./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c08ad01fb17039d4f6c07f5a5bde8b7195d83520 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:46:41,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:46:41,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:46:41,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:46:41,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:46:41,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:46:41,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:46:41,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:46:41,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:46:41,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:46:41,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:46:41,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:46:41,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:46:41,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:46:41,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:46:41,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:46:41,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:46:41,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:46:41,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:46:41,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:46:41,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:46:41,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:46:42,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:46:42,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:46:42,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:46:42,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:46:42,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:46:42,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:46:42,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:46:42,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:46:42,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:46:42,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:46:42,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:46:42,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:46:42,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:46:42,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:46:42,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:46:42,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:46:42,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:46:42,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:46:42,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:46:42,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:46:42,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:46:42,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:46:42,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:46:42,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:46:42,028 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:46:42,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:46:42,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:46:42,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:46:42,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:46:42,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:46:42,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:46:42,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:46:42,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:46:42,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:46:42,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:46:42,030 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:46:42,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:46:42,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:46:42,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:46:42,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:46:42,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:46:42,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:46:42,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:46:42,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:46:42,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:46:42,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:46:42,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:46:42,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:46:42,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9e01579f-b0ad-4816-a574-63164622fbde/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(__VERIFIER_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 -> c08ad01fb17039d4f6c07f5a5bde8b7195d83520 [2019-11-19 23:46:42,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:46:42,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:46:42,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:46:42,251 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:46:42,251 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:46:42,252 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-19 23:46:42,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/data/f8034ecb7/7b522430927f4907b277efd26d784368/FLAGc595dae54 [2019-11-19 23:46:42,737 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:46:42,738 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-19 23:46:42,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/data/f8034ecb7/7b522430927f4907b277efd26d784368/FLAGc595dae54 [2019-11-19 23:46:43,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/data/f8034ecb7/7b522430927f4907b277efd26d784368 [2019-11-19 23:46:43,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:46:43,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:46:43,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:46:43,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:46:43,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:46:43,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dbc526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43, skipping insertion in model container [2019-11-19 23:46:43,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:46:43,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:46:43,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:46:43,596 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:46:43,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:46:43,716 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:46:43,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43 WrapperNode [2019-11-19 23:46:43,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:46:43,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:46:43,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:46:43,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:46:43,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:46:43,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:46:43,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:46:43,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:46:43,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... [2019-11-19 23:46:43,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:46:43,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:46:43,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:46:43,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:46:43,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/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 [2019-11-19 23:46:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 23:46:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-19 23:46:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-19 23:46:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:46:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:46:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:46:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:46:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:46:44,690 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:46:44,691 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 23:46:44,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:46:44 BoogieIcfgContainer [2019-11-19 23:46:44,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:46:44,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:46:44,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:46:44,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:46:44,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:46:43" (1/3) ... [2019-11-19 23:46:44,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f632db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:46:44, skipping insertion in model container [2019-11-19 23:46:44,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:46:43" (2/3) ... [2019-11-19 23:46:44,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f632db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:46:44, skipping insertion in model container [2019-11-19 23:46:44,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:46:44" (3/3) ... [2019-11-19 23:46:44,704 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-11-19 23:46:44,715 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:46:44,723 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 23:46:44,735 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 23:46:44,766 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:46:44,766 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:46:44,767 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:46:44,767 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:46:44,767 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:46:44,767 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:46:44,768 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:46:44,768 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:46:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-19 23:46:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 23:46:44,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:46:44,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:46:44,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:46:44,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:46:44,805 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2019-11-19 23:46:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:46:44,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679240615] [2019-11-19 23:46:44,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:46:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:46:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:45,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679240615] [2019-11-19 23:46:45,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:46:45,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:46:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996276062] [2019-11-19 23:46:45,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 23:46:45,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:46:45,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 23:46:45,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 23:46:45,258 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-19 23:46:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:46:45,360 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-19 23:46:45,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 23:46:45,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-19 23:46:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:46:45,380 INFO L225 Difference]: With dead ends: 32 [2019-11-19 23:46:45,380 INFO L226 Difference]: Without dead ends: 17 [2019-11-19 23:46:45,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:46:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-19 23:46:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-11-19 23:46:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-19 23:46:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-19 23:46:45,418 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-11-19 23:46:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:46:45,418 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-19 23:46:45,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 23:46:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-19 23:46:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 23:46:45,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:46:45,420 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:46:45,420 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:46:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:46:45,421 INFO L82 PathProgramCache]: Analyzing trace with hash -314667186, now seen corresponding path program 1 times [2019-11-19 23:46:45,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:46:45,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341471622] [2019-11-19 23:46:45,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:46:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:46:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:45,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341471622] [2019-11-19 23:46:45,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068138486] [2019-11-19 23:46:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/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 [2019-11-19 23:46:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:46:45,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:46:45,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:46:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:45,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:46:45,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-19 23:46:45,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508862145] [2019-11-19 23:46:45,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:46:45,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:46:45,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:46:45,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:46:45,940 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2019-11-19 23:46:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:46:46,095 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-19 23:46:46,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 23:46:46,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-19 23:46:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:46:46,097 INFO L225 Difference]: With dead ends: 25 [2019-11-19 23:46:46,097 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 23:46:46,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:46:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 23:46:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-19 23:46:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-19 23:46:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-19 23:46:46,103 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2019-11-19 23:46:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:46:46,104 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-19 23:46:46,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:46:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-19 23:46:46,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 23:46:46,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:46:46,105 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 23:46:46,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:46:46,315 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:46:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:46:46,316 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 2 times [2019-11-19 23:46:46,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:46:46,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094163561] [2019-11-19 23:46:46,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:46:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:46:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:46,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094163561] [2019-11-19 23:46:46,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672264563] [2019-11-19 23:46:46,580 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/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 [2019-11-19 23:46:46,806 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 23:46:46,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:46:46,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 23:46:46,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:46:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:46,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:46:46,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-19 23:46:46,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756853512] [2019-11-19 23:46:46,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 23:46:46,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:46:46,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 23:46:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:46:46,858 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2019-11-19 23:46:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:46:47,111 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-19 23:46:47,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:46:47,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-19 23:46:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:46:47,114 INFO L225 Difference]: With dead ends: 30 [2019-11-19 23:46:47,114 INFO L226 Difference]: Without dead ends: 27 [2019-11-19 23:46:47,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:46:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-19 23:46:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-19 23:46:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 23:46:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-19 23:46:47,120 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2019-11-19 23:46:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:46:47,120 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-19 23:46:47,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 23:46:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-19 23:46:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 23:46:47,121 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:46:47,121 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-19 23:46:47,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:46:47,327 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:46:47,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:46:47,328 INFO L82 PathProgramCache]: Analyzing trace with hash -590838866, now seen corresponding path program 3 times [2019-11-19 23:46:47,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:46:47,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158506484] [2019-11-19 23:46:47,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:46:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:46:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:46:47,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158506484] [2019-11-19 23:46:47,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638201006] [2019-11-19 23:46:47,553 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/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 [2019-11-19 23:46:47,888 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-19 23:46:47,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 23:46:47,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-19 23:46:47,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:46:47,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:46:48,013 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-19 23:46:48,014 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:46:48,035 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:46:48,036 INFO L377 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 29 treesize of output 29 [2019-11-19 23:46:48,037 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 23:46:48,056 INFO L567 ElimStorePlain]: treesize reduction 5, result has 78.3 percent of original size [2019-11-19 23:46:48,057 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:46:48,057 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:18 [2019-11-19 23:46:48,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:46:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 23:46:48,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:46:48,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-11-19 23:46:48,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688389036] [2019-11-19 23:46:48,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 23:46:48,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:46:48,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 23:46:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-19 23:46:48,156 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2019-11-19 23:46:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:46:48,996 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-11-19 23:46:48,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 23:46:48,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-19 23:46:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:46:48,997 INFO L225 Difference]: With dead ends: 35 [2019-11-19 23:46:48,997 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 23:46:48,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-11-19 23:46:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 23:46:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 23:46:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 23:46:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 23:46:48,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-19 23:46:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:46:48,999 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:46:48,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 23:46:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:46:49,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 23:46:49,204 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:46:49,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 23:46:49,399 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-11-19 23:46:49,404 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-11-19 23:46:49,405 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-19 23:46:49,406 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 23:46:49,406 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 23:46:49,406 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-11-19 23:46:49,406 INFO L440 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse2 (= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) (.cse3 (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (let ((.cse1 (mod (+ ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296)) (.cse0 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (not (= (* 12 .cse0) 492)) (< .cse1 42) (not (= 492 (* 12 .cse1))) (< .cse0 42) .cse2 .cse3)) (and .cse2 (= ~Id_MCDC_93~0 0) .cse3 (= 0 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0)) (and (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)))) [2019-11-19 23:46:49,407 INFO L447 ceAbstractionStarter]: At program point L231(lines 131 235) the Hoare annotation is: true [2019-11-19 23:46:49,429 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,430 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,430 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:46:49 BoogieIcfgContainer [2019-11-19 23:46:49,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:46:49,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:46:49,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:46:49,441 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:46:49,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:46:44" (3/4) ... [2019-11-19 23:46:49,445 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 23:46:49,462 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-19 23:46:49,464 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-19 23:46:49,465 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-19 23:46:49,466 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-19 23:46:49,698 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9e01579f-b0ad-4816-a574-63164622fbde/bin/uautomizer/witness.graphml [2019-11-19 23:46:49,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:46:49,700 INFO L168 Benchmark]: Toolchain (without parser) took 6609.48 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 261.1 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -97.7 MB). Peak memory consumption was 163.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,700 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:46:49,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,701 INFO L168 Benchmark]: Boogie Preprocessor took 70.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,702 INFO L168 Benchmark]: RCFGBuilder took 825.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,702 INFO L168 Benchmark]: TraceAbstraction took 4747.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.1 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,703 INFO L168 Benchmark]: Witness Printer took 257.29 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:46:49,705 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 625.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -235.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 825.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4747.42 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.1 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. * Witness Printer took 257.29 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. * 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 165]: Loop Invariant [2019-11-19 23:46:49,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-19 23:46:49,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((!(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && !(492 == 12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296))) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && 0 == Id_MCDC_89__Id_MCDC_95) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) || (((0 == Id_MCDC_89__Id_MCDC_95 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 == Id_MCDC_89__Id_MCDC_95) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 31 SDtfs, 104 SDslu, 58 SDs, 0 SdLazy, 221 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 97 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 116 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 12413 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1151 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...