./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 8fd23352dd8ab85cd861f1c1ff83b687f6651dee ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 8fd23352dd8ab85cd861f1c1ff83b687f6651dee ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |#memory_int| input size 127 context size 127 output size 127 --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:05:44,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:05:44,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:05:44,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:05:44,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:05:44,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:05:44,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:05:44,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:05:44,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:05:44,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:05:44,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:05:44,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:05:44,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:05:44,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:05:44,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:05:44,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:05:44,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:05:44,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:05:44,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:05:44,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:05:44,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:05:44,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:05:44,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:05:44,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:05:44,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:05:44,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:05:44,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:05:44,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:05:44,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:05:44,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:05:44,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:05:44,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:05:44,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:05:44,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:05:44,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:05:44,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:05:44,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:05:44,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:05:44,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:05:44,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:05:44,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:05:44,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:05:44,229 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:05:44,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:05:44,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:05:44,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:05:44,231 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:05:44,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:05:44,231 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:05:44,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:05:44,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:05:44,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:05:44,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:05:44,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:05:44,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:05:44,232 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:05:44,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:05:44,233 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:05:44,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:05:44,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:05:44,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:05:44,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:05:44,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:05:44,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:05:44,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:05:44,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:05:44,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:05:44,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:05:44,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:05:44,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:05:44,235 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_699ccff4-350b-494a-ab6a-afa00f4077be/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 -> 8fd23352dd8ab85cd861f1c1ff83b687f6651dee [2019-11-20 05:05:44,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:05:44,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:05:44,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:05:44,427 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:05:44,427 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:05:44,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/../../sv-benchmarks/c/array-fpi/sina4.c [2019-11-20 05:05:44,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/635abea94/88487dc1cf2f4751a74ed8962e482167/FLAGad5562b85 [2019-11-20 05:05:44,868 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:05:44,869 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/sv-benchmarks/c/array-fpi/sina4.c [2019-11-20 05:05:44,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/635abea94/88487dc1cf2f4751a74ed8962e482167/FLAGad5562b85 [2019-11-20 05:05:45,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/635abea94/88487dc1cf2f4751a74ed8962e482167 [2019-11-20 05:05:45,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:05:45,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:05:45,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:05:45,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:05:45,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:05:45,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44224560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45, skipping insertion in model container [2019-11-20 05:05:45,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,330 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:05:45,345 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:05:45,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:05:45,612 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:05:45,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:05:45,660 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:05:45,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45 WrapperNode [2019-11-20 05:05:45,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:05:45,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:05:45,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:05:45,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:05:45,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:05:45,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:05:45,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:05:45,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:05:45,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... [2019-11-20 05:05:45,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:05:45,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:05:45,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:05:45,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:05:45,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 [2019-11-20 05:05:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:05:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:05:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:05:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:05:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:05:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:05:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:05:46,029 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:05:46,030 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-20 05:05:46,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:05:46 BoogieIcfgContainer [2019-11-20 05:05:46,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:05:46,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:05:46,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:05:46,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:05:46,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:05:45" (1/3) ... [2019-11-20 05:05:46,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4737b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:05:46, skipping insertion in model container [2019-11-20 05:05:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:45" (2/3) ... [2019-11-20 05:05:46,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4737b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:05:46, skipping insertion in model container [2019-11-20 05:05:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:05:46" (3/3) ... [2019-11-20 05:05:46,038 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4.c [2019-11-20 05:05:46,046 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:05:46,052 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:05:46,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:05:46,083 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:05:46,083 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:05:46,083 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:05:46,084 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:05:46,084 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:05:46,084 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:05:46,084 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:05:46,084 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:05:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-20 05:05:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:05:46,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:46,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:46,108 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1543917039, now seen corresponding path program 1 times [2019-11-20 05:05:46,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:46,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710778151] [2019-11-20 05:05:46,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:46,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710778151] [2019-11-20 05:05:46,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:05:46,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:05:46,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980155062] [2019-11-20 05:05:46,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 05:05:46,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:05:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:05:46,287 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-20 05:05:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:46,304 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-11-20 05:05:46,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:05:46,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-20 05:05:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:46,314 INFO L225 Difference]: With dead ends: 45 [2019-11-20 05:05:46,314 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 05:05:46,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:05:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 05:05:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 05:05:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 05:05:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-20 05:05:46,344 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-11-20 05:05:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:46,345 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-20 05:05:46,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 05:05:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-20 05:05:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:05:46,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:46,346 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:46,346 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:46,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:46,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1392318587, now seen corresponding path program 1 times [2019-11-20 05:05:46,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:46,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500704669] [2019-11-20 05:05:46,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:46,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500704669] [2019-11-20 05:05:46,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:05:46,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:05:46,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418864094] [2019-11-20 05:05:46,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:05:46,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:46,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:05:46,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:05:46,422 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-11-20 05:05:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:46,499 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-11-20 05:05:46,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:05:46,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-20 05:05:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:46,501 INFO L225 Difference]: With dead ends: 39 [2019-11-20 05:05:46,501 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 05:05:46,502 INFO L630 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 [2019-11-20 05:05:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 05:05:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-20 05:05:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 05:05:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-20 05:05:46,507 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-11-20 05:05:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:46,507 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-20 05:05:46,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:05:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-20 05:05:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 05:05:46,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:46,508 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:46,509 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash -298812061, now seen corresponding path program 1 times [2019-11-20 05:05:46,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:46,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788720814] [2019-11-20 05:05:46,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 05:05:46,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788720814] [2019-11-20 05:05:46,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:05:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:05:46,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582511414] [2019-11-20 05:05:46,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:05:46,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:05:46,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:05:46,587 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-11-20 05:05:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:46,670 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-11-20 05:05:46,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:05:46,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-20 05:05:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:46,672 INFO L225 Difference]: With dead ends: 48 [2019-11-20 05:05:46,673 INFO L226 Difference]: Without dead ends: 35 [2019-11-20 05:05:46,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:05:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-20 05:05:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-11-20 05:05:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 05:05:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-20 05:05:46,678 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2019-11-20 05:05:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:46,679 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-20 05:05:46,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:05:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-20 05:05:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:05:46,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:46,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:46,680 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:46,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:46,680 INFO L82 PathProgramCache]: Analyzing trace with hash -312639363, now seen corresponding path program 1 times [2019-11-20 05:05:46,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:46,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232858157] [2019-11-20 05:05:46,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:47,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232858157] [2019-11-20 05:05:47,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745325981] [2019-11-20 05:05:47,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 [2019-11-20 05:05:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:47,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 05:05:47,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:47,934 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 05:05:47,935 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:47,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:47,958 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:05:47,958 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:47,969 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:47,969 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:47,970 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 05:05:48,017 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-11-20 05:05:48,018 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,031 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:48,032 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,032 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-20 05:05:48,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2019-11-20 05:05:48,212 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,224 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:48,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,225 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:29 [2019-11-20 05:05:48,341 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2019-11-20 05:05:48,342 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,354 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:48,355 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:05:48,355 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:31 [2019-11-20 05:05:48,548 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:48,548 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 84 [2019-11-20 05:05:48,550 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:48,614 INFO L567 ElimStorePlain]: treesize reduction 40, result has 60.0 percent of original size [2019-11-20 05:05:48,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,620 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-20 05:05:48,621 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:48, output treesize:60 [2019-11-20 05:05:48,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:05:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:48,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:05:48,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2019-11-20 05:05:48,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182855120] [2019-11-20 05:05:48,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 05:05:48,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:48,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 05:05:48,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2019-11-20 05:05:48,950 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 26 states. [2019-11-20 05:05:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:50,025 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-11-20 05:05:50,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 05:05:50,025 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 22 [2019-11-20 05:05:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:50,026 INFO L225 Difference]: With dead ends: 55 [2019-11-20 05:05:50,026 INFO L226 Difference]: Without dead ends: 53 [2019-11-20 05:05:50,027 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2019-11-20 05:05:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-20 05:05:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-11-20 05:05:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 05:05:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-11-20 05:05:50,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 22 [2019-11-20 05:05:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:50,044 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-11-20 05:05:50,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 05:05:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-11-20 05:05:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:05:50,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:50,046 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:50,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:05:50,257 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:50,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1846667163, now seen corresponding path program 2 times [2019-11-20 05:05:50,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:50,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226251106] [2019-11-20 05:05:50,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:05:50,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226251106] [2019-11-20 05:05:50,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429854124] [2019-11-20 05:05:50,312 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 [2019-11-20 05:05:50,362 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 05:05:50,362 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:05:50,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:05:50,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:05:50,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:05:50,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-20 05:05:50,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544511185] [2019-11-20 05:05:50,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:05:50,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:50,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:05:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:05:50,409 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 10 states. [2019-11-20 05:05:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:50,556 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2019-11-20 05:05:50,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 05:05:50,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-11-20 05:05:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:50,558 INFO L225 Difference]: With dead ends: 99 [2019-11-20 05:05:50,558 INFO L226 Difference]: Without dead ends: 64 [2019-11-20 05:05:50,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-20 05:05:50,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-20 05:05:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2019-11-20 05:05:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-20 05:05:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-11-20 05:05:50,571 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 24 [2019-11-20 05:05:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:50,572 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-11-20 05:05:50,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:05:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-11-20 05:05:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:05:50,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:50,573 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:50,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:05:50,776 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash 427710555, now seen corresponding path program 3 times [2019-11-20 05:05:50,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:50,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381458020] [2019-11-20 05:05:50,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:05:50,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381458020] [2019-11-20 05:05:50,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399905948] [2019-11-20 05:05:50,853 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 [2019-11-20 05:05:50,894 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 05:05:50,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:05:50,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:05:50,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:05:50,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:05:50,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-20 05:05:50,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392417404] [2019-11-20 05:05:50,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:05:50,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:05:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:05:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:05:50,954 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 10 states. [2019-11-20 05:05:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:51,108 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-20 05:05:51,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:05:51,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-11-20 05:05:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:51,110 INFO L225 Difference]: With dead ends: 61 [2019-11-20 05:05:51,110 INFO L226 Difference]: Without dead ends: 48 [2019-11-20 05:05:51,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2019-11-20 05:05:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-20 05:05:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2019-11-20 05:05:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 05:05:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-20 05:05:51,117 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2019-11-20 05:05:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:51,117 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-20 05:05:51,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:05:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-20 05:05:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 05:05:51,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:51,118 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:51,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:05:51,319 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1584070283, now seen corresponding path program 4 times [2019-11-20 05:05:51,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:05:51,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640195361] [2019-11-20 05:05:51,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:05:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:53,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640195361] [2019-11-20 05:05:53,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314652961] [2019-11-20 05:05:53,128 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:05:53,176 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 05:05:53,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 05:05:53,178 WARN L253 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-20 05:05:53,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:53,191 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 05:05:53,191 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,205 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:53,210 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:05:53,210 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,222 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:53,222 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,223 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:24 [2019-11-20 05:05:53,282 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-11-20 05:05:53,282 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,302 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:53,302 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,302 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-11-20 05:05:53,408 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:05:53,413 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-11-20 05:05:53,414 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,432 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:53,432 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:53,432 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2019-11-20 05:05:53,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:05:53,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 05:05:53,744 INFO L168 Benchmark]: Toolchain (without parser) took 8431.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -135.1 MB). Peak memory consumption was 77.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:05:53,745 INFO L168 Benchmark]: CDTParser took 0.28 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. [2019-11-20 05:05:53,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -227.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:05:53,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:05:53,748 INFO L168 Benchmark]: Boogie Preprocessor took 25.10 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. [2019-11-20 05:05:53,749 INFO L168 Benchmark]: RCFGBuilder took 287.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:05:53,749 INFO L168 Benchmark]: TraceAbstraction took 7711.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:05:53,752 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 347.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -227.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.10 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. * RCFGBuilder took 287.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7711.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 34.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:05:55,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:05:55,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:05:55,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:05:55,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:05:55,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:05:55,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:05:55,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:05:55,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:05:55,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:05:55,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:05:55,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:05:55,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:05:55,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:05:55,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:05:55,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:05:55,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:05:55,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:05:55,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:05:55,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:05:55,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:05:55,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:05:55,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:05:55,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:05:55,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:05:55,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:05:55,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:05:55,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:05:55,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:05:55,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:05:55,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:05:55,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:05:55,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:05:55,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:05:55,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:05:55,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:05:55,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:05:55,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:05:55,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:05:55,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:05:55,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:05:55,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 05:05:55,631 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:05:55,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:05:55,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:05:55,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:05:55,637 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:05:55,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:05:55,637 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:05:55,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:05:55,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:05:55,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:05:55,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:05:55,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:05:55,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:05:55,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:05:55,639 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:05:55,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:05:55,640 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:05:55,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:05:55,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:05:55,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:05:55,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:05:55,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:05:55,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:05:55,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:05:55,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:05:55,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:05:55,647 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:05:55,647 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:05:55,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:05:55,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:05:55,648 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_699ccff4-350b-494a-ab6a-afa00f4077be/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 -> 8fd23352dd8ab85cd861f1c1ff83b687f6651dee [2019-11-20 05:05:55,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:05:55,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:05:55,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:05:55,950 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:05:55,950 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:05:55,951 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/../../sv-benchmarks/c/array-fpi/sina4.c [2019-11-20 05:05:56,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/4bdcf48e7/e56c7bcee5ca47dbb15fa168af4614e2/FLAG200c15b44 [2019-11-20 05:05:56,348 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:05:56,349 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/sv-benchmarks/c/array-fpi/sina4.c [2019-11-20 05:05:56,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/4bdcf48e7/e56c7bcee5ca47dbb15fa168af4614e2/FLAG200c15b44 [2019-11-20 05:05:56,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/data/4bdcf48e7/e56c7bcee5ca47dbb15fa168af4614e2 [2019-11-20 05:05:56,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:05:56,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:05:56,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:05:56,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:05:56,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:05:56,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:05:56" (1/1) ... [2019-11-20 05:05:56,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7314b705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:56, skipping insertion in model container [2019-11-20 05:05:56,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:05:56" (1/1) ... [2019-11-20 05:05:56,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:05:56,774 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:05:56,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:05:57,001 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:05:57,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:05:57,062 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:05:57,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57 WrapperNode [2019-11-20 05:05:57,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:05:57,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:05:57,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:05:57,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:05:57,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:05:57,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:05:57,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:05:57,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:05:57,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... [2019-11-20 05:05:57,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:05:57,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:05:57,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:05:57,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:05:57,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/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 [2019-11-20 05:05:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:05:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-20 05:05:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:05:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:05:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:05:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-20 05:05:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:05:57,606 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:05:57,606 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-20 05:05:57,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:05:57 BoogieIcfgContainer [2019-11-20 05:05:57,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:05:57,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:05:57,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:05:57,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:05:57,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:05:56" (1/3) ... [2019-11-20 05:05:57,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72637015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:05:57, skipping insertion in model container [2019-11-20 05:05:57,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:05:57" (2/3) ... [2019-11-20 05:05:57,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72637015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:05:57, skipping insertion in model container [2019-11-20 05:05:57,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:05:57" (3/3) ... [2019-11-20 05:05:57,614 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4.c [2019-11-20 05:05:57,623 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:05:57,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:05:57,639 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:05:57,661 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:05:57,661 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:05:57,662 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:05:57,662 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:05:57,662 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:05:57,662 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:05:57,662 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:05:57,662 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:05:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-20 05:05:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:05:57,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:57,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:57,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:57,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1543917039, now seen corresponding path program 1 times [2019-11-20 05:05:57,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:05:57,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1632365081] [2019-11-20 05:05:57,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:57,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 05:05:57,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:57,911 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:05:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:57,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1632365081] [2019-11-20 05:05:57,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:05:57,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:05:57,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951794971] [2019-11-20 05:05:57,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 05:05:57,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:05:57,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:05:57,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:05:57,947 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-11-20 05:05:57,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:57,967 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-11-20 05:05:57,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:05:57,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-20 05:05:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:57,982 INFO L225 Difference]: With dead ends: 45 [2019-11-20 05:05:57,982 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 05:05:57,987 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:05:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 05:05:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-20 05:05:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 05:05:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-20 05:05:58,011 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-11-20 05:05:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:58,011 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-20 05:05:58,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 05:05:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-20 05:05:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:05:58,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:58,012 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:58,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:58,213 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1392318587, now seen corresponding path program 1 times [2019-11-20 05:05:58,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:05:58,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1892182805] [2019-11-20 05:05:58,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:58,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:05:58,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:58,341 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:05:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:58,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892182805] [2019-11-20 05:05:58,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:05:58,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 05:05:58,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916652397] [2019-11-20 05:05:58,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:05:58,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:05:58,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:05:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:05:58,363 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2019-11-20 05:05:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:58,486 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-11-20 05:05:58,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:05:58,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 05:05:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:58,488 INFO L225 Difference]: With dead ends: 39 [2019-11-20 05:05:58,488 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 05:05:58,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:05:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 05:05:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-20 05:05:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 05:05:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-20 05:05:58,498 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-11-20 05:05:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:58,499 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-20 05:05:58,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:05:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-20 05:05:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 05:05:58,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:58,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:58,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:58,705 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash -298812061, now seen corresponding path program 1 times [2019-11-20 05:05:58,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:05:58,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [91356389] [2019-11-20 05:05:58,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:58,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:05:58,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:58,883 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:05:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:05:58,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91356389] [2019-11-20 05:05:58,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:05:58,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 05:05:58,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637690077] [2019-11-20 05:05:58,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 05:05:58,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:05:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 05:05:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:05:58,973 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 10 states. [2019-11-20 05:05:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:05:59,458 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2019-11-20 05:05:59,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 05:05:59,459 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-20 05:05:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:05:59,460 INFO L225 Difference]: With dead ends: 84 [2019-11-20 05:05:59,460 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 05:05:59,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2019-11-20 05:05:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 05:05:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2019-11-20 05:05:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-20 05:05:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-11-20 05:05:59,483 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 16 [2019-11-20 05:05:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:05:59,484 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-11-20 05:05:59,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 05:05:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-11-20 05:05:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:05:59,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:05:59,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:05:59,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:59,689 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:05:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:05:59,690 INFO L82 PathProgramCache]: Analyzing trace with hash -312639363, now seen corresponding path program 1 times [2019-11-20 05:05:59,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:05:59,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1772800837] [2019-11-20 05:05:59,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699ccff4-350b-494a-ab6a-afa00f4077be/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:05:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:05:59,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 05:05:59,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:05:59,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:05:59,940 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-20 05:05:59,940 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:05:59,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:05:59,960 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:05:59,961 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:27 [2019-11-20 05:06:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 05:06:00,018 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:06:02,045 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.base| (_ BitVec 32))) (not (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~#sum~0.offset| (_ bv4 32))) (.cse0 (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse1 (bvadd (concat (select .cse0 .cse2) (select .cse0 |c_ULTIMATE.start_main_~#sum~0.offset|)) (let ((.cse3 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base)) (.cse4 (bvmul c_ULTIMATE.start_main_~i~0 (_ bv8 32)))) (concat (select .cse3 (bvadd c_ULTIMATE.start_main_~a~0.offset .cse4 (_ bv4 32))) (select .cse3 (bvadd c_ULTIMATE.start_main_~a~0.offset .cse4))))))) (= (store |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse1))) (store |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base| (store .cse0 .cse2 ((_ extract 63 32) .cse1)))))))) is different from false [2019-11-20 05:06:04,065 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.base| (_ BitVec 32))) (not (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~#sum~0.offset| (_ bv4 32))) (.cse0 (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base|))) (let ((.cse1 (bvadd (concat (select .cse0 .cse2) (select .cse0 |c_ULTIMATE.start_main_~#sum~0.offset|)) (let ((.cse3 (select |c_#memory_int| c_ULTIMATE.start_main_~a~0.base))) (concat (select .cse3 (bvadd c_ULTIMATE.start_main_~a~0.offset (_ bv4 32))) (select .cse3 c_ULTIMATE.start_main_~a~0.offset)))))) (= (store |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0.offset| ((_ extract 31 0) .cse1))) (store |c_#memory_int| |ULTIMATE.start_main_~#sum~0.base| (store .cse0 .cse2 ((_ extract 63 32) .cse1)))))))) is different from false [2019-11-20 05:06:04,157 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:06:04,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:06:04,359 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |#memory_int| input size 127 context size 127 output size 127 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:351) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 05:06:04,364 INFO L168 Benchmark]: Toolchain (without parser) took 7620.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 955.1 MB in the beginning and 988.0 MB in the end (delta: -32.9 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:06:04,364 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:06:04,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.22 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 939.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:06:04,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -208.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:06:04,366 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:06:04,366 INFO L168 Benchmark]: RCFGBuilder took 411.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-20 05:06:04,367 INFO L168 Benchmark]: TraceAbstraction took 6753.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.0 MB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:06:04,370 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.22 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 939.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 101.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -208.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 411.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6753.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.0 MB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |#memory_int| input size 127 context size 127 output size 127 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |#memory_int| input size 127 context size 127 output size 127: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:351) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...