./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i --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_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/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 e6b2fc0ac86288bcd9915ed640c1db16cb194d14 ......................................................................................................................................................................................................................................................................... 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 03:21:05,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:05,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:05,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:05,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:05,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:05,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:05,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:05,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:05,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:05,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:05,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:05,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:05,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:05,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:05,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:05,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:05,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:05,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:05,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:05,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:05,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:05,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:05,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:05,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:05,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:05,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:05,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:05,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:05,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:05,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:05,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:05,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:05,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:05,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:05,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:05,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:05,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:05,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:05,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:05,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:05,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:21:05,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:05,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:05,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:05,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:05,579 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:05,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:05,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:05,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:05,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:05,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:05,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:05,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:05,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:05,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:05,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:05,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:05,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:05,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:05,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:05,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:05,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:05,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:05,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:05,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:05,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:05,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:05,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:05,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:05,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:05,585 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_42120f8f-26ba-47c9-a23f-42fdb8c40f17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6b2fc0ac86288bcd9915ed640c1db16cb194d14 [2020-11-28 03:21:05,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:05,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:05,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:05,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:05,852 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:05,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2020-11-28 03:21:05,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/data/cc5aa41a3/26f70055f51e48faa900ef06f2420f75/FLAG51e16c9a0 [2020-11-28 03:21:06,345 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:06,345 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2020-11-28 03:21:06,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/data/cc5aa41a3/26f70055f51e48faa900ef06f2420f75/FLAG51e16c9a0 [2020-11-28 03:21:06,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/data/cc5aa41a3/26f70055f51e48faa900ef06f2420f75 [2020-11-28 03:21:06,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:06,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:06,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:06,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:06,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:06,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:06,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef0df68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06, skipping insertion in model container [2020-11-28 03:21:06,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:06,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:06,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:06,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:06,960 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:06,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:06,984 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:06,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06 WrapperNode [2020-11-28 03:21:06,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:06,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:06,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:06,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:06,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:07,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:07,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:07,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:07,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... [2020-11-28 03:21:07,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:07,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:07,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:07,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:07,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/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 03:21:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:21:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:21:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:21:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:21:07,341 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:07,341 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:21:07,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:07 BoogieIcfgContainer [2020-11-28 03:21:07,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:07,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:07,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:07,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:07,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:06" (1/3) ... [2020-11-28 03:21:07,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3188ae0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:07, skipping insertion in model container [2020-11-28 03:21:07,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:06" (2/3) ... [2020-11-28 03:21:07,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3188ae0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:07, skipping insertion in model container [2020-11-28 03:21:07,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:07" (3/3) ... [2020-11-28 03:21:07,355 INFO L111 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2020-11-28 03:21:07,366 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:07,394 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:21:07,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:21:07,435 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:07,435 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:07,435 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:07,435 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:07,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:07,436 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:07,436 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:07,436 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 03:21:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:21:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:07,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:21:07,467 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:07,487 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-11-28 03:21:07,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:07,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602435607] [2020-11-28 03:21:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:07,656 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 03:21:07,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602435607] [2020-11-28 03:21:07,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:07,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:21:07,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870487774] [2020-11-28 03:21:07,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:07,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:07,677 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-28 03:21:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:07,705 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-28 03:21:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:07,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:21:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:07,713 INFO L225 Difference]: With dead ends: 14 [2020-11-28 03:21:07,713 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:21:07,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:21:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:21:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:21:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:21:07,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-11-28 03:21:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:07,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:21:07,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:21:07,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:21:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:07,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:21:07,774 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:21:07,774 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:21:07,775 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:21:07,775 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:21:07,775 INFO L277 CegarLoopResult]: At program point L27(lines 18 28) the Hoare annotation is: true [2020-11-28 03:21:07,775 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 03:21:07,775 INFO L274 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-11-28 03:21:07,776 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:21:07,776 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2020-11-28 03:21:07,776 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:21:07,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:07 BoogieIcfgContainer [2020-11-28 03:21:07,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:07,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:07,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:07,789 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:07,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:07" (3/4) ... [2020-11-28 03:21:07,793 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:21:07,816 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:21:07,817 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:21:07,817 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:21:07,817 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:21:07,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42120f8f-26ba-47c9-a23f-42fdb8c40f17/bin/uautomizer/witness.graphml [2020-11-28 03:21:07,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:07,879 INFO L168 Benchmark]: Toolchain (without parser) took 1105.42 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 79.1 MB in the beginning and 68.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,879 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:07,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 78.8 MB in the beginning and 103.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.37 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 101.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:07,881 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 101.0 MB in the end (delta: 875.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,882 INFO L168 Benchmark]: RCFGBuilder took 303.36 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,882 INFO L168 Benchmark]: TraceAbstraction took 443.06 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 71.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,883 INFO L168 Benchmark]: Witness Printer took 88.08 ms. Allocated memory is still 125.8 MB. Free memory was 71.3 MB in the beginning and 68.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:07,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 209.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 78.8 MB in the beginning and 103.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.37 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 101.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 101.0 MB in the end (delta: 875.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 303.36 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 443.06 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 71.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 88.08 ms. Allocated memory is still 125.8 MB. Free memory was 71.3 MB in the beginning and 68.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...