./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s4lif.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_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s4lif.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 24ab6373c463253c38e077741c124c1beeaf9236 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s4lif.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 24ab6373c463253c38e077741c124c1beeaf9236 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |#memory_int| input size 379 context size 379 output size 379 --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 09:27:24,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:27:24,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:27:24,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:27:24,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:27:24,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:27:24,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:27:24,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:27:24,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:27:24,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:27:24,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:27:24,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:27:24,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:27:24,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:27:24,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:27:24,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:27:24,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:27:24,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:27:24,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:27:24,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:27:24,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:27:24,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:27:24,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:27:24,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:27:24,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:27:24,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:27:24,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:27:24,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:27:24,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:27:24,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:27:24,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:27:24,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:27:24,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:27:24,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:27:24,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:27:24,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:27:24,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:27:24,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:27:24,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:27:24,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:27:24,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:27:24,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:27:24,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:27:24,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:27:24,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:27:24,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:27:24,232 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:27:24,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:27:24,233 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:27:24,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:27:24,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:27:24,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:27:24,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:27:24,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:27:24,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:27:24,234 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:27:24,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:27:24,235 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:27:24,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:27:24,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:27:24,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:27:24,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:27:24,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:27:24,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:27:24,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:27:24,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:27:24,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:27:24,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:27:24,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:27:24,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:27:24,238 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_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 -> 24ab6373c463253c38e077741c124c1beeaf9236 [2019-11-20 09:27:24,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:27:24,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:27:24,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:27:24,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:27:24,400 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:27:24,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s4lif.c [2019-11-20 09:27:24,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/95c69fa64/423c99cc89324594848d9f4bce37b49d/FLAG71bb0cdac [2019-11-20 09:27:24,891 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:27:24,892 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/sv-benchmarks/c/array-fpi/s4lif.c [2019-11-20 09:27:24,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/95c69fa64/423c99cc89324594848d9f4bce37b49d/FLAG71bb0cdac [2019-11-20 09:27:24,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/95c69fa64/423c99cc89324594848d9f4bce37b49d [2019-11-20 09:27:24,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:27:24,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:27:24,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:27:24,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:27:24,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:27:24,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:24" (1/1) ... [2019-11-20 09:27:24,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197e5f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24, skipping insertion in model container [2019-11-20 09:27:24,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:24" (1/1) ... [2019-11-20 09:27:24,935 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:27:24,952 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:27:25,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:27:25,266 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:27:25,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:27:25,318 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:27:25,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25 WrapperNode [2019-11-20 09:27:25,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:27:25,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:27:25,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:27:25,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:27:25,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:27:25,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:27:25,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:27:25,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:27:25,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... [2019-11-20 09:27:25,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:27:25,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:27:25,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:27:25,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:27:25,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:27:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:27:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:27:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:27:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:27:25,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:27:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:27:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:27:25,690 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:27:25,690 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 09:27:25,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:25 BoogieIcfgContainer [2019-11-20 09:27:25,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:27:25,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:27:25,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:27:25,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:27:25,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:24" (1/3) ... [2019-11-20 09:27:25,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be870b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:25, skipping insertion in model container [2019-11-20 09:27:25,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:25" (2/3) ... [2019-11-20 09:27:25,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be870b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:25, skipping insertion in model container [2019-11-20 09:27:25,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:25" (3/3) ... [2019-11-20 09:27:25,698 INFO L109 eAbstractionObserver]: Analyzing ICFG s4lif.c [2019-11-20 09:27:25,706 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:27:25,712 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:27:25,722 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:27:25,745 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:27:25,745 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:27:25,745 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:27:25,745 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:27:25,745 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:27:25,746 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:27:25,746 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:27:25,746 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:27:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 09:27:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:27:25,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:25,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:25,766 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-20 09:27:25,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:25,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996918558] [2019-11-20 09:27:25,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:25,891 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 09:27:25,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996918558] [2019-11-20 09:27:25,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:27:25,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 09:27:25,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095765388] [2019-11-20 09:27:25,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 09:27:25,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 09:27:25,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 09:27:25,909 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-20 09:27:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:25,926 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-20 09:27:25,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 09:27:25,927 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-20 09:27:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:25,936 INFO L225 Difference]: With dead ends: 35 [2019-11-20 09:27:25,936 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 09:27:25,938 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 09:27:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 09:27:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 09:27:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 09:27:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-20 09:27:25,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-20 09:27:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:25,964 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-20 09:27:25,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 09:27:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-20 09:27:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:27:25,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:25,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:25,965 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-20 09:27:25,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:25,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237515074] [2019-11-20 09:27:25,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:26,042 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 09:27:26,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237515074] [2019-11-20 09:27:26,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:27:26,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:27:26,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279021623] [2019-11-20 09:27:26,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:27:26,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:26,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:27:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:27:26,046 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 3 states. [2019-11-20 09:27:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:26,096 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-20 09:27:26,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:27:26,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-20 09:27:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:26,097 INFO L225 Difference]: With dead ends: 29 [2019-11-20 09:27:26,098 INFO L226 Difference]: Without dead ends: 18 [2019-11-20 09:27:26,099 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 09:27:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-20 09:27:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-20 09:27:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 09:27:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-20 09:27:26,103 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-20 09:27:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:26,103 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-20 09:27:26,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:27:26,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-20 09:27:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 09:27:26,104 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:26,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:26,104 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-20 09:27:26,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:26,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460791186] [2019-11-20 09:27:26,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:26,173 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 09:27:26,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460791186] [2019-11-20 09:27:26,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:27:26,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:27:26,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250252811] [2019-11-20 09:27:26,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:27:26,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:26,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:27:26,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:27:26,175 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-20 09:27:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:26,258 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-20 09:27:26,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:27:26,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 09:27:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:26,259 INFO L225 Difference]: With dead ends: 30 [2019-11-20 09:27:26,259 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 09:27:26,260 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 09:27:26,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 09:27:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2019-11-20 09:27:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 09:27:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-20 09:27:26,265 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-11-20 09:27:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:26,266 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-20 09:27:26,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:27:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-20 09:27:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 09:27:26,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:26,267 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:26,267 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-20 09:27:26,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:26,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980373927] [2019-11-20 09:27:26,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:27,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980373927] [2019-11-20 09:27:27,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865458232] [2019-11-20 09:27:27,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:27:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:27,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 09:27:27,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:27,428 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 09:27:27,429 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:27,444 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:27,454 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 09:27:27,455 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:27,476 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:27,477 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 09:27:27,477 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 09:27:27,530 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 09:27:27,530 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:27,551 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:27,552 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:27,552 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-20 09:27:27,967 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:27,967 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 79 [2019-11-20 09:27:27,969 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:28,018 INFO L567 ElimStorePlain]: treesize reduction 61, result has 33.0 percent of original size [2019-11-20 09:27:28,019 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:28,019 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:25 [2019-11-20 09:27:28,136 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 09:27:28,137 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:28,150 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:28,151 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 09:27:28,152 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:29 [2019-11-20 09:27:28,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:28,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:28,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2019-11-20 09:27:28,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887463611] [2019-11-20 09:27:28,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-20 09:27:28,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:28,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-20 09:27:28,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2019-11-20 09:27:28,300 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 25 states. [2019-11-20 09:27:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:29,590 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-20 09:27:29,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 09:27:29,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 18 [2019-11-20 09:27:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:29,593 INFO L225 Difference]: With dead ends: 51 [2019-11-20 09:27:29,593 INFO L226 Difference]: Without dead ends: 38 [2019-11-20 09:27:29,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2019-11-20 09:27:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-20 09:27:29,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2019-11-20 09:27:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 09:27:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-20 09:27:29,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2019-11-20 09:27:29,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:29,603 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-20 09:27:29,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-20 09:27:29,603 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-20 09:27:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 09:27:29,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:29,604 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:29,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:29,816 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash -780577906, now seen corresponding path program 2 times [2019-11-20 09:27:29,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:29,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292383425] [2019-11-20 09:27:29,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:27:29,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292383425] [2019-11-20 09:27:29,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18652368] [2019-11-20 09:27:29,922 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:27:29,979 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:27:29,979 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:29,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:27:29,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:27:30,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:30,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-20 09:27:30,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618333683] [2019-11-20 09:27:30,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 09:27:30,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 09:27:30,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 09:27:30,081 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 10 states. [2019-11-20 09:27:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:30,245 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2019-11-20 09:27:30,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 09:27:30,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 09:27:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:30,248 INFO L225 Difference]: With dead ends: 62 [2019-11-20 09:27:30,248 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 09:27:30,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-20 09:27:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 09:27:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-11-20 09:27:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 09:27:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-20 09:27:30,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2019-11-20 09:27:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:30,255 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 09:27:30,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 09:27:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-20 09:27:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 09:27:30,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:30,256 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:30,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:30,457 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:30,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1936976406, now seen corresponding path program 3 times [2019-11-20 09:27:30,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:30,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117531781] [2019-11-20 09:27:30,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:27:30,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117531781] [2019-11-20 09:27:30,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540065416] [2019-11-20 09:27:30,531 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:27:30,573 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 09:27:30,573 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:30,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:27:30,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:27:30,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:30,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-20 09:27:30,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749963010] [2019-11-20 09:27:30,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 09:27:30,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:30,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 09:27:30,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-20 09:27:30,630 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 10 states. [2019-11-20 09:27:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:30,749 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-11-20 09:27:30,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 09:27:30,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 09:27:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:30,750 INFO L225 Difference]: With dead ends: 37 [2019-11-20 09:27:30,750 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 09:27:30,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 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 09:27:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 09:27:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-20 09:27:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 09:27:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-20 09:27:30,756 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-11-20 09:27:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:30,756 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-20 09:27:30,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 09:27:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-20 09:27:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:27:30,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:30,758 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:30,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:30,961 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash 387064011, now seen corresponding path program 4 times [2019-11-20 09:27:30,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:30,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313823786] [2019-11-20 09:27:30,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:31,868 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-11-20 09:27:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:32,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313823786] [2019-11-20 09:27:32,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325026915] [2019-11-20 09:27:32,439 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:27:32,488 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 09:27:32,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:32,490 WARN L253 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-20 09:27:32,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:32,506 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 09:27:32,507 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:32,518 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:32,524 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 09:27:32,524 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:32,535 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:32,536 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 09:27:32,536 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2019-11-20 09:27:32,597 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 09:27:32,597 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:32,615 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:32,615 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:32,616 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-20 09:27:32,716 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:32,716 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:32,717 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:32,748 INFO L567 ElimStorePlain]: treesize reduction 36, result has 57.1 percent of original size [2019-11-20 09:27:32,748 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:32,749 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:48 [2019-11-20 09:27:33,082 INFO L343 Elim1Store]: treesize reduction 16, result has 89.1 percent of original size [2019-11-20 09:27:33,082 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 163 [2019-11-20 09:27:33,084 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:33,148 INFO L567 ElimStorePlain]: treesize reduction 116, result has 43.1 percent of original size [2019-11-20 09:27:33,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,152 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 09:27:33,153 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:89, output treesize:88 [2019-11-20 09:27:33,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:33,481 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:27:33,483 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2019-11-20 09:27:33,483 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:33,497 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:33,498 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:33,498 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:44 [2019-11-20 09:27:33,607 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:27:33,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:33,609 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2019-11-20 09:27:33,610 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:33,624 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:33,625 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:33,625 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:72, output treesize:59 [2019-11-20 09:27:33,730 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:27:33,731 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2019-11-20 09:27:33,732 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:33,744 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:33,745 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 09:27:33,745 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:47 [2019-11-20 09:27:33,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:33,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:33,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2019-11-20 09:27:33,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039570331] [2019-11-20 09:27:33,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-20 09:27:33,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:33,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-20 09:27:33,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1285, Unknown=0, NotChecked=0, Total=1482 [2019-11-20 09:27:33,855 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 39 states. [2019-11-20 09:27:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:36,586 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2019-11-20 09:27:36,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-20 09:27:36,586 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 25 [2019-11-20 09:27:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:36,587 INFO L225 Difference]: With dead ends: 86 [2019-11-20 09:27:36,587 INFO L226 Difference]: Without dead ends: 65 [2019-11-20 09:27:36,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=750, Invalid=4362, Unknown=0, NotChecked=0, Total=5112 [2019-11-20 09:27:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-20 09:27:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2019-11-20 09:27:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-20 09:27:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-11-20 09:27:36,598 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 25 [2019-11-20 09:27:36,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:36,599 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-11-20 09:27:36,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-20 09:27:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-11-20 09:27:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 09:27:36,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:36,600 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:36,803 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:36,803 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:36,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1640406643, now seen corresponding path program 5 times [2019-11-20 09:27:36,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:36,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141872808] [2019-11-20 09:27:36,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:27:36,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141872808] [2019-11-20 09:27:36,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960236923] [2019-11-20 09:27:36,896 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:36,938 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-20 09:27:36,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:36,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 09:27:36,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:27:36,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:36,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-11-20 09:27:36,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724064111] [2019-11-20 09:27:36,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 09:27:36,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 09:27:36,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-20 09:27:36,982 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2019-11-20 09:27:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:37,205 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2019-11-20 09:27:37,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 09:27:37,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-11-20 09:27:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:37,207 INFO L225 Difference]: With dead ends: 90 [2019-11-20 09:27:37,207 INFO L226 Difference]: Without dead ends: 56 [2019-11-20 09:27:37,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:27:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-20 09:27:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2019-11-20 09:27:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 09:27:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-11-20 09:27:37,215 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 27 [2019-11-20 09:27:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:37,215 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-11-20 09:27:37,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 09:27:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-11-20 09:27:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 09:27:37,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:37,216 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:37,417 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:37,417 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:37,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1752571627, now seen corresponding path program 1 times [2019-11-20 09:27:37,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:37,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094495121] [2019-11-20 09:27:37,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:27:37,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094495121] [2019-11-20 09:27:37,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164376992] [2019-11-20 09:27:37,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:37,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 09:27:37,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:27:37,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:37,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-11-20 09:27:37,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900067722] [2019-11-20 09:27:37,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 09:27:37,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 09:27:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-20 09:27:37,617 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 13 states. [2019-11-20 09:27:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:37,824 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-11-20 09:27:37,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 09:27:37,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-11-20 09:27:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:37,825 INFO L225 Difference]: With dead ends: 51 [2019-11-20 09:27:37,825 INFO L226 Difference]: Without dead ends: 41 [2019-11-20 09:27:37,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2019-11-20 09:27:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-20 09:27:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2019-11-20 09:27:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 09:27:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-11-20 09:27:37,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 27 [2019-11-20 09:27:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:37,831 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-11-20 09:27:37,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 09:27:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-11-20 09:27:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:27:37,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:37,832 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:38,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:38,033 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:38,033 INFO L82 PathProgramCache]: Analyzing trace with hash 669104364, now seen corresponding path program 6 times [2019-11-20 09:27:38,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:38,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414584478] [2019-11-20 09:27:38,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:38,893 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-11-20 09:27:39,040 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-11-20 09:27:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:40,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414584478] [2019-11-20 09:27:40,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346917412] [2019-11-20 09:27:40,045 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:40,100 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-20 09:27:40,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:40,102 WARN L253 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 54 conjunts are in the unsatisfiable core [2019-11-20 09:27:40,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:40,111 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 09:27:40,111 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,121 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,122 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,122 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-20 09:27:40,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,171 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 09:27:40,171 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,182 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,182 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:40,183 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:30 [2019-11-20 09:27:40,229 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,240 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,240 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:40,241 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,275 INFO L567 ElimStorePlain]: treesize reduction 36, result has 53.2 percent of original size [2019-11-20 09:27:40,276 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 09:27:40,276 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:41 [2019-11-20 09:27:40,328 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,338 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,339 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:40,339 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,363 INFO L567 ElimStorePlain]: treesize reduction 36, result has 53.2 percent of original size [2019-11-20 09:27:40,363 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 09:27:40,363 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:41 [2019-11-20 09:27:40,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,497 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,497 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 95 [2019-11-20 09:27:40,497 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,526 INFO L567 ElimStorePlain]: treesize reduction 24, result has 70.0 percent of original size [2019-11-20 09:27:40,527 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,527 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:33 [2019-11-20 09:27:40,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,657 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2019-11-20 09:27:40,657 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,680 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,680 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:43 [2019-11-20 09:27:40,857 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,859 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,862 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:40,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 49 [2019-11-20 09:27:40,864 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,885 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:40,885 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:40,886 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:52 [2019-11-20 09:27:41,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,147 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,148 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:27:41,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,150 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2019-11-20 09:27:41,151 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:41,165 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:41,165 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:41,166 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:58 [2019-11-20 09:27:41,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,271 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:27:41,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,273 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,273 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,274 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2019-11-20 09:27:41,275 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:41,291 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:41,291 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:41,291 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:76 [2019-11-20 09:27:41,425 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:41,426 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 47 [2019-11-20 09:27:41,427 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:41,441 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:41,441 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:41,441 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:46 [2019-11-20 09:27:41,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-20 09:27:41,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:41,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 48 [2019-11-20 09:27:41,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324116945] [2019-11-20 09:27:41,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-20 09:27:41,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-20 09:27:41,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1954, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 09:27:41,546 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 48 states. [2019-11-20 09:27:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:45,506 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2019-11-20 09:27:45,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-11-20 09:27:45,506 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 32 [2019-11-20 09:27:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:45,507 INFO L225 Difference]: With dead ends: 107 [2019-11-20 09:27:45,507 INFO L226 Difference]: Without dead ends: 93 [2019-11-20 09:27:45,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1149, Invalid=7781, Unknown=0, NotChecked=0, Total=8930 [2019-11-20 09:27:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-20 09:27:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 58. [2019-11-20 09:27:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-20 09:27:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-11-20 09:27:45,523 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 32 [2019-11-20 09:27:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:45,523 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-11-20 09:27:45,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-20 09:27:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-11-20 09:27:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:27:45,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:45,525 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:45,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:45,729 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash -342012886, now seen corresponding path program 2 times [2019-11-20 09:27:45,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:45,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360755324] [2019-11-20 09:27:45,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:46,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360755324] [2019-11-20 09:27:46,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043057236] [2019-11-20 09:27:46,085 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:46,122 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:27:46,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:46,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 09:27:46,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:46,140 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2019-11-20 09:27:46,140 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,148 INFO L567 ElimStorePlain]: treesize reduction 5, result has 79.2 percent of original size [2019-11-20 09:27:46,148 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,149 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:19 [2019-11-20 09:27:46,193 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:46,194 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:46,194 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 1 case distinctions, treesize of input 41 treesize of output 32 [2019-11-20 09:27:46,194 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,199 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:46,200 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,200 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:22 [2019-11-20 09:27:46,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:46,218 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:46,218 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 1 case distinctions, treesize of input 41 treesize of output 32 [2019-11-20 09:27:46,218 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,223 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:46,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,224 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:22 [2019-11-20 09:27:46,241 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 09:27:46,241 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,243 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:46,243 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:46,243 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-20 09:27:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:46,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:46,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 18 [2019-11-20 09:27:46,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91436850] [2019-11-20 09:27:46,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 09:27:46,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 09:27:46,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2019-11-20 09:27:46,256 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 18 states. [2019-11-20 09:27:46,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:46,564 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2019-11-20 09:27:46,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 09:27:46,564 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2019-11-20 09:27:46,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:46,565 INFO L225 Difference]: With dead ends: 77 [2019-11-20 09:27:46,565 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 09:27:46,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2019-11-20 09:27:46,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 09:27:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-11-20 09:27:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 09:27:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2019-11-20 09:27:46,573 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 32 [2019-11-20 09:27:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:46,574 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2019-11-20 09:27:46,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 09:27:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2019-11-20 09:27:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:27:46,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:46,575 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:46,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:46,779 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:46,779 INFO L82 PathProgramCache]: Analyzing trace with hash -919243538, now seen corresponding path program 3 times [2019-11-20 09:27:46,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:46,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762505640] [2019-11-20 09:27:46,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:47,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762505640] [2019-11-20 09:27:47,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434958582] [2019-11-20 09:27:47,035 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:47,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 09:27:47,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:47,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-20 09:27:47,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:47,155 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-20 09:27:47,155 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,167 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,167 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,168 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-20 09:27:47,228 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:47,229 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 28 treesize of output 27 [2019-11-20 09:27:47,230 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,240 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,240 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,240 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-11-20 09:27:47,384 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:47,386 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:47,387 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:47,388 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,388 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2019-11-20 09:27:47,389 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,402 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,403 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:31 [2019-11-20 09:27:47,454 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,455 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2019-11-20 09:27:47,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,474 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:47,475 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:47,475 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:30 [2019-11-20 09:27:47,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:47,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:47,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:47,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2019-11-20 09:27:47,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397035556] [2019-11-20 09:27:47,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-20 09:27:47,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:47,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-20 09:27:47,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2019-11-20 09:27:47,602 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 25 states. [2019-11-20 09:27:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:48,332 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2019-11-20 09:27:48,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-20 09:27:48,332 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2019-11-20 09:27:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:48,333 INFO L225 Difference]: With dead ends: 91 [2019-11-20 09:27:48,333 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 09:27:48,334 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=1517, Unknown=0, NotChecked=0, Total=1806 [2019-11-20 09:27:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 09:27:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2019-11-20 09:27:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 09:27:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2019-11-20 09:27:48,344 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 32 [2019-11-20 09:27:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:48,345 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2019-11-20 09:27:48,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-20 09:27:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2019-11-20 09:27:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:27:48,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:48,352 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:48,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:48,555 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash -148544086, now seen corresponding path program 4 times [2019-11-20 09:27:48,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:48,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417522089] [2019-11-20 09:27:48,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:48,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417522089] [2019-11-20 09:27:48,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70116794] [2019-11-20 09:27:48,925 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:48,960 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 09:27:48,960 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:48,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 09:27:48,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:48,969 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-20 09:27:48,969 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:48,974 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:48,974 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:48,974 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-20 09:27:49,013 INFO L343 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2019-11-20 09:27:49,013 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2019-11-20 09:27:49,013 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:49,017 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:49,017 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:49,017 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-11-20 09:27:49,077 INFO L343 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2019-11-20 09:27:49,077 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2019-11-20 09:27:49,078 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:49,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:49,089 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:49,089 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-11-20 09:27:49,226 INFO L343 Elim1Store]: treesize reduction 52, result has 49.5 percent of original size [2019-11-20 09:27:49,226 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 63 [2019-11-20 09:27:49,227 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:49,244 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:49,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:49,250 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2019-11-20 09:27:49,250 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:55, output treesize:165 [2019-11-20 09:27:49,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:27:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 09:27:49,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:49,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2019-11-20 09:27:49,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187797722] [2019-11-20 09:27:49,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-20 09:27:49,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:49,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-20 09:27:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2019-11-20 09:27:49,458 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 27 states. [2019-11-20 09:27:51,872 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 41 [2019-11-20 09:27:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:52,683 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2019-11-20 09:27:52,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 09:27:52,684 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2019-11-20 09:27:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:52,684 INFO L225 Difference]: With dead ends: 94 [2019-11-20 09:27:52,684 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 09:27:52,686 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=281, Invalid=1699, Unknown=0, NotChecked=0, Total=1980 [2019-11-20 09:27:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 09:27:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2019-11-20 09:27:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 09:27:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2019-11-20 09:27:52,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 32 [2019-11-20 09:27:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:52,702 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2019-11-20 09:27:52,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-20 09:27:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2019-11-20 09:27:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 09:27:52,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:52,707 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:52,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:52,919 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:52,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1182567058, now seen corresponding path program 7 times [2019-11-20 09:27:52,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:52,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431524159] [2019-11-20 09:27:52,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:27:53,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431524159] [2019-11-20 09:27:53,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133449302] [2019-11-20 09:27:53,019 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:53,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 09:27:53,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 09:27:53,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:53,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-11-20 09:27:53,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708622226] [2019-11-20 09:27:53,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 09:27:53,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:53,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 09:27:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:27:53,165 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 16 states. [2019-11-20 09:27:53,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:53,373 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2019-11-20 09:27:53,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 09:27:53,374 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2019-11-20 09:27:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:53,375 INFO L225 Difference]: With dead ends: 102 [2019-11-20 09:27:53,375 INFO L226 Difference]: Without dead ends: 64 [2019-11-20 09:27:53,375 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2019-11-20 09:27:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-20 09:27:53,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2019-11-20 09:27:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 09:27:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-11-20 09:27:53,383 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 34 [2019-11-20 09:27:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:53,383 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-11-20 09:27:53,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 09:27:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-11-20 09:27:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 09:27:53,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:53,384 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:53,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:53,584 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash 382236721, now seen corresponding path program 8 times [2019-11-20 09:27:53,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:53,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102080803] [2019-11-20 09:27:53,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-20 09:27:53,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102080803] [2019-11-20 09:27:53,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546427815] [2019-11-20 09:27:53,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:53,710 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:27:53,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:53,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 09:27:53,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-20 09:27:53,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:27:53,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-11-20 09:27:53,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600358948] [2019-11-20 09:27:53,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 09:27:53,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:27:53,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 09:27:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:27:53,771 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 16 states. [2019-11-20 09:27:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:27:53,980 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2019-11-20 09:27:53,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 09:27:53,980 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2019-11-20 09:27:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:27:53,981 INFO L225 Difference]: With dead ends: 58 [2019-11-20 09:27:53,981 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 09:27:53,982 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2019-11-20 09:27:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 09:27:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2019-11-20 09:27:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-20 09:27:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2019-11-20 09:27:53,988 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 37 [2019-11-20 09:27:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:27:53,988 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2019-11-20 09:27:53,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 09:27:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2019-11-20 09:27:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 09:27:53,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:27:53,989 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:27:54,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:54,193 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:27:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:27:54,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1984465037, now seen corresponding path program 9 times [2019-11-20 09:27:54,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:27:54,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734790050] [2019-11-20 09:27:54,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:27:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:27:55,240 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2019-11-20 09:27:55,392 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-11-20 09:27:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:27:57,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734790050] [2019-11-20 09:27:57,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554075062] [2019-11-20 09:27:57,030 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:27:57,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-20 09:27:57,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:27:57,123 WARN L253 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 69 conjunts are in the unsatisfiable core [2019-11-20 09:27:57,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:27:57,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 09:27:57,138 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,146 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,146 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,146 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-20 09:27:57,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:57,199 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 09:27:57,199 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,207 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,207 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:57,208 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:30 [2019-11-20 09:27:57,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:57,269 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,270 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:57,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,294 INFO L567 ElimStorePlain]: treesize reduction 36, result has 53.2 percent of original size [2019-11-20 09:27:57,295 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 09:27:57,295 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:41 [2019-11-20 09:27:57,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:57,362 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,362 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:57,362 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,386 INFO L567 ElimStorePlain]: treesize reduction 36, result has 53.2 percent of original size [2019-11-20 09:27:57,387 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 09:27:57,387 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:41 [2019-11-20 09:27:57,433 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:57,445 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,445 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:27:57,446 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,473 INFO L567 ElimStorePlain]: treesize reduction 36, result has 55.0 percent of original size [2019-11-20 09:27:57,473 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:57,474 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:44 [2019-11-20 09:27:57,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:57,915 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:57,916 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 95 [2019-11-20 09:27:57,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:57,978 INFO L567 ElimStorePlain]: treesize reduction 24, result has 72.7 percent of original size [2019-11-20 09:27:57,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:57,979 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:57,979 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:64 [2019-11-20 09:27:57,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,408 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,410 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,423 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,426 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2019-11-20 09:27:58,426 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:58,432 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,433 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,456 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:58,456 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 149 [2019-11-20 09:27:58,457 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:58,544 INFO L567 ElimStorePlain]: treesize reduction 84, result has 60.2 percent of original size [2019-11-20 09:27:58,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,545 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-20 09:27:58,545 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:165, output treesize:127 [2019-11-20 09:27:58,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:58,817 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-11-20 09:27:58,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:27:58,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,994 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:58,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,014 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 78 [2019-11-20 09:27:59,014 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:59,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,034 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,036 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 76 [2019-11-20 09:27:59,037 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:59,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,044 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,045 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,071 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:59,072 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 181 [2019-11-20 09:27:59,072 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:59,205 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-11-20 09:27:59,206 INFO L567 ElimStorePlain]: treesize reduction 60, result has 78.2 percent of original size [2019-11-20 09:27:59,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:59,207 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2019-11-20 09:27:59,207 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:278, output treesize:215 [2019-11-20 09:27:59,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:59,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:59,574 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-11-20 09:27:59,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:27:59,776 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:27:59,776 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 140 [2019-11-20 09:27:59,777 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:27:59,862 INFO L567 ElimStorePlain]: treesize reduction 24, result has 81.1 percent of original size [2019-11-20 09:27:59,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:59,863 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:27:59,864 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:116, output treesize:103 [2019-11-20 09:27:59,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:27:59,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:00,155 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-11-20 09:28:00,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:00,406 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,407 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,408 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,409 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,410 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,411 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:00,412 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,413 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,415 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,417 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2019-11-20 09:28:00,417 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,438 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:00,438 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,438 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:63 [2019-11-20 09:28:00,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,644 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:00,646 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,649 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,652 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 66 [2019-11-20 09:28:00,653 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,700 INFO L567 ElimStorePlain]: treesize reduction 3, result has 96.2 percent of original size [2019-11-20 09:28:00,701 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,701 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:76 [2019-11-20 09:28:00,886 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,887 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,888 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,889 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,891 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,893 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,894 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:00,906 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:00,906 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 112 [2019-11-20 09:28:00,907 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,944 INFO L567 ElimStorePlain]: treesize reduction 74, result has 48.3 percent of original size [2019-11-20 09:28:00,945 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:00,945 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:69 [2019-11-20 09:28:01,121 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:01,123 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:01,132 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:01,162 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:01,163 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 151 [2019-11-20 09:28:01,163 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:01,204 INFO L567 ElimStorePlain]: treesize reduction 140, result has 32.4 percent of original size [2019-11-20 09:28:01,204 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:01,205 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:83, output treesize:67 [2019-11-20 09:28:01,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-20 09:28:01,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:01,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32] total 64 [2019-11-20 09:28:01,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310472826] [2019-11-20 09:28:01,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2019-11-20 09:28:01,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:01,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2019-11-20 09:28:01,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=3627, Unknown=0, NotChecked=0, Total=4032 [2019-11-20 09:28:01,595 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 64 states. [2019-11-20 09:28:05,568 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 52 [2019-11-20 09:28:05,939 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2019-11-20 09:28:07,165 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 52 [2019-11-20 09:28:07,640 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-11-20 09:28:08,717 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2019-11-20 09:28:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:12,439 INFO L93 Difference]: Finished difference Result 183 states and 223 transitions. [2019-11-20 09:28:12,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-11-20 09:28:12,439 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 39 [2019-11-20 09:28:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:12,440 INFO L225 Difference]: With dead ends: 183 [2019-11-20 09:28:12,440 INFO L226 Difference]: Without dead ends: 162 [2019-11-20 09:28:12,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 8 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8751 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=2528, Invalid=21342, Unknown=0, NotChecked=0, Total=23870 [2019-11-20 09:28:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-11-20 09:28:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 88. [2019-11-20 09:28:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-20 09:28:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2019-11-20 09:28:12,460 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 39 [2019-11-20 09:28:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:12,460 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2019-11-20 09:28:12,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 64 states. [2019-11-20 09:28:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2019-11-20 09:28:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 09:28:12,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:12,461 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:12,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:12,665 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:12,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1765610319, now seen corresponding path program 5 times [2019-11-20 09:28:12,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:12,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624900017] [2019-11-20 09:28:12,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 09:28:12,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624900017] [2019-11-20 09:28:12,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112420495] [2019-11-20 09:28:12,927 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:13,043 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-20 09:28:13,043 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:13,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 09:28:13,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:13,063 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 09:28:13,063 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,080 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:13,080 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,081 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-20 09:28:13,103 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:13,104 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-11-20 09:28:13,104 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,115 INFO L567 ElimStorePlain]: treesize reduction 30, result has 41.2 percent of original size [2019-11-20 09:28:13,116 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:13,116 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-20 09:28:13,139 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:13,140 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-11-20 09:28:13,140 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,162 INFO L567 ElimStorePlain]: treesize reduction 30, result has 41.2 percent of original size [2019-11-20 09:28:13,163 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:13,163 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-11-20 09:28:13,214 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:13,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 72 [2019-11-20 09:28:13,215 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,225 INFO L567 ElimStorePlain]: treesize reduction 62, result has 17.3 percent of original size [2019-11-20 09:28:13,225 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,225 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:13 [2019-11-20 09:28:13,242 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 09:28:13,242 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,243 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:13,243 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:13,244 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-11-20 09:28:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-20 09:28:13,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:13,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2019-11-20 09:28:13,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915627930] [2019-11-20 09:28:13,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 09:28:13,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 09:28:13,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2019-11-20 09:28:13,258 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 20 states. [2019-11-20 09:28:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:13,675 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2019-11-20 09:28:13,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 09:28:13,675 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2019-11-20 09:28:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:13,676 INFO L225 Difference]: With dead ends: 116 [2019-11-20 09:28:13,676 INFO L226 Difference]: Without dead ends: 88 [2019-11-20 09:28:13,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 09:28:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-20 09:28:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2019-11-20 09:28:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-20 09:28:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2019-11-20 09:28:13,688 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 39 [2019-11-20 09:28:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:13,690 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2019-11-20 09:28:13,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 09:28:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2019-11-20 09:28:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 09:28:13,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:13,691 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:13,895 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:13,895 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1843916427, now seen corresponding path program 6 times [2019-11-20 09:28:13,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:13,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334086623] [2019-11-20 09:28:13,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 09:28:14,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334086623] [2019-11-20 09:28:14,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479383950] [2019-11-20 09:28:14,184 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:14,244 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-20 09:28:14,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:14,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-20 09:28:14,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:14,251 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-20 09:28:14,252 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,257 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,257 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,257 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-20 09:28:14,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,279 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 09:28:14,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,291 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,291 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,291 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-11-20 09:28:14,343 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,346 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,346 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-11-20 09:28:14,346 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,353 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,354 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,354 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2019-11-20 09:28:14,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,402 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,403 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,404 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,406 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,406 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2019-11-20 09:28:14,407 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,420 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,421 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,421 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2019-11-20 09:28:14,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:14,497 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:14,498 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,499 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 38 treesize of output 19 [2019-11-20 09:28:14,499 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,503 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:14,503 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:14,503 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:7 [2019-11-20 09:28:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-20 09:28:14,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:14,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2019-11-20 09:28:14,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731544416] [2019-11-20 09:28:14,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 09:28:14,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:14,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 09:28:14,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2019-11-20 09:28:14,525 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand 22 states. [2019-11-20 09:28:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:14,916 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2019-11-20 09:28:14,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 09:28:14,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2019-11-20 09:28:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:14,917 INFO L225 Difference]: With dead ends: 102 [2019-11-20 09:28:14,917 INFO L226 Difference]: Without dead ends: 77 [2019-11-20 09:28:14,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2019-11-20 09:28:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-20 09:28:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-11-20 09:28:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-20 09:28:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2019-11-20 09:28:14,926 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 39 [2019-11-20 09:28:14,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:14,926 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2019-11-20 09:28:14,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 09:28:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2019-11-20 09:28:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 09:28:14,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:14,927 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:15,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:15,129 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash -52187595, now seen corresponding path program 10 times [2019-11-20 09:28:15,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:15,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187672019] [2019-11-20 09:28:15,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-20 09:28:15,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187672019] [2019-11-20 09:28:15,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974530268] [2019-11-20 09:28:15,241 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:15,294 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 09:28:15,294 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:15,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 09:28:15,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 09:28:15,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:15,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2019-11-20 09:28:15,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097510132] [2019-11-20 09:28:15,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 09:28:15,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:15,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 09:28:15,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2019-11-20 09:28:15,406 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 19 states. [2019-11-20 09:28:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:15,603 INFO L93 Difference]: Finished difference Result 130 states and 148 transitions. [2019-11-20 09:28:15,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 09:28:15,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2019-11-20 09:28:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:15,603 INFO L225 Difference]: With dead ends: 130 [2019-11-20 09:28:15,604 INFO L226 Difference]: Without dead ends: 74 [2019-11-20 09:28:15,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2019-11-20 09:28:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-20 09:28:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2019-11-20 09:28:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 09:28:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-11-20 09:28:15,610 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 41 [2019-11-20 09:28:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:15,611 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-20 09:28:15,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 09:28:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2019-11-20 09:28:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 09:28:15,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:15,612 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:15,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:15,815 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash 844219272, now seen corresponding path program 7 times [2019-11-20 09:28:15,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:15,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274159944] [2019-11-20 09:28:15,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-20 09:28:15,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274159944] [2019-11-20 09:28:15,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826451998] [2019-11-20 09:28:15,926 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:15,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 09:28:15,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-20 09:28:16,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:16,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2019-11-20 09:28:16,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765190984] [2019-11-20 09:28:16,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 09:28:16,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 09:28:16,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-11-20 09:28:16,064 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 19 states. [2019-11-20 09:28:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:16,439 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2019-11-20 09:28:16,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 09:28:16,439 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2019-11-20 09:28:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:16,440 INFO L225 Difference]: With dead ends: 73 [2019-11-20 09:28:16,440 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 09:28:16,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2019-11-20 09:28:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 09:28:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2019-11-20 09:28:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 09:28:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-11-20 09:28:16,450 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 44 [2019-11-20 09:28:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:16,450 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-11-20 09:28:16,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 09:28:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-11-20 09:28:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-20 09:28:16,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:16,451 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:16,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:16,652 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1593279692, now seen corresponding path program 11 times [2019-11-20 09:28:16,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:16,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991395315] [2019-11-20 09:28:16,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:17,617 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2019-11-20 09:28:17,904 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2019-11-20 09:28:18,102 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2019-11-20 09:28:18,387 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 54 [2019-11-20 09:28:18,604 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2019-11-20 09:28:18,888 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-11-20 09:28:19,058 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2019-11-20 09:28:19,347 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-11-20 09:28:19,515 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-11-20 09:28:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:20,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991395315] [2019-11-20 09:28:20,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809680196] [2019-11-20 09:28:20,822 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:20,989 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 09:28:20,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:20,992 WARN L253 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 86 conjunts are in the unsatisfiable core [2019-11-20 09:28:20,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:21,002 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 09:28:21,002 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,014 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 09:28:21,014 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,021 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,021 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 09:28:21,021 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2019-11-20 09:28:21,061 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 09:28:21,062 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,071 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,071 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,071 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-20 09:28:21,154 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,156 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 35 treesize of output 37 [2019-11-20 09:28:21,156 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,167 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,167 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,167 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2019-11-20 09:28:21,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,268 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,269 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2019-11-20 09:28:21,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,282 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,282 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,283 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2019-11-20 09:28:21,397 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,398 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,400 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,402 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,403 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2019-11-20 09:28:21,404 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,418 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,419 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,419 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:68 [2019-11-20 09:28:21,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,540 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,541 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,543 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2019-11-20 09:28:21,544 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,559 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,559 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2019-11-20 09:28:21,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,751 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:21,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:21,757 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 75 [2019-11-20 09:28:21,757 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,777 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:21,777 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:21,778 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:100, output treesize:68 [2019-11-20 09:28:22,007 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:22,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,009 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,010 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,011 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,015 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 73 [2019-11-20 09:28:22,015 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,034 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:22,034 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,034 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:100, output treesize:66 [2019-11-20 09:28:22,236 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,237 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,238 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,238 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,242 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:22,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,244 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,245 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 73 [2019-11-20 09:28:22,245 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,262 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:22,262 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,262 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:100, output treesize:66 [2019-11-20 09:28:22,477 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,478 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,479 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,482 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:22,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,485 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,486 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 73 [2019-11-20 09:28:22,487 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,505 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:22,506 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,506 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:100, output treesize:66 [2019-11-20 09:28:22,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,735 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,739 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2019-11-20 09:28:22,740 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,756 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:22,756 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,756 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:64 [2019-11-20 09:28:22,906 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,908 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,910 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:22,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:22,914 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 75 [2019-11-20 09:28:22,915 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,933 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:22,934 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:22,934 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:75 [2019-11-20 09:28:23,079 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:23,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,083 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,085 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,085 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,086 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,087 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,088 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 78 [2019-11-20 09:28:23,088 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,112 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:23,112 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,112 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:80 [2019-11-20 09:28:23,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,273 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,274 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:23,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,280 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 83 [2019-11-20 09:28:23,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,301 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:23,301 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,301 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:87 [2019-11-20 09:28:23,490 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,492 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,495 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:23,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,498 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,499 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,501 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,502 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 86 [2019-11-20 09:28:23,503 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,528 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:23,528 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,528 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:114, output treesize:80 [2019-11-20 09:28:23,704 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,712 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:23,714 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:28:23,715 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 81 [2019-11-20 09:28:23,716 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:23,748 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:23,749 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:23,749 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:95, output treesize:74 [2019-11-20 09:28:24,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:24,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:24,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 78 [2019-11-20 09:28:24,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317383421] [2019-11-20 09:28:24,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2019-11-20 09:28:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2019-11-20 09:28:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=5422, Unknown=0, NotChecked=0, Total=6006 [2019-11-20 09:28:24,090 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 78 states. [2019-11-20 09:28:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:29,059 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2019-11-20 09:28:29,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-11-20 09:28:29,060 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 46 [2019-11-20 09:28:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:29,060 INFO L225 Difference]: With dead ends: 112 [2019-11-20 09:28:29,060 INFO L226 Difference]: Without dead ends: 87 [2019-11-20 09:28:29,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5533 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=1406, Invalid=12874, Unknown=0, NotChecked=0, Total=14280 [2019-11-20 09:28:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-20 09:28:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2019-11-20 09:28:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 09:28:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2019-11-20 09:28:29,070 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 46 [2019-11-20 09:28:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:29,070 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2019-11-20 09:28:29,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 78 states. [2019-11-20 09:28:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2019-11-20 09:28:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-20 09:28:29,071 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:29,071 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:29,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:29,272 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:29,272 INFO L82 PathProgramCache]: Analyzing trace with hash -2108307122, now seen corresponding path program 12 times [2019-11-20 09:28:29,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:29,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115103648] [2019-11-20 09:28:29,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-20 09:28:29,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115103648] [2019-11-20 09:28:29,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532281530] [2019-11-20 09:28:29,393 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:29,476 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 09:28:29,476 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:29,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 09:28:29,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 45 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 09:28:29,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:29,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 24 [2019-11-20 09:28:29,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967976723] [2019-11-20 09:28:29,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 09:28:29,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:29,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 09:28:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2019-11-20 09:28:29,596 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 24 states. [2019-11-20 09:28:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:30,034 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2019-11-20 09:28:30,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-20 09:28:30,035 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2019-11-20 09:28:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:30,036 INFO L225 Difference]: With dead ends: 132 [2019-11-20 09:28:30,036 INFO L226 Difference]: Without dead ends: 76 [2019-11-20 09:28:30,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2019-11-20 09:28:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-20 09:28:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2019-11-20 09:28:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-20 09:28:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2019-11-20 09:28:30,045 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 48 [2019-11-20 09:28:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:30,045 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2019-11-20 09:28:30,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 09:28:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2019-11-20 09:28:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-20 09:28:30,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:30,046 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:30,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:30,246 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1708062953, now seen corresponding path program 8 times [2019-11-20 09:28:30,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:30,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828895755] [2019-11-20 09:28:30,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-20 09:28:30,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828895755] [2019-11-20 09:28:30,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583399218] [2019-11-20 09:28:30,399 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:30,459 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:28:30,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:30,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 09:28:30,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-20 09:28:30,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:30,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2019-11-20 09:28:30,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551943847] [2019-11-20 09:28:30,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 09:28:30,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:30,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 09:28:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2019-11-20 09:28:30,552 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 22 states. [2019-11-20 09:28:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:30,904 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2019-11-20 09:28:30,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 09:28:30,906 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2019-11-20 09:28:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:30,907 INFO L225 Difference]: With dead ends: 75 [2019-11-20 09:28:30,907 INFO L226 Difference]: Without dead ends: 71 [2019-11-20 09:28:30,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 09:28:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-20 09:28:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2019-11-20 09:28:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 09:28:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2019-11-20 09:28:30,916 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 51 [2019-11-20 09:28:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:30,916 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2019-11-20 09:28:30,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 09:28:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2019-11-20 09:28:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 09:28:30,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:30,917 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:31,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:31,117 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 99891227, now seen corresponding path program 13 times [2019-11-20 09:28:31,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:31,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047795495] [2019-11-20 09:28:31,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:32,409 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2019-11-20 09:28:32,583 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2019-11-20 09:28:32,722 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2019-11-20 09:28:32,908 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2019-11-20 09:28:33,116 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 61 [2019-11-20 09:28:33,278 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2019-11-20 09:28:33,470 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2019-11-20 09:28:33,690 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2019-11-20 09:28:33,865 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 55 [2019-11-20 09:28:34,070 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2019-11-20 09:28:34,297 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2019-11-20 09:28:34,479 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2019-11-20 09:28:34,667 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2019-11-20 09:28:34,860 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-11-20 09:28:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 2 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:36,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047795495] [2019-11-20 09:28:36,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033861691] [2019-11-20 09:28:36,520 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:36,561 WARN L253 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 95 conjunts are in the unsatisfiable core [2019-11-20 09:28:36,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:36,566 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 09:28:36,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,572 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:36,575 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 09:28:36,575 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:36,581 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 09:28:36,581 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-20 09:28:36,621 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 09:28:36,622 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,635 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:36,636 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,636 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-11-20 09:28:36,726 INFO L343 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2019-11-20 09:28:36,726 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 1 case distinctions, treesize of input 35 treesize of output 37 [2019-11-20 09:28:36,726 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:36,735 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,736 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2019-11-20 09:28:36,846 INFO L343 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2019-11-20 09:28:36,846 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2019-11-20 09:28:36,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,857 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:36,857 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:36,857 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:53 [2019-11-20 09:28:37,025 INFO L343 Elim1Store]: treesize reduction 32, result has 77.5 percent of original size [2019-11-20 09:28:37,026 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 140 [2019-11-20 09:28:37,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,065 INFO L567 ElimStorePlain]: treesize reduction 84, result has 39.1 percent of original size [2019-11-20 09:28:37,065 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,066 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2019-11-20 09:28:37,247 INFO L343 Elim1Store]: treesize reduction 114, result has 51.7 percent of original size [2019-11-20 09:28:37,248 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 155 [2019-11-20 09:28:37,248 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,291 INFO L567 ElimStorePlain]: treesize reduction 84, result has 44.0 percent of original size [2019-11-20 09:28:37,291 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,292 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:66 [2019-11-20 09:28:37,564 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2019-11-20 09:28:37,565 INFO L343 Elim1Store]: treesize reduction 214, result has 38.5 percent of original size [2019-11-20 09:28:37,565 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 170 [2019-11-20 09:28:37,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,664 INFO L567 ElimStorePlain]: treesize reduction 84, result has 49.1 percent of original size [2019-11-20 09:28:37,665 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:37,665 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:81 [2019-11-20 09:28:38,355 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 80 [2019-11-20 09:28:38,355 INFO L343 Elim1Store]: treesize reduction 170, result has 65.4 percent of original size [2019-11-20 09:28:38,355 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 96 treesize of output 365 [2019-11-20 09:28:38,356 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:38,429 INFO L567 ElimStorePlain]: treesize reduction 371, result has 17.2 percent of original size [2019-11-20 09:28:38,429 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:38,430 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:77 [2019-11-20 09:28:38,877 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 75 [2019-11-20 09:28:38,877 INFO L343 Elim1Store]: treesize reduction 253, result has 53.2 percent of original size [2019-11-20 09:28:38,877 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 101 treesize of output 332 [2019-11-20 09:28:38,878 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:38,947 INFO L567 ElimStorePlain]: treesize reduction 317, result has 20.6 percent of original size [2019-11-20 09:28:38,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:38,947 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:114, output treesize:82 [2019-11-20 09:28:39,417 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 80 [2019-11-20 09:28:39,418 INFO L343 Elim1Store]: treesize reduction 170, result has 65.4 percent of original size [2019-11-20 09:28:39,418 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 96 treesize of output 365 [2019-11-20 09:28:39,419 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:39,498 INFO L567 ElimStorePlain]: treesize reduction 197, result has 27.0 percent of original size [2019-11-20 09:28:39,498 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:39,498 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:73 [2019-11-20 09:28:40,112 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 80 [2019-11-20 09:28:40,112 INFO L343 Elim1Store]: treesize reduction 170, result has 65.4 percent of original size [2019-11-20 09:28:40,113 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 96 treesize of output 365 [2019-11-20 09:28:40,115 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:40,223 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2019-11-20 09:28:40,224 INFO L567 ElimStorePlain]: treesize reduction 371, result has 17.2 percent of original size [2019-11-20 09:28:40,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:40,224 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:77 [2019-11-20 09:28:40,750 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 73 [2019-11-20 09:28:40,751 INFO L343 Elim1Store]: treesize reduction 243, result has 53.4 percent of original size [2019-11-20 09:28:40,751 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 99 treesize of output 322 [2019-11-20 09:28:40,752 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:40,823 INFO L567 ElimStorePlain]: treesize reduction 171, result has 31.3 percent of original size [2019-11-20 09:28:40,823 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:40,824 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:78 [2019-11-20 09:28:41,182 INFO L343 Elim1Store]: treesize reduction 304, result has 12.6 percent of original size [2019-11-20 09:28:41,182 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 81 treesize of output 83 [2019-11-20 09:28:41,183 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:41,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:41,200 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:41,201 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:70 [2019-11-20 09:28:41,497 INFO L343 Elim1Store]: treesize reduction 170, result has 32.8 percent of original size [2019-11-20 09:28:41,497 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 176 [2019-11-20 09:28:41,499 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:41,572 INFO L567 ElimStorePlain]: treesize reduction 130, result has 38.4 percent of original size [2019-11-20 09:28:41,573 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:41,573 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:98, output treesize:81 [2019-11-20 09:28:42,007 INFO L343 Elim1Store]: treesize reduction 170, result has 32.8 percent of original size [2019-11-20 09:28:42,007 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 176 [2019-11-20 09:28:42,008 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,076 INFO L567 ElimStorePlain]: treesize reduction 151, result has 39.1 percent of original size [2019-11-20 09:28:42,076 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,077 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:102, output treesize:97 [2019-11-20 09:28:42,558 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 73 [2019-11-20 09:28:42,558 INFO L343 Elim1Store]: treesize reduction 187, result has 47.8 percent of original size [2019-11-20 09:28:42,559 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 280 [2019-11-20 09:28:42,560 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,634 INFO L567 ElimStorePlain]: treesize reduction 302, result has 24.7 percent of original size [2019-11-20 09:28:42,634 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,634 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:99 [2019-11-20 09:28:42,917 INFO L343 Elim1Store]: treesize reduction 170, result has 32.8 percent of original size [2019-11-20 09:28:42,918 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 179 [2019-11-20 09:28:42,919 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,971 INFO L567 ElimStorePlain]: treesize reduction 144, result has 40.2 percent of original size [2019-11-20 09:28:42,971 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:42,972 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:117, output treesize:97 [2019-11-20 09:28:43,320 INFO L343 Elim1Store]: treesize reduction 129, result has 52.4 percent of original size [2019-11-20 09:28:43,320 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 111 treesize of output 242 [2019-11-20 09:28:43,322 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:43,389 INFO L567 ElimStorePlain]: treesize reduction 262, result has 28.2 percent of original size [2019-11-20 09:28:43,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:43,389 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:103 [2019-11-20 09:28:43,633 INFO L343 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2019-11-20 09:28:43,634 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 87 [2019-11-20 09:28:43,634 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:43,652 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:43,653 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 09:28:43,653 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:115, output treesize:92 [2019-11-20 09:28:43,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:43,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:43,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 91 [2019-11-20 09:28:43,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081506424] [2019-11-20 09:28:43,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 91 states [2019-11-20 09:28:43,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:43,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2019-11-20 09:28:43,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=7314, Unknown=0, NotChecked=0, Total=8190 [2019-11-20 09:28:43,957 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 91 states. [2019-11-20 09:28:47,569 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2019-11-20 09:28:47,916 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2019-11-20 09:28:48,263 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2019-11-20 09:28:49,171 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 63 [2019-11-20 09:28:49,550 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2019-11-20 09:28:49,937 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2019-11-20 09:28:50,629 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2019-11-20 09:28:50,991 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-11-20 09:28:51,544 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2019-11-20 09:28:51,902 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2019-11-20 09:28:52,165 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 67 [2019-11-20 09:28:55,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:55,874 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2019-11-20 09:28:55,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-11-20 09:28:55,874 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 53 [2019-11-20 09:28:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:55,875 INFO L225 Difference]: With dead ends: 138 [2019-11-20 09:28:55,875 INFO L226 Difference]: Without dead ends: 99 [2019-11-20 09:28:55,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10839 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2986, Invalid=25744, Unknown=0, NotChecked=0, Total=28730 [2019-11-20 09:28:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-20 09:28:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2019-11-20 09:28:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-20 09:28:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2019-11-20 09:28:55,897 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 53 [2019-11-20 09:28:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:55,897 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2019-11-20 09:28:55,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 91 states. [2019-11-20 09:28:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2019-11-20 09:28:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-20 09:28:55,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:55,898 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:56,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:56,101 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:56,101 INFO L82 PathProgramCache]: Analyzing trace with hash -996961989, now seen corresponding path program 9 times [2019-11-20 09:28:56,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:56,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854387285] [2019-11-20 09:28:56,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-20 09:28:56,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854387285] [2019-11-20 09:28:56,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814107306] [2019-11-20 09:28:56,274 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:56,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-20 09:28:56,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:56,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-20 09:28:56,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:56,462 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-20 09:28:56,462 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:56,469 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:56,469 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:28:56,469 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-11-20 09:28:56,574 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:56,574 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 82 [2019-11-20 09:28:56,575 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:56,608 INFO L567 ElimStorePlain]: treesize reduction 32, result has 68.3 percent of original size [2019-11-20 09:28:56,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,609 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:56,610 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:69 [2019-11-20 09:28:56,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:56,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:56,736 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 57 treesize of output 48 [2019-11-20 09:28:56,737 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:56,754 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:56,754 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 111 [2019-11-20 09:28:56,754 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:56,821 INFO L567 ElimStorePlain]: treesize reduction 32, result has 77.8 percent of original size [2019-11-20 09:28:56,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,822 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-11-20 09:28:56,822 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:112 [2019-11-20 09:28:56,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:56,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:28:57,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,028 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:57,028 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 68 treesize of output 113 [2019-11-20 09:28:57,029 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,033 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,035 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,037 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 50 treesize of output 41 [2019-11-20 09:28:57,037 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,042 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 52 treesize of output 43 [2019-11-20 09:28:57,042 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,131 INFO L567 ElimStorePlain]: treesize reduction 32, result has 80.7 percent of original size [2019-11-20 09:28:57,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,132 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2019-11-20 09:28:57,133 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:171, output treesize:134 [2019-11-20 09:28:57,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 09:28:57,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,416 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-11-20 09:28:57,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-20 09:28:57,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,498 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 50 treesize of output 41 [2019-11-20 09:28:57,499 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,513 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 73 treesize of output 64 [2019-11-20 09:28:57,513 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,524 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,524 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 52 treesize of output 43 [2019-11-20 09:28:57,525 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,548 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:57,548 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 71 treesize of output 116 [2019-11-20 09:28:57,549 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,555 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:57,556 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 73 treesize of output 64 [2019-11-20 09:28:57,556 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:57,706 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-11-20 09:28:57,706 INFO L567 ElimStorePlain]: treesize reduction 56, result has 78.9 percent of original size [2019-11-20 09:28:57,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,708 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 5 xjuncts. [2019-11-20 09:28:57,708 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:320, output treesize:209 [2019-11-20 09:28:57,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-20 09:28:57,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:57,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,159 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2019-11-20 09:28:58,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 7 terms [2019-11-20 09:28:58,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,278 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 61 treesize of output 52 [2019-11-20 09:28:58,279 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,291 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 50 treesize of output 41 [2019-11-20 09:28:58,292 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,318 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:58,319 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 62 treesize of output 107 [2019-11-20 09:28:58,319 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,326 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,332 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 61 treesize of output 52 [2019-11-20 09:28:58,332 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,340 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,345 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 61 treesize of output 52 [2019-11-20 09:28:58,346 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,358 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,358 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 52 treesize of output 43 [2019-11-20 09:28:58,359 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,365 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:28:58,366 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 73 treesize of output 64 [2019-11-20 09:28:58,366 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:58,577 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2019-11-20 09:28:58,578 INFO L567 ElimStorePlain]: treesize reduction 35, result has 88.9 percent of original size [2019-11-20 09:28:58,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,580 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 7 xjuncts. [2019-11-20 09:28:58,580 INFO L221 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:421, output treesize:281 [2019-11-20 09:28:58,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 7 terms [2019-11-20 09:28:58,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:58,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:28:59,130 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 120 [2019-11-20 09:28:59,338 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:28:59,338 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 86 [2019-11-20 09:28:59,338 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:28:59,377 INFO L567 ElimStorePlain]: treesize reduction 64, result has 47.5 percent of original size [2019-11-20 09:28:59,377 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:28:59,378 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:58 [2019-11-20 09:28:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-20 09:28:59,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:59,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 35 [2019-11-20 09:28:59,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951905441] [2019-11-20 09:28:59,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-20 09:28:59,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-20 09:28:59,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2019-11-20 09:28:59,530 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 35 states. [2019-11-20 09:29:00,327 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 53 [2019-11-20 09:29:00,695 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 55 [2019-11-20 09:29:05,172 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 32 [2019-11-20 09:29:06,177 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 32 [2019-11-20 09:29:07,734 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2019-11-20 09:29:08,726 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 73 [2019-11-20 09:29:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:29:09,208 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2019-11-20 09:29:09,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-11-20 09:29:09,208 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 55 [2019-11-20 09:29:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:29:09,208 INFO L225 Difference]: With dead ends: 107 [2019-11-20 09:29:09,209 INFO L226 Difference]: Without dead ends: 86 [2019-11-20 09:29:09,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1019, Invalid=5619, Unknown=4, NotChecked=0, Total=6642 [2019-11-20 09:29:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-20 09:29:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2019-11-20 09:29:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-20 09:29:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2019-11-20 09:29:09,229 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 55 [2019-11-20 09:29:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:29:09,229 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2019-11-20 09:29:09,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-20 09:29:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2019-11-20 09:29:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-20 09:29:09,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:29:09,230 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:29:09,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:09,434 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:29:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:29:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash 703185580, now seen corresponding path program 14 times [2019-11-20 09:29:09,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:29:09,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586294304] [2019-11-20 09:29:09,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:29:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:29:10,651 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2019-11-20 09:29:11,075 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2019-11-20 09:29:11,252 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-11-20 09:29:11,561 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2019-11-20 09:29:11,757 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2019-11-20 09:29:11,943 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2019-11-20 09:29:12,144 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-11-20 09:29:12,361 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2019-11-20 09:29:12,701 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 57 [2019-11-20 09:29:12,959 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-11-20 09:29:13,164 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2019-11-20 09:29:13,443 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2019-11-20 09:29:13,741 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2019-11-20 09:29:13,968 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2019-11-20 09:29:14,204 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-11-20 09:29:14,496 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-20 09:29:14,691 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-11-20 09:29:14,898 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-11-20 09:29:15,210 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2019-11-20 09:29:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:29:17,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586294304] [2019-11-20 09:29:17,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053183964] [2019-11-20 09:29:17,373 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:17,435 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:29:17,435 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:29:17,437 WARN L253 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 111 conjunts are in the unsatisfiable core [2019-11-20 09:29:17,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:29:17,449 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 09:29:17,449 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,462 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:17,463 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,463 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-20 09:29:17,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,537 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 09:29:17,537 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:17,549 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,549 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-11-20 09:29:17,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,700 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 09:29:17,700 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,714 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:17,714 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,714 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2019-11-20 09:29:17,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:17,878 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2019-11-20 09:29:17,878 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,899 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:17,899 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:17,900 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2019-11-20 09:29:18,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2019-11-20 09:29:18,081 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,102 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:18,102 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,102 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2019-11-20 09:29:18,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,299 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2019-11-20 09:29:18,300 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,320 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:18,321 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,321 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2019-11-20 09:29:18,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,578 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2019-11-20 09:29:18,579 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,602 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:18,603 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,603 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2019-11-20 09:29:18,820 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,821 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,822 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,825 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,826 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,827 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,828 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,829 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,830 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,836 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:18,841 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 95 [2019-11-20 09:29:18,842 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:18,872 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:18,872 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:91 [2019-11-20 09:29:19,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,473 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,477 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,478 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:19,479 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,485 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,487 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,488 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,489 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,490 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,492 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 99 [2019-11-20 09:29:19,493 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:19,522 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:19,522 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:19,522 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:90 [2019-11-20 09:29:19,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,865 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:19,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,872 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,873 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,880 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:19,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2019-11-20 09:29:19,887 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:19,917 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:19,917 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:19,917 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:88 [2019-11-20 09:29:20,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,266 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,268 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,270 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:20,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,273 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,276 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,280 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2019-11-20 09:29:20,281 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:20,310 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:20,310 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:20,311 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:88 [2019-11-20 09:29:20,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,688 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,688 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,690 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,691 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,692 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,693 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,694 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,695 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,696 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:20,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,703 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,704 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:20,709 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2019-11-20 09:29:20,710 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:20,744 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:20,744 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:20,744 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:88 [2019-11-20 09:29:21,165 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,170 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,172 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,174 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,178 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,178 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:21,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,184 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,186 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,187 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,188 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,189 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,190 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,191 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2019-11-20 09:29:21,192 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:21,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:21,221 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:21,221 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:88 [2019-11-20 09:29:21,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,715 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,716 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,720 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,721 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:21,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,725 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,729 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,735 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:21,739 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2019-11-20 09:29:21,740 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:21,783 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:21,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:21,784 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:88 [2019-11-20 09:29:22,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,281 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,283 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,299 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 95 [2019-11-20 09:29:22,299 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,325 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:22,325 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:104, output treesize:83 [2019-11-20 09:29:22,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,609 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,611 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,612 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,615 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,616 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,617 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:22,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,620 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,621 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,623 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,624 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,625 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,626 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,628 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,631 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 99 [2019-11-20 09:29:22,631 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,660 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:22,660 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,661 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:111, output treesize:90 [2019-11-20 09:29:22,938 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,939 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:22,940 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,942 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,943 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,944 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,944 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,945 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,946 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,948 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,949 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,952 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,953 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,954 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,955 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,960 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,961 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:22,962 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 102 [2019-11-20 09:29:22,962 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:22,992 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:22,992 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:93 [2019-11-20 09:29:23,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,289 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:23,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,305 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 105 [2019-11-20 09:29:23,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:23,335 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:23,335 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:23,335 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:119, output treesize:96 [2019-11-20 09:29:23,630 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,631 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,632 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,634 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,635 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,636 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,637 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,638 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,639 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,639 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:23,640 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,642 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,645 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,646 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,649 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,653 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 97 [2019-11-20 09:29:23,654 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:23,682 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:23,683 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:23,683 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:111, output treesize:88 [2019-11-20 09:29:23,986 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,987 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,988 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,989 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,990 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,992 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,993 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,994 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,995 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,995 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:23,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,997 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,998 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:23,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,000 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,001 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,002 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,003 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,004 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,006 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,009 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 100 [2019-11-20 09:29:24,010 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:24,043 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:24,044 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:24,044 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:114, output treesize:97 [2019-11-20 09:29:24,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,349 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,350 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,351 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,356 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,358 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,359 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,359 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:29:24,360 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,361 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,362 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,363 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,364 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,365 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,366 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,367 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,368 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,369 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 22 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 105 [2019-11-20 09:29:24,370 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:24,399 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:24,400 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:24,400 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:100 [2019-11-20 09:29:24,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:29:24,741 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 85 [2019-11-20 09:29:24,741 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:24,765 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:24,765 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:24,766 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:95, output treesize:74 [2019-11-20 09:29:24,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:29:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:29:25,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:29:25,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 54] total 104 [2019-11-20 09:29:25,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657142233] [2019-11-20 09:29:25,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 104 states [2019-11-20 09:29:25,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:29:25,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2019-11-20 09:29:25,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1268, Invalid=9444, Unknown=0, NotChecked=0, Total=10712 [2019-11-20 09:29:25,081 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 104 states. [2019-11-20 09:29:29,065 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2019-11-20 09:29:29,570 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2019-11-20 09:29:29,885 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-11-20 09:29:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:29:31,479 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2019-11-20 09:29:31,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-11-20 09:29:31,480 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 60 [2019-11-20 09:29:31,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:29:31,481 INFO L225 Difference]: With dead ends: 179 [2019-11-20 09:29:31,481 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 09:29:31,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7016 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1711, Invalid=15059, Unknown=0, NotChecked=0, Total=16770 [2019-11-20 09:29:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 09:29:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2019-11-20 09:29:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 09:29:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2019-11-20 09:29:31,512 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 60 [2019-11-20 09:29:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:29:31,512 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2019-11-20 09:29:31,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 104 states. [2019-11-20 09:29:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2019-11-20 09:29:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-20 09:29:31,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:29:31,514 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:29:31,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:31,718 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:29:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:29:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1660652863, now seen corresponding path program 10 times [2019-11-20 09:29:31,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:29:31,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330296362] [2019-11-20 09:29:31,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:29:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:29:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-20 09:29:31,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330296362] [2019-11-20 09:29:31,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625744908] [2019-11-20 09:29:31,966 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:32,040 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 09:29:32,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:29:32,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 09:29:32,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:29:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 71 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-20 09:29:32,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:29:32,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2019-11-20 09:29:32,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591640750] [2019-11-20 09:29:32,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 09:29:32,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:29:32,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 09:29:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 09:29:32,373 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 34 states. [2019-11-20 09:29:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:29:33,492 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2019-11-20 09:29:33,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-20 09:29:33,492 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 61 [2019-11-20 09:29:33,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:29:33,493 INFO L225 Difference]: With dead ends: 162 [2019-11-20 09:29:33,493 INFO L226 Difference]: Without dead ends: 116 [2019-11-20 09:29:33,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=532, Invalid=2660, Unknown=0, NotChecked=0, Total=3192 [2019-11-20 09:29:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-20 09:29:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 91. [2019-11-20 09:29:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-20 09:29:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2019-11-20 09:29:33,517 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 61 [2019-11-20 09:29:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:29:33,517 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2019-11-20 09:29:33,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 09:29:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2019-11-20 09:29:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-20 09:29:33,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:29:33,518 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:29:33,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:33,722 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:29:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:29:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1504710446, now seen corresponding path program 15 times [2019-11-20 09:29:33,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:29:33,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751003654] [2019-11-20 09:29:33,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:29:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:29:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 09:29:33,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751003654] [2019-11-20 09:29:33,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136211172] [2019-11-20 09:29:33,950 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:34,534 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-11-20 09:29:34,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:29:34,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 09:29:34,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:29:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 09:29:34,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:29:34,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2019-11-20 09:29:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813930715] [2019-11-20 09:29:34,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 09:29:34,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:29:34,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 09:29:34,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2019-11-20 09:29:34,707 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 28 states. [2019-11-20 09:29:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:29:35,124 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2019-11-20 09:29:35,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 09:29:35,124 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 62 [2019-11-20 09:29:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:29:35,125 INFO L225 Difference]: With dead ends: 142 [2019-11-20 09:29:35,125 INFO L226 Difference]: Without dead ends: 75 [2019-11-20 09:29:35,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 09:29:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-20 09:29:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2019-11-20 09:29:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-20 09:29:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2019-11-20 09:29:35,142 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 62 [2019-11-20 09:29:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:29:35,142 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2019-11-20 09:29:35,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 09:29:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2019-11-20 09:29:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 09:29:35,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:29:35,143 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:29:35,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:35,344 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:29:35,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:29:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1720016189, now seen corresponding path program 16 times [2019-11-20 09:29:35,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:29:35,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820199433] [2019-11-20 09:29:35,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:29:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:29:37,025 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2019-11-20 09:29:37,350 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2019-11-20 09:29:37,571 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 52 [2019-11-20 09:29:37,739 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2019-11-20 09:29:37,979 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2019-11-20 09:29:38,201 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2019-11-20 09:29:38,369 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2019-11-20 09:29:38,602 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2019-11-20 09:29:38,890 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2019-11-20 09:29:39,140 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2019-11-20 09:29:39,434 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 58 [2019-11-20 09:29:39,717 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 61 [2019-11-20 09:29:39,941 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2019-11-20 09:29:40,235 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 63 [2019-11-20 09:29:40,543 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 66 [2019-11-20 09:29:40,785 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2019-11-20 09:29:41,020 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-11-20 09:29:41,274 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2019-11-20 09:29:41,469 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2019-11-20 09:29:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:29:44,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820199433] [2019-11-20 09:29:44,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342506036] [2019-11-20 09:29:44,248 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:29:44,341 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 09:29:44,341 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:29:44,344 WARN L253 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 117 conjunts are in the unsatisfiable core [2019-11-20 09:29:44,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:29:44,357 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 09:29:44,357 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,365 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:44,368 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 09:29:44,368 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:44,375 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 09:29:44,375 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2019-11-20 09:29:44,437 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 09:29:44,437 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,446 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:44,446 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,447 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-20 09:29:44,607 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:44,607 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 1 case distinctions, treesize of input 34 treesize of output 72 [2019-11-20 09:29:44,608 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,637 INFO L567 ElimStorePlain]: treesize reduction 36, result has 57.1 percent of original size [2019-11-20 09:29:44,637 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:44,637 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:48 [2019-11-20 09:29:44,900 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:44,900 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 138 [2019-11-20 09:29:44,901 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:44,958 INFO L567 ElimStorePlain]: treesize reduction 72, result has 47.1 percent of original size [2019-11-20 09:29:44,958 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 09:29:44,959 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:64 [2019-11-20 09:29:45,195 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:45,195 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 220 [2019-11-20 09:29:45,196 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:45,256 INFO L567 ElimStorePlain]: treesize reduction 108, result has 42.6 percent of original size [2019-11-20 09:29:45,256 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:45,256 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:84, output treesize:80 [2019-11-20 09:29:45,547 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:45,548 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 318 [2019-11-20 09:29:45,548 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:45,627 INFO L567 ElimStorePlain]: treesize reduction 144, result has 40.0 percent of original size [2019-11-20 09:29:45,627 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 09:29:45,627 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:100, output treesize:96 [2019-11-20 09:29:46,028 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-11-20 09:29:46,028 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:46,029 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 432 [2019-11-20 09:29:46,029 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:46,129 INFO L567 ElimStorePlain]: treesize reduction 180, result has 38.4 percent of original size [2019-11-20 09:29:46,130 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:46,130 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:116, output treesize:112 [2019-11-20 09:29:47,147 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-11-20 09:29:47,147 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:47,147 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 562 [2019-11-20 09:29:47,148 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:47,274 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2019-11-20 09:29:47,275 INFO L567 ElimStorePlain]: treesize reduction 216, result has 37.2 percent of original size [2019-11-20 09:29:47,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:47,275 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:132, output treesize:128 [2019-11-20 09:29:57,118 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2019-11-20 09:29:57,118 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:29:57,118 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 708 [2019-11-20 09:29:57,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:29:57,286 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2019-11-20 09:29:57,286 INFO L567 ElimStorePlain]: treesize reduction 252, result has 36.4 percent of original size [2019-11-20 09:29:57,287 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-11-20 09:29:57,287 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:148, output treesize:144 [2019-11-20 09:30:26,629 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-20 09:31:41,500 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 09:31:41,501 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: SMTLIBException [2019-11-20 09:31:41,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:31:41,702 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:100) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 43 more [2019-11-20 09:31:41,705 INFO L168 Benchmark]: Toolchain (without parser) took 256788.17 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 385.9 MB). Free memory was 951.5 MB in the beginning and 1.3 GB in the end (delta: -363.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:41,705 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:31:41,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -203.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:41,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.98 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 09:31:41,706 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:41,710 INFO L168 Benchmark]: RCFGBuilder took 299.09 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:41,710 INFO L168 Benchmark]: TraceAbstraction took 256011.92 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 226.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -184.2 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:31:41,711 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 400.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -203.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.98 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 25.13 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 299.09 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256011.92 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 226.0 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -184.2 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) 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 09:31:43,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:31:43,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:31:43,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:31:43,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:31:43,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:31:43,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:31:43,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:31:43,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:31:43,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:31:43,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:31:43,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:31:43,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:31:43,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:31:43,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:31:43,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:31:43,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:31:43,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:31:43,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:31:43,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:31:43,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:31:43,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:31:43,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:31:43,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:31:43,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:31:43,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:31:43,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:31:43,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:31:43,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:31:43,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:31:43,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:31:43,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:31:43,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:31:43,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:31:43,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:31:43,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:31:43,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:31:43,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:31:43,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:31:43,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:31:43,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:31:43,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 09:31:43,284 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:31:43,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:31:43,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:31:43,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:31:43,286 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:31:43,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:31:43,286 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:31:43,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:31:43,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:31:43,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:31:43,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:31:43,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:31:43,288 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 09:31:43,288 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 09:31:43,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:31:43,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:31:43,289 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:31:43,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:31:43,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:31:43,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:31:43,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:31:43,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:31:43,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:31:43,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:31:43,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:31:43,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:31:43,291 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 09:31:43,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 09:31:43,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:31:43,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 09:31:43,292 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_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 -> 24ab6373c463253c38e077741c124c1beeaf9236 [2019-11-20 09:31:43,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:31:43,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:31:43,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:31:43,635 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:31:43,635 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:31:43,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s4lif.c [2019-11-20 09:31:43,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/6999ca3a3/8a9c0b19237848ec8e47b13d5a285008/FLAG97e9780fa [2019-11-20 09:31:44,082 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:31:44,083 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/sv-benchmarks/c/array-fpi/s4lif.c [2019-11-20 09:31:44,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/6999ca3a3/8a9c0b19237848ec8e47b13d5a285008/FLAG97e9780fa [2019-11-20 09:31:44,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/data/6999ca3a3/8a9c0b19237848ec8e47b13d5a285008 [2019-11-20 09:31:44,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:31:44,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:31:44,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:31:44,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:31:44,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:31:44,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210ce359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44, skipping insertion in model container [2019-11-20 09:31:44,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:31:44,550 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:31:44,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:31:44,770 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:31:44,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:31:44,874 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:31:44,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44 WrapperNode [2019-11-20 09:31:44,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:31:44,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:31:44,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:31:44,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:31:44,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:31:44,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:31:44,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:31:44,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:31:44,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... [2019-11-20 09:31:44,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:31:44,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:31:44,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:31:44,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:31:44,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:31:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:31:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-20 09:31:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 09:31:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 09:31:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:31:45,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:31:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-20 09:31:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:31:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 09:31:45,360 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:31:45,360 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 09:31:45,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:45 BoogieIcfgContainer [2019-11-20 09:31:45,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:31:45,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:31:45,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:31:45,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:31:45,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:44" (1/3) ... [2019-11-20 09:31:45,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bcac26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:45, skipping insertion in model container [2019-11-20 09:31:45,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:44" (2/3) ... [2019-11-20 09:31:45,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bcac26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:45, skipping insertion in model container [2019-11-20 09:31:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:45" (3/3) ... [2019-11-20 09:31:45,368 INFO L109 eAbstractionObserver]: Analyzing ICFG s4lif.c [2019-11-20 09:31:45,377 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:31:45,383 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:31:45,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:31:45,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:31:45,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:31:45,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:31:45,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:31:45,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:31:45,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:31:45,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:31:45,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:31:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 09:31:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:31:45,433 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:45,434 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:45,435 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:45,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1306593900, now seen corresponding path program 1 times [2019-11-20 09:31:45,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:45,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1531838671] [2019-11-20 09:31:45,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:31:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:45,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 09:31:45,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:45,559 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 09:31:45,559 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:45,563 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 09:31:45,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1531838671] [2019-11-20 09:31:45,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:31:45,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 09:31:45,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664996778] [2019-11-20 09:31:45,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 09:31:45,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:45,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 09:31:45,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 09:31:45,584 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-20 09:31:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:45,600 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2019-11-20 09:31:45,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 09:31:45,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-20 09:31:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:45,610 INFO L225 Difference]: With dead ends: 35 [2019-11-20 09:31:45,611 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 09:31:45,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 09:31:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 09:31:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 09:31:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 09:31:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-20 09:31:45,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-11-20 09:31:45,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:45,640 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-20 09:31:45,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 09:31:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-20 09:31:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 09:31:45,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:45,640 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:45,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:45,841 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -875432925, now seen corresponding path program 1 times [2019-11-20 09:31:45,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:45,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1115087890] [2019-11-20 09:31:45,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:31:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:45,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 09:31:45,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:45,950 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 09:31:45,951 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:45,962 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 09:31:45,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1115087890] [2019-11-20 09:31:45,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:31:45,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 09:31:45,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218322047] [2019-11-20 09:31:45,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:31:45,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:45,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:31:45,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:31:45,966 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-20 09:31:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:46,101 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-20 09:31:46,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:31:46,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 09:31:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:46,103 INFO L225 Difference]: With dead ends: 29 [2019-11-20 09:31:46,103 INFO L226 Difference]: Without dead ends: 18 [2019-11-20 09:31:46,104 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 09:31:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-20 09:31:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-20 09:31:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 09:31:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-20 09:31:46,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2019-11-20 09:31:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:46,108 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-20 09:31:46,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:31:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-20 09:31:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 09:31:46,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:46,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:46,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:46,310 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -100050171, now seen corresponding path program 1 times [2019-11-20 09:31:46,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:46,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1892182805] [2019-11-20 09:31:46,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:31:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:46,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 09:31:46,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:46,461 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 09:31:46,461 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:46,565 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 09:31:46,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892182805] [2019-11-20 09:31:46,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:31:46,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-20 09:31:46,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814559944] [2019-11-20 09:31:46,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 09:31:46,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:46,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 09:31:46,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-20 09:31:46,568 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 10 states. [2019-11-20 09:31:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:46,940 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2019-11-20 09:31:46,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 09:31:46,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-11-20 09:31:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:46,942 INFO L225 Difference]: With dead ends: 53 [2019-11-20 09:31:46,942 INFO L226 Difference]: Without dead ends: 43 [2019-11-20 09:31:46,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 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 09:31:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-20 09:31:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2019-11-20 09:31:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 09:31:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-20 09:31:46,962 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 13 [2019-11-20 09:31:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:46,964 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-20 09:31:46,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 09:31:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-20 09:31:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 09:31:46,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:46,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:47,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:47,168 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:47,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1777901324, now seen corresponding path program 1 times [2019-11-20 09:31:47,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:47,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [26966093] [2019-11-20 09:31:47,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/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 09:31:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:47,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 09:31:47,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:47,333 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 09:31:47,334 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,364 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:47,375 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:47,376 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 09:31:47,380 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:31:47,381 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,400 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:47,400 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 09:31:47,401 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:34 [2019-11-20 09:31:47,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:47,440 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 32 treesize of output 34 [2019-11-20 09:31:47,441 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,477 INFO L567 ElimStorePlain]: treesize reduction 4, result has 89.5 percent of original size [2019-11-20 09:31:47,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,478 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:34 [2019-11-20 09:31:47,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:47,632 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:47,633 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 65 [2019-11-20 09:31:47,635 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,706 INFO L567 ElimStorePlain]: treesize reduction 36, result has 50.0 percent of original size [2019-11-20 09:31:47,706 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:47,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:36 [2019-11-20 09:31:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:31:47,796 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:31:48,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26966093] [2019-11-20 09:31:48,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 09:31:48,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2019-11-20 09:31:48,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460830504] [2019-11-20 09:31:48,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 09:31:48,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:48,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 09:31:48,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-11-20 09:31:48,687 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2019-11-20 09:31:49,344 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-11-20 09:31:52,570 WARN L191 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 53 [2019-11-20 09:31:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:53,154 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2019-11-20 09:31:53,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 09:31:53,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-20 09:31:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:53,156 INFO L225 Difference]: With dead ends: 53 [2019-11-20 09:31:53,156 INFO L226 Difference]: Without dead ends: 39 [2019-11-20 09:31:53,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2019-11-20 09:31:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-20 09:31:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-11-20 09:31:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 09:31:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-20 09:31:53,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 18 [2019-11-20 09:31:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:53,170 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-20 09:31:53,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 09:31:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-20 09:31:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 09:31:53,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:53,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:53,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:53,374 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1384874314, now seen corresponding path program 1 times [2019-11-20 09:31:53,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:53,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1159222032] [2019-11-20 09:31:53,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:53,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 09:31:53,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:53,471 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 09:31:53,471 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,476 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:53,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,477 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-20 09:31:53,508 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-20 09:31:53,509 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,511 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:53,511 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,512 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2019-11-20 09:31:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:31:53,519 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:53,575 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-11-20 09:31:53,580 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 24 treesize of output 22 [2019-11-20 09:31:53,581 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,583 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:53,584 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,586 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:53,586 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:53,586 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:7 [2019-11-20 09:31:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 09:31:53,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1159222032] [2019-11-20 09:31:53,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:31:53,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 09:31:53,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758572256] [2019-11-20 09:31:53,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 09:31:53,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:53,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 09:31:53,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 09:31:53,602 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2019-11-20 09:31:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:53,740 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-11-20 09:31:53,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 09:31:53,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 09:31:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:53,742 INFO L225 Difference]: With dead ends: 49 [2019-11-20 09:31:53,742 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 09:31:53,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-20 09:31:53,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 09:31:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-20 09:31:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 09:31:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-20 09:31:53,747 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2019-11-20 09:31:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:53,747 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-20 09:31:53,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 09:31:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-20 09:31:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 09:31:53,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:53,748 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:53,948 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:53,949 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash -2122286649, now seen corresponding path program 1 times [2019-11-20 09:31:53,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:53,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1253298486] [2019-11-20 09:31:53,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:31:54,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 09:31:54,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:31:54,186 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:31:54,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253298486] [2019-11-20 09:31:54,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:31:54,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-20 09:31:54,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459301204] [2019-11-20 09:31:54,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 09:31:54,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 09:31:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:31:54,408 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 16 states. [2019-11-20 09:31:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:54,901 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2019-11-20 09:31:54,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 09:31:54,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2019-11-20 09:31:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:54,903 INFO L225 Difference]: With dead ends: 78 [2019-11-20 09:31:54,903 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 09:31:54,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2019-11-20 09:31:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 09:31:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2019-11-20 09:31:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-20 09:31:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-11-20 09:31:54,912 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 23 [2019-11-20 09:31:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:54,913 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-11-20 09:31:54,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 09:31:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-11-20 09:31:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:31:54,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:54,914 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:55,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:55,114 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 645229449, now seen corresponding path program 2 times [2019-11-20 09:31:55,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:55,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [26082933] [2019-11-20 09:31:55,115 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:55,221 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-20 09:31:55,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490378436] [2019-11-20 09:31:55,221 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:31:55,288 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 09:31:55,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:31:55,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 09:31:55,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:55,314 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 09:31:55,314 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,320 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,321 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,321 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-11-20 09:31:55,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:55,449 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,449 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 1 case distinctions, treesize of input 37 treesize of output 28 [2019-11-20 09:31:55,450 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,467 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,468 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,468 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:18 [2019-11-20 09:31:55,497 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-20 09:31:55,498 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,500 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,500 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,500 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2019-11-20 09:31:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:31:55,511 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:31:55,611 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-11-20 09:31:55,622 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 28 treesize of output 24 [2019-11-20 09:31:55,623 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,625 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,627 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:55,627 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:55,627 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-11-20 09:31:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:31:55,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26082933] [2019-11-20 09:31:55,660 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 09:31:55,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490378436] [2019-11-20 09:31:55,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:31:55,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-11-20 09:31:55,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844416179] [2019-11-20 09:31:55,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 09:31:55,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 09:31:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 09:31:55,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-20 09:31:55,662 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 13 states. [2019-11-20 09:31:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:31:55,947 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2019-11-20 09:31:55,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 09:31:55,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2019-11-20 09:31:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:31:55,948 INFO L225 Difference]: With dead ends: 63 [2019-11-20 09:31:55,948 INFO L226 Difference]: Without dead ends: 34 [2019-11-20 09:31:55,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2019-11-20 09:31:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-20 09:31:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-20 09:31:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 09:31:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-20 09:31:55,954 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 25 [2019-11-20 09:31:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:31:55,954 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-20 09:31:55,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 09:31:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-20 09:31:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 09:31:55,955 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:31:55,955 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:31:56,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:31:56,160 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:31:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:31:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1363538264, now seen corresponding path program 3 times [2019-11-20 09:31:56,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 09:31:56,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [32749515] [2019-11-20 09:31:56,161 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81f5243f-f4bd-4ab7-96b2-9b564e8d2b67/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:31:56,332 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 09:31:56,332 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:31:56,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 09:31:56,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:31:56,349 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 09:31:56,350 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:56,368 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:56,368 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:56,368 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-20 09:31:56,431 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 40 treesize of output 20 [2019-11-20 09:31:56,431 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:56,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:56,458 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:56,458 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:33 [2019-11-20 09:31:56,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:56,752 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:56,752 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 89 [2019-11-20 09:31:56,754 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:56,857 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-11-20 09:31:56,857 INFO L567 ElimStorePlain]: treesize reduction 67, result has 52.5 percent of original size [2019-11-20 09:31:56,858 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:31:56,858 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:115, output treesize:74 [2019-11-20 09:31:57,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,059 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:57,059 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 125 [2019-11-20 09:31:57,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:31:57,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,110 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 09:31:57,125 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:57,126 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 46 [2019-11-20 09:31:57,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 09:31:57,133 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 09:31:57,141 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:31:57,141 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:31:57,221 INFO L567 ElimStorePlain]: treesize reduction 4, result has 89.2 percent of original size [2019-11-20 09:31:57,222 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 09:31:57,222 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:123, output treesize:29 [2019-11-20 09:31:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-20 09:31:57,422 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 09:32:06,326 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-11-20 09:32:08,777 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-20 09:32:09,006 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-11-20 09:32:09,006 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:32:09,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 09:32:09,208 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 379 context size 379 output size 379 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 09:32:09,211 INFO L168 Benchmark]: Toolchain (without parser) took 24693.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 175.6 MB). Free memory was 961.8 MB in the beginning and 902.6 MB in the end (delta: 59.2 MB). Peak memory consumption was 234.8 MB. Max. memory is 11.5 GB. [2019-11-20 09:32:09,211 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:32:09,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -147.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:32:09,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:32:09,212 INFO L168 Benchmark]: Boogie Preprocessor took 29.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:32:09,213 INFO L168 Benchmark]: RCFGBuilder took 413.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:32:09,213 INFO L168 Benchmark]: TraceAbstraction took 23847.50 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 902.6 MB in the end (delta: 174.7 MB). Peak memory consumption was 243.9 MB. Max. memory is 11.5 GB. [2019-11-20 09:32:09,215 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -147.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.92 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 413.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23847.50 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 902.6 MB in the end (delta: 174.7 MB). Peak memory consumption was 243.9 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 379 context size 379 output size 379 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |#memory_int| input size 379 context size 379 output size 379: 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...