:58,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:01:58,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:58,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:01:58,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:01:58,095 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 7 states. [2020-11-30 00:01:58,419 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-30 00:02:05,890 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-30 00:02:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:11,135 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-11-30 00:02:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:02:11,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-30 00:02:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:11,144 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:02:11,144 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 00:02:11,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:02:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 00:02:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-30 00:02:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 00:02:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-11-30 00:02:11,164 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 23 [2020-11-30 00:02:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:11,165 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-11-30 00:02:11,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:02:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-11-30 00:02:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:02:11,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:11,166 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-30 00:02:11,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 00:02:11,392 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:02:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -98440648, now seen corresponding path program 3 times [2020-11-30 00:02:11,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:11,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654993868] [2020-11-30 00:02:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:11,405 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:02:11,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835843783] [2020-11-30 00:02:11,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:02:11,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:02:11,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:02:11,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:02:11,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:11,702 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:02:11,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:02:11,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654993868] [2020-11-30 00:02:11,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:02:11,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835843783] [2020-11-30 00:02:11,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:02:11,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:02:11,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453154669] [2020-11-30 00:02:11,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:02:11,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:11,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:02:11,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:02:11,812 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-11-30 00:02:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:12,043 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-11-30 00:02:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:02:12,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 00:02:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:12,046 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:02:12,046 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:02:12,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:02:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:02:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-30 00:02:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 00:02:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-11-30 00:02:12,058 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 26 [2020-11-30 00:02:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:12,059 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-11-30 00:02:12,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:02:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-11-30 00:02:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:02:12,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:12,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-30 00:02:12,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:12,266 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:02:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash -111995909, now seen corresponding path program 3 times [2020-11-30 00:02:12,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:12,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655661502] [2020-11-30 00:02:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:12,280 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:02:12,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332296604] [2020-11-30 00:02:12,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/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 [2020-11-30 00:02:12,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:02:12,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:02:12,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:02:12,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:12,446 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:02:12,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:12,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:12,815 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-30 00:02:12,820 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:02:12,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:02:13,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655661502] [2020-11-30 00:02:13,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:02:13,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332296604] [2020-11-30 00:02:13,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:13,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:02:13,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313762880] [2020-11-30 00:02:13,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:02:13,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:02:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:02:13,031 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 7 states. [2020-11-30 00:02:13,301 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 00:02:22,774 WARN L193 SmtUtils]: Spent 8.98 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-30 00:02:23,261 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-11-30 00:02:28,606 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 00:02:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:30,639 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-11-30 00:02:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:02:30,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-30 00:02:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:30,640 INFO L225 Difference]: With dead ends: 46 [2020-11-30 00:02:30,640 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:02:30,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:02:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:02:30,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:02:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:02:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:02:30,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-30 00:02:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:30,642 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:02:30,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:02:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:02:30,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:02:30,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:30,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:02:42,000 WARN L193 SmtUtils]: Spent 10.99 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-11-30 00:02:50,509 WARN L193 SmtUtils]: Spent 8.51 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 00:02:50,921 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-11-30 00:03:01,455 WARN L193 SmtUtils]: Spent 10.53 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-11-30 00:03:11,747 WARN L193 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-11-30 00:03:25,426 WARN L193 SmtUtils]: Spent 13.68 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:03:25,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,430 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,430 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-30 00:03:25,430 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,430 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse1 2) (* .cse1 .cse1) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-30 00:03:25,430 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,430 INFO L270 CegarLoopResult]: At program point L12-5(lines 35 36) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-30 00:03:25,430 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,431 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:03:25,431 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,431 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))))) [2020-11-30 00:03:25,431 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:03:25,431 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-30 00:03:25,431 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L270 CegarLoopResult]: At program point L29-2(lines 29 41) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L29-3(lines 29 41) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:03:25,432 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:03:25,433 INFO L270 CegarLoopResult]: At program point L47(lines 20 48) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-30 00:03:25,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:03:25 BoogieIcfgContainer [2020-11-30 00:03:25,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:03:25,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:03:25,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:03:25,459 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:03:25,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:44" (3/4) ... [2020-11-30 00:03:25,463 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:03:25,474 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 00:03:25,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:03:25,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:03:25,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:03:25,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b3779dd7-12e6-4fbc-8148-1f5d5a3a637c/bin/uautomizer/witness.graphml [2020-11-30 00:03:25,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:03:25,529 INFO L168 Benchmark]: Toolchain (without parser) took 101860.39 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 60.9 MB in the beginning and 86.5 MB in the end (delta: -25.5 MB). Peak memory consumption was 157.9 kB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,530 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory was 77.5 MB in the beginning and 77.4 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:03:25,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.25 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 73.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.97 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,532 INFO L168 Benchmark]: Boogie Preprocessor took 27.93 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:03:25,533 INFO L168 Benchmark]: RCFGBuilder took 536.12 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 57.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,534 INFO L168 Benchmark]: TraceAbstraction took 100764.88 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 56.8 MB in the beginning and 88.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,535 INFO L168 Benchmark]: Witness Printer took 69.66 ms. Allocated memory is still 123.7 MB. Free memory was 88.6 MB in the beginning and 86.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:03:25,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory was 77.5 MB in the beginning and 77.4 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.25 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 73.5 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.97 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.93 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 536.12 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 57.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 100764.88 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 56.8 MB in the beginning and 88.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.66 ms. Allocated memory is still 123.7 MB. Free memory was 88.6 MB in the beginning and 86.5 MB in the end (delta: 2.1 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: 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 6 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t)) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((s == 1 && a == 0) && t == 1) || ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1) && 1 == cond) && a * 2 + 1 == t - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 46.0s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 32.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 54.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 218 SDslu, 382 SDs, 0 SdLazy, 579 SolverSat, 115 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, 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, 11 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 35 NumberOfFragments, 305 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2381 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 54.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 180 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 169 ConstructedInterpolants, 1 QuantifiedInterpolants, 18639 SizeOfPredicates, 54 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 78/117 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...