./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 0.1.24-6b5699a [2019-11-25 08:53:10,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:10,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:10,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:10,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:10,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:10,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:10,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:10,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:10,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:10,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:10,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:10,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:10,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:10,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:10,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:10,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:10,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:10,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:10,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:10,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:10,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:10,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:10,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:10,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:10,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:10,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:10,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:10,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:10,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:10,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:10,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:10,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:10,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:10,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:10,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:10,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:10,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:10,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:10,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:10,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:10,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:10,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:10,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:10,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:10,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:10,684 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:10,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:10,684 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:10,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:10,685 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:10,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:10,686 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:10,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:10,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:10,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:10,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:10,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:10,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:10,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:10,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:10,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:10,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:10,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:10,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:10,688 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_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 [2019-11-25 08:53:10,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:10,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:10,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:10,885 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:10,886 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:10,887 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-25 08:53:10,952 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/data/a603ed701/999cbc03bd0b4905a3fdfe136f321a8d/FLAGb4a3a8b62 [2019-11-25 08:53:11,415 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:11,416 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-11-25 08:53:11,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/data/a603ed701/999cbc03bd0b4905a3fdfe136f321a8d/FLAGb4a3a8b62 [2019-11-25 08:53:11,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/data/a603ed701/999cbc03bd0b4905a3fdfe136f321a8d [2019-11-25 08:53:11,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:11,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:11,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:11,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:11,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:11,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:11" (1/1) ... [2019-11-25 08:53:11,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8a3eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:11, skipping insertion in model container [2019-11-25 08:53:11,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:11" (1/1) ... [2019-11-25 08:53:11,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:11,861 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:12,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:12,172 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:12,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:12,277 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:12,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12 WrapperNode [2019-11-25 08:53:12,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:12,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:12,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:12,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:12,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:12,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:12,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:12,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:12,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... [2019-11-25 08:53:12,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:12,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:12,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:12,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:12,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 [2019-11-25 08:53:12,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:53:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-25 08:53:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:53:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:53:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:12,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:53:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:53:13,340 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:13,341 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:53:13,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:13 BoogieIcfgContainer [2019-11-25 08:53:13,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:13,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:13,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:13,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:13,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:11" (1/3) ... [2019-11-25 08:53:13,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbefe64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:13, skipping insertion in model container [2019-11-25 08:53:13,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:12" (2/3) ... [2019-11-25 08:53:13,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbefe64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:13, skipping insertion in model container [2019-11-25 08:53:13,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:13" (3/3) ... [2019-11-25 08:53:13,350 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-11-25 08:53:13,363 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:13,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:13,385 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:13,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:13,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:13,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:13,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:13,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:13,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:13,415 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:13,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:53:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:53:13,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:13,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:13,448 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2019-11-25 08:53:13,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:13,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896554910] [2019-11-25 08:53:13,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:13,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896554910] [2019-11-25 08:53:13,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:13,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:53:13,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793442455] [2019-11-25 08:53:13,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:53:13,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:13,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:53:13,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:13,920 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-25 08:53:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:14,005 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-25 08:53:14,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:14,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-25 08:53:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:14,016 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:53:14,017 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:53:14,019 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 [2019-11-25 08:53:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:53:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2019-11-25 08:53:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:53:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-25 08:53:14,052 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-11-25 08:53:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:14,052 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-25 08:53:14,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:53:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-25 08:53:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:53:14,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:14,054 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:14,054 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:14,054 INFO L82 PathProgramCache]: Analyzing trace with hash -314667186, now seen corresponding path program 1 times [2019-11-25 08:53:14,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:14,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675020293] [2019-11-25 08:53:14,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:14,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675020293] [2019-11-25 08:53:14,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398037102] [2019-11-25 08:53:14,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 [2019-11-25 08:53:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:14,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:53:14,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:14,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:14,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-25 08:53:14,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467443512] [2019-11-25 08:53:14,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:14,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:14,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:14,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:14,685 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2019-11-25 08:53:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:14,873 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-25 08:53:14,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:53:14,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-25 08:53:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:14,876 INFO L225 Difference]: With dead ends: 25 [2019-11-25 08:53:14,876 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:53:14,877 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 [2019-11-25 08:53:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:53:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-25 08:53:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:53:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-25 08:53:14,886 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2019-11-25 08:53:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:14,888 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-25 08:53:14,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-25 08:53:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:53:14,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:14,890 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:15,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:15,092 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 2 times [2019-11-25 08:53:15,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:15,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328031109] [2019-11-25 08:53:15,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:15,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328031109] [2019-11-25 08:53:15,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658731770] [2019-11-25 08:53:15,346 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 [2019-11-25 08:53:15,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:53:15,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:15,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:53:15,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:15,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:15,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-25 08:53:15,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756573484] [2019-11-25 08:53:15,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:53:15,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:15,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:53:15,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:53:15,596 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2019-11-25 08:53:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:15,829 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-25 08:53:15,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:53:15,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-25 08:53:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:15,831 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:53:15,831 INFO L226 Difference]: Without dead ends: 27 [2019-11-25 08:53:15,832 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 [2019-11-25 08:53:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-25 08:53:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-11-25 08:53:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:53:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-25 08:53:15,836 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2019-11-25 08:53:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:15,837 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-25 08:53:15,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:53:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-25 08:53:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:53:15,838 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:15,838 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:16,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:16,048 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash -590838866, now seen corresponding path program 3 times [2019-11-25 08:53:16,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:16,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574009223] [2019-11-25 08:53:16,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:16,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574009223] [2019-11-25 08:53:16,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013372584] [2019-11-25 08:53:16,261 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/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 [2019-11-25 08:53:16,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:53:16,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:16,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-25 08:53:16,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:16,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:16,693 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-25 08:53:16,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:16,713 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:16,713 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 [2019-11-25 08:53:16,714 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:16,737 INFO L567 ElimStorePlain]: treesize reduction 5, result has 78.3 percent of original size [2019-11-25 08:53:16,738 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:16,738 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:18 [2019-11-25 08:53:16,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:53:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:53:16,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:16,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-11-25 08:53:16,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924711349] [2019-11-25 08:53:16,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:53:16,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:53:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:53:16,826 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 13 states. [2019-11-25 08:53:17,456 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2019-11-25 08:53:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:17,751 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-11-25 08:53:17,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:53:17,752 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-25 08:53:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:17,752 INFO L225 Difference]: With dead ends: 35 [2019-11-25 08:53:17,753 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:53:17,753 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:53:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:53:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:53:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:53:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:53:17,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-25 08:53:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:17,755 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:53:17,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:53:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:53:17,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:53:17,955 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:17,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:53:18,112 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-11-25 08:53:18,115 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:53:18,115 INFO L444 ceAbstractionStarter]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-11-25 08:53:18,115 INFO L444 ceAbstractionStarter]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-11-25 08:53:18,115 INFO L444 ceAbstractionStarter]: For program point L219(line 219) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:53:18,116 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-11-25 08:53:18,117 INFO L440 ceAbstractionStarter]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse0 (= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) (.cse1 (= 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 (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0)) (and (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 .cse1 (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)) (let ((.cse3 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse2 (mod (+ ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse2 42) (< .cse3 42) .cse0 (not (= (* .cse3 12) 492)) (not (= 492 (* .cse2 12))) .cse1)))) [2019-11-25 08:53:18,117 INFO L447 ceAbstractionStarter]: At program point L231(lines 131 235) the Hoare annotation is: true [2019-11-25 08:53:18,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,128 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,128 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,134 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,134 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:18 BoogieIcfgContainer [2019-11-25 08:53:18,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:18,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:18,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:18,138 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:18,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:13" (3/4) ... [2019-11-25 08:53:18,142 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:53:18,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-25 08:53:18,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:53:18,162 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:53:18,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:53:18,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:53:18,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a258fec0-bcda-4c4b-a22a-c4c7a1a78dc6/bin/uautomizer/witness.graphml [2019-11-25 08:53:18,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:18,387 INFO L168 Benchmark]: Toolchain (without parser) took 6582.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 917.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,387 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:18,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.08 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,389 INFO L168 Benchmark]: Boogie Preprocessor took 53.07 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,389 INFO L168 Benchmark]: RCFGBuilder took 931.94 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: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,390 INFO L168 Benchmark]: TraceAbstraction took 4794.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.2 MB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,390 INFO L168 Benchmark]: Witness Printer took 248.10 ms. Allocated memory is still 1.2 GB. Free memory was 990.2 MB in the beginning and 917.4 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:18,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 471.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.08 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.07 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 931.94 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: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4794.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.2 MB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. * Witness Printer took 248.10 ms. Allocated memory is still 1.2 GB. Free memory was 990.2 MB in the beginning and 917.4 MB in the end (delta: 72.8 MB). Peak memory consumption was 72.8 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 [2019-11-25 08:53:18,399 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,399 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,400 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:53:18,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((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)) || ((((((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42 && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && 0 == Id_MCDC_89__Id_MCDC_95) && !((Id_MCDC_93 + 4294967295) % 4294967296 * 12 == 492)) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.4s, 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, 1.3s 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...