./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.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_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/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 dac6403f37599f80fd46825f02fd0972bc86095b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:47,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:47,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:47,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:47,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:47,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:47,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:47,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:47,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:47,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:47,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:47,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:47,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:47,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:47,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:47,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:47,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:47,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:47,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:47,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:47,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:47,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:47,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:47,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:47,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:47,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:47,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:47,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:47,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:47,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:47,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:47,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:47,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:47,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:47,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:47,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:47,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:47,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:47,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:47,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:47,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:47,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:47,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:47,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:47,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:47,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:47,922 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:47,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:47,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:47,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:47,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:47,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:47,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:47,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:47,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:47,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:47,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:47,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:47,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:47,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:47,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:47,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:47,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:47,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:47,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:47,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:47,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:47,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:47,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:47,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:47,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:47,928 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_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2020-11-28 02:58:48,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:48,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:48,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:48,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:48,284 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:48,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test24-1.c [2020-11-28 02:58:48,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/data/b2c8f3a44/bcc819fb55fd4fef94954a39564fba17/FLAG88087d850 [2020-11-28 02:58:48,918 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:48,919 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/sv-benchmarks/c/ldv-regression/test24-1.c [2020-11-28 02:58:48,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/data/b2c8f3a44/bcc819fb55fd4fef94954a39564fba17/FLAG88087d850 [2020-11-28 02:58:49,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/data/b2c8f3a44/bcc819fb55fd4fef94954a39564fba17 [2020-11-28 02:58:49,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:49,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:49,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:49,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:49,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:49,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61936c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49, skipping insertion in model container [2020-11-28 02:58:49,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:49,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:49,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:49,542 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:49,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:49,574 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:49,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49 WrapperNode [2020-11-28 02:58:49,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:49,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:49,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:49,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:49,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:49,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:49,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:49,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:49,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... [2020-11-28 02:58:49,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:49,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:49,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:49,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:49,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:50,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:50,184 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:58:50,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:50 BoogieIcfgContainer [2020-11-28 02:58:50,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:50,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:50,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:50,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:50,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:49" (1/3) ... [2020-11-28 02:58:50,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b342ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:50, skipping insertion in model container [2020-11-28 02:58:50,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:49" (2/3) ... [2020-11-28 02:58:50,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b342ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:50, skipping insertion in model container [2020-11-28 02:58:50,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:50" (3/3) ... [2020-11-28 02:58:50,196 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-11-28 02:58:50,208 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:50,213 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:50,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:50,263 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:50,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:50,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:50,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:50,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:50,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:50,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:50,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 02:58:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:58:50,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:50,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:50,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2020-11-28 02:58:50,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:50,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948762166] [2020-11-28 02:58:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:50,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948762166] [2020-11-28 02:58:50,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:50,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:50,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016415399] [2020-11-28 02:58:50,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:50,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:50,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:50,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:50,524 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-28 02:58:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:50,541 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-11-28 02:58:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:50,542 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 02:58:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:50,557 INFO L225 Difference]: With dead ends: 24 [2020-11-28 02:58:50,557 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:58:50,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:58:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:58:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:58:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 02:58:50,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-28 02:58:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:50,595 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 02:58:50,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 02:58:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:50,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:50,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:50,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:50,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:50,600 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2020-11-28 02:58:50,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:50,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890452156] [2020-11-28 02:58:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:50,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890452156] [2020-11-28 02:58:50,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:50,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:50,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921605482] [2020-11-28 02:58:50,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:50,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:50,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:50,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:50,819 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2020-11-28 02:58:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:50,908 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 02:58:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:50,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 02:58:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:50,910 INFO L225 Difference]: With dead ends: 17 [2020-11-28 02:58:50,911 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 02:58:50,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 02:58:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 02:58:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:58:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 02:58:50,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-11-28 02:58:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:50,915 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 02:58:50,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 02:58:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:50,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:50,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:50,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2020-11-28 02:58:50,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:50,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392990621] [2020-11-28 02:58:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:51,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392990621] [2020-11-28 02:58:51,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757266378] [2020-11-28 02:58:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:51,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 02:58:51,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:51,388 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-28 02:58:51,390 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:51,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:51,396 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:58:51,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-28 02:58:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:51,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:51,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2020-11-28 02:58:51,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46358950] [2020-11-28 02:58:51,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:58:51,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:58:51,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:51,424 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2020-11-28 02:58:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:51,667 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-28 02:58:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:58:51,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-11-28 02:58:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:51,670 INFO L225 Difference]: With dead ends: 23 [2020-11-28 02:58:51,670 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 02:58:51,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-11-28 02:58:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 02:58:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 02:58:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 02:58:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 02:58:51,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-28 02:58:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:51,676 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 02:58:51,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:58:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 02:58:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:51,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:51,678 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:51,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:58:51,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1868061597, now seen corresponding path program 2 times [2020-11-28 02:58:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:51,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959898301] [2020-11-28 02:58:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:52,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959898301] [2020-11-28 02:58:52,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114160626] [2020-11-28 02:58:52,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:52,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:58:52,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:58:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 02:58:52,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:52,180 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2020-11-28 02:58:52,180 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:58:52,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:58:52,193 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 02:58:52,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:59 [2020-11-28 02:59:19,929 INFO L350 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2020-11-28 02:59:19,929 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 17 [2020-11-28 02:59:19,931 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:19,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:19,949 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:19,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:60, output treesize:5 [2020-11-28 02:59:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:19,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:19,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-11-28 02:59:19,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139155966] [2020-11-28 02:59:19,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 02:59:19,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:19,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 02:59:19,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=107, Unknown=11, NotChecked=0, Total=182 [2020-11-28 02:59:19,963 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2020-11-28 02:59:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:20,538 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-28 02:59:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:59:20,539 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-28 02:59:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:20,540 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:59:20,540 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 02:59:20,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=194, Invalid=347, Unknown=11, NotChecked=0, Total=552 [2020-11-28 02:59:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 02:59:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 02:59:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 02:59:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 02:59:20,545 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-11-28 02:59:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:20,546 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 02:59:20,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 02:59:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 02:59:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:59:20,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:20,547 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:20,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:20,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:20,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:20,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1598933096, now seen corresponding path program 3 times [2020-11-28 02:59:20,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:20,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545885427] [2020-11-28 02:59:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:20,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545885427] [2020-11-28 02:59:20,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265093208] [2020-11-28 02:59:20,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:20,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 02:59:20,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:20,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 02:59:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:21,011 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-11-28 02:59:21,011 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:59:21,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:59:21,024 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:59:21,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-11-28 02:59:21,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:59:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 02:59:21,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:21,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-11-28 02:59:21,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906984060] [2020-11-28 02:59:21,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 02:59:21,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:21,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 02:59:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-11-28 02:59:21,351 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 17 states. [2020-11-28 02:59:21,914 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-28 02:59:22,368 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-11-28 02:59:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:23,010 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 02:59:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 02:59:23,010 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2020-11-28 02:59:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:23,011 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:59:23,011 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:59:23,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-11-28 02:59:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:59:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:59:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:59:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:23,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 02:59:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:23,013 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:23,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 02:59:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:23,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:59:23,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:23,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:59:23,411 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:59:23,411 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-28 02:59:23,411 INFO L274 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-11-28 02:59:23,411 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2020-11-28 02:59:23,412 INFO L270 CegarLoopResult]: At program point L13(lines 11 14) the Hoare annotation is: (and (exists ((aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 Int) (aux_div_ULTIMATE.start_main_~pa~0.offset_91 Int)) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|)) (.cse2 (* aux_div_ULTIMATE.start_main_~pa~0.offset_91 8))) (let ((.cse0 (* 8 aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51)) (.cse3 (select .cse1 (+ (* aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 8) |ULTIMATE.start_main_~#ad1~0.offset| .cse2)))) (and (< .cse0 8) (<= 0 .cse0) (= (select .cse1 (+ |ULTIMATE.start_main_~#ad1~0.offset| .cse2)) aux_div_ULTIMATE.start_main_~pa~0.offset_91) (< ULTIMATE.start_main_~i~0 (+ .cse3 1)) (<= .cse3 ULTIMATE.start_main_~i~0))))) (<= 1 |ULTIMATE.start_check_#res|) (let ((.cse4 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse4 8))) .cse4)) (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1))) [2020-11-28 02:59:23,412 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 02:59:23,412 INFO L270 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-11-28 02:59:23,412 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:59:23,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:59:23,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:59:23,412 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-11-28 02:59:23,413 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (let ((.cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))) .cse0)) (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1))) [2020-11-28 02:59:23,413 INFO L274 CegarLoopResult]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2020-11-28 02:59:23,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 02:59:23,413 INFO L277 CegarLoopResult]: At program point L39(lines 16 40) the Hoare annotation is: true [2020-11-28 02:59:23,423 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,424 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,425 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,444 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,445 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,446 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,447 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,448 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,448 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,448 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,448 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,451 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,453 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,453 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:23 BoogieIcfgContainer [2020-11-28 02:59:23,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:23,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:23,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:23,462 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:23,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:50" (3/4) ... [2020-11-28 02:59:23,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:59:23,474 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 02:59:23,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 02:59:23,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:23,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:23,497 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_91 : int :: (((8 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 < 8 && 0 <= 8 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51) && unknown-#memory_int-unknown[ad1][ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] == aux_div_ULTIMATE.start_main_~pa~0.offset_91) && i < unknown-#memory_int-unknown[ad1][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 * 8 + ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] + 1) && unknown-#memory_int-unknown[ad1][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 * 8 + ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] <= i) && 1 <= \result) && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && (ad1 * 7 + pa) % 8 == 0) && ad1 == 0) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1 [2020-11-28 02:59:23,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fdb4ac93-ccb2-48a4-ab91-39021e06c21d/bin/uautomizer/witness.graphml [2020-11-28 02:59:23,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:23,516 INFO L168 Benchmark]: Toolchain (without parser) took 34219.97 ms. Allocated memory is still 138.4 MB. Free memory was 110.5 MB in the beginning and 101.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,516 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:23,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 138.4 MB. Free memory was 110.0 MB in the beginning and 116.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.63 ms. Allocated memory is still 138.4 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,518 INFO L168 Benchmark]: Boogie Preprocessor took 23.25 ms. Allocated memory is still 138.4 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 946.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:23,519 INFO L168 Benchmark]: RCFGBuilder took 552.78 ms. Allocated memory is still 138.4 MB. Free memory was 113.5 MB in the beginning and 100.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,519 INFO L168 Benchmark]: TraceAbstraction took 33272.64 ms. Allocated memory is still 138.4 MB. Free memory was 99.8 MB in the beginning and 104.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,520 INFO L168 Benchmark]: Witness Printer took 53.10 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 101.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:23,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 138.4 MB. Free memory was 110.0 MB in the beginning and 116.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.63 ms. Allocated memory is still 138.4 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.25 ms. Allocated memory is still 138.4 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 946.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 552.78 ms. Allocated memory is still 138.4 MB. Free memory was 113.5 MB in the beginning and 100.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33272.64 ms. Allocated memory is still 138.4 MB. Free memory was 99.8 MB in the beginning and 104.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * Witness Printer took 53.10 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 101.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant [2020-11-28 02:59:23,537 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,537 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,537 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,537 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,538 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,538 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,538 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,538 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,541 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51,QUANTIFIED] [2020-11-28 02:59:23,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_91,QUANTIFIED] [2020-11-28 02:59:23,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,544 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_91 : int :: (((8 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 < 8 && 0 <= 8 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51) && unknown-#memory_int-unknown[ad1][ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] == aux_div_ULTIMATE.start_main_~pa~0.offset_91) && i < unknown-#memory_int-unknown[ad1][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 * 8 + ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] + 1) && unknown-#memory_int-unknown[ad1][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_91_51 * 8 + ad1 + aux_div_ULTIMATE.start_main_~pa~0.offset_91 * 8] <= i) && 1 <= \result) && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && (ad1 * 7 + pa) % 8 == 0) && ad1 == 0) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1 - InvariantResult [Line: 28]: Loop Invariant [2020-11-28 02:59:23,546 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,546 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,547 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 02:59:23,547 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8 && (ad1 * 7 + pa) % 8 == 0) && ad1 == 0) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.9s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 81 SDslu, 50 SDs, 0 SdLazy, 181 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 154 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 577 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 28.9s InterpolantComputationTime, 111 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 103 ConstructedInterpolants, 11 QuantifiedInterpolants, 21963 SizeOfPredicates, 29 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/104 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...