./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/hard.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/hard.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 e0f1c45558152fd199606f2551fe8da5ad92b45c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/hard.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 e0f1c45558152fd199606f2551fe8da5ad92b45c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:32:50,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:32:50,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:32:50,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:32:50,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:32:50,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:32:50,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:32:50,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:32:50,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:32:50,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:32:50,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:32:50,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:32:50,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:32:50,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:32:50,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:32:50,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:32:50,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:32:50,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:32:50,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:32:50,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:32:50,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:32:50,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:32:50,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:32:50,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:32:50,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:32:50,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:32:50,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:32:50,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:32:50,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:32:50,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:32:50,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:32:50,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:32:50,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:32:50,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:32:50,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:32:50,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:32:50,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:32:50,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:32:50,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:32:50,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:32:50,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:32:50,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:32:50,439 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:32:50,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:32:50,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:32:50,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:32:50,441 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:32:50,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:32:50,441 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:32:50,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:32:50,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:32:50,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:32:50,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:32:50,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:32:50,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:32:50,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:32:50,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:32:50,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:32:50,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:32:50,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:32:50,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:32:50,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:32:50,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:32:50,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:32:50,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:32:50,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:32:50,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:32:50,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:32:50,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:32:50,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:32:50,447 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_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-15 23:32:50,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:32:50,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:32:50,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:32:50,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:32:50,507 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:32:50,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/hard.c [2019-11-15 23:32:50,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/0eeaccc61/299f772a05474715ab258218d694d9b4/FLAG1e047818e [2019-11-15 23:32:50,957 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:32:50,958 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/sv-benchmarks/c/nla-digbench/hard.c [2019-11-15 23:32:50,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/0eeaccc61/299f772a05474715ab258218d694d9b4/FLAG1e047818e [2019-11-15 23:32:50,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/0eeaccc61/299f772a05474715ab258218d694d9b4 [2019-11-15 23:32:50,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:32:50,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:32:50,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:32:50,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:32:50,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:32:50,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:32:50" (1/1) ... [2019-11-15 23:32:50,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475f995b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:50, skipping insertion in model container [2019-11-15 23:32:50,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:32:50" (1/1) ... [2019-11-15 23:32:50,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:32:51,005 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:32:51,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:32:51,245 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:32:51,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:32:51,274 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:32:51,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51 WrapperNode [2019-11-15 23:32:51,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:32:51,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:32:51,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:32:51,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:32:51,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:32:51,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:32:51,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:32:51,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:32:51,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... [2019-11-15 23:32:51,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:32:51,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:32:51,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:32:51,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:32:51,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:32:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:32:51,610 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:32:51,610 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-15 23:32:51,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:32:51 BoogieIcfgContainer [2019-11-15 23:32:51,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:32:51,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:32:51,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:32:51,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:32:51,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:32:50" (1/3) ... [2019-11-15 23:32:51,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a66f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:32:51, skipping insertion in model container [2019-11-15 23:32:51,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:32:51" (2/3) ... [2019-11-15 23:32:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a66f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:32:51, skipping insertion in model container [2019-11-15 23:32:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:32:51" (3/3) ... [2019-11-15 23:32:51,627 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-15 23:32:51,635 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:32:51,644 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 23:32:51,668 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 23:32:51,705 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:32:51,706 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:32:51,706 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:32:51,706 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:32:51,706 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:32:51,707 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:32:51,707 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:32:51,709 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:32:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-15 23:32:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:32:51,736 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:51,737 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:32:51,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-15 23:32:51,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:51,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556455595] [2019-11-15 23:32:51,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:51,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:51,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:51,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556455595] [2019-11-15 23:32:51,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:32:51,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:32:51,946 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135238021] [2019-11-15 23:32:51,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:32:51,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:32:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:32:51,962 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-15 23:32:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:52,083 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-15 23:32:52,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:32:52,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-15 23:32:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:52,098 INFO L225 Difference]: With dead ends: 92 [2019-11-15 23:32:52,099 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 23:32:52,103 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:32:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 23:32:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-15 23:32:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:32:52,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-15 23:32:52,143 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-15 23:32:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:52,143 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-15 23:32:52,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:32:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-15 23:32:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:32:52,145 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:52,146 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:32:52,147 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-15 23:32:52,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:52,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159957758] [2019-11-15 23:32:52,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:52,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159957758] [2019-11-15 23:32:52,194 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:32:52,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:32:52,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023496569] [2019-11-15 23:32:52,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:32:52,196 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:52,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:32:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:32:52,197 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2019-11-15 23:32:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:52,278 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-15 23:32:52,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:32:52,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-15 23:32:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:52,279 INFO L225 Difference]: With dead ends: 49 [2019-11-15 23:32:52,280 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:32:52,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:32:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:32:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-15 23:32:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:32:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-15 23:32:52,289 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-15 23:32:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:52,290 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-15 23:32:52,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:32:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-15 23:32:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:32:52,291 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:52,291 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:52,292 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-15 23:32:52,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:52,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680033926] [2019-11-15 23:32:52,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:52,329 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:52,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541708904] [2019-11-15 23:32:52,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:52,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:32:52,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:52,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680033926] [2019-11-15 23:32:52,414 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:52,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541708904] [2019-11-15 23:32:52,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:32:52,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:32:52,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400331934] [2019-11-15 23:32:52,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:32:52,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:52,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:32:52,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:32:52,416 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2019-11-15 23:32:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:52,511 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2019-11-15 23:32:52,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:32:52,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 23:32:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:52,512 INFO L225 Difference]: With dead ends: 69 [2019-11-15 23:32:52,513 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:32:52,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:32:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:32:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-11-15 23:32:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-15 23:32:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-11-15 23:32:52,522 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2019-11-15 23:32:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:52,523 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-15 23:32:52,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:32:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-11-15 23:32:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:32:52,524 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:52,524 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:52,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:52,728 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:52,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-15 23:32:52,729 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:52,729 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612264182] [2019-11-15 23:32:52,729 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:52,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:52,749 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:52,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472398111] [2019-11-15 23:32:52,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:52,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:32:52,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:52,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612264182] [2019-11-15 23:32:52,820 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:52,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472398111] [2019-11-15 23:32:52,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:32:52,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:32:52,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999109942] [2019-11-15 23:32:52,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:32:52,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:32:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:32:52,822 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2019-11-15 23:32:52,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:52,901 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-11-15 23:32:52,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:32:52,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 23:32:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:52,902 INFO L225 Difference]: With dead ends: 60 [2019-11-15 23:32:52,902 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 23:32:52,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:32:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 23:32:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-11-15 23:32:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 23:32:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-15 23:32:52,910 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2019-11-15 23:32:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:52,911 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-15 23:32:52,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:32:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-15 23:32:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:32:52,912 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:52,912 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-15 23:32:53,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:53,113 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1240091547, now seen corresponding path program 1 times [2019-11-15 23:32:53,113 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:53,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364445555] [2019-11-15 23:32:53,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:53,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:53,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:53,121 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:53,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588239396] [2019-11-15 23:32:53,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:53,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 23:32:53,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:53,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:53,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364445555] [2019-11-15 23:32:53,201 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:53,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588239396] [2019-11-15 23:32:53,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:53,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-15 23:32:53,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314781058] [2019-11-15 23:32:53,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:32:53,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:53,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:32:53,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:32:53,202 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-15 23:32:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:53,344 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2019-11-15 23:32:53,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:32:53,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-15 23:32:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:53,348 INFO L225 Difference]: With dead ends: 105 [2019-11-15 23:32:53,348 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 23:32:53,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:32:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 23:32:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2019-11-15 23:32:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-15 23:32:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-11-15 23:32:53,357 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2019-11-15 23:32:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:53,359 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2019-11-15 23:32:53,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:32:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2019-11-15 23:32:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:32:53,365 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:53,366 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-15 23:32:53,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:53,569 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:53,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 2 times [2019-11-15 23:32:53,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:53,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306931696] [2019-11-15 23:32:53,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:53,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:53,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:53,579 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:53,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022615173] [2019-11-15 23:32:53,580 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:53,612 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:32:53,612 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:32:53,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 23:32:53,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:53,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:53,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306931696] [2019-11-15 23:32:53,689 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:53,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022615173] [2019-11-15 23:32:53,689 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:53,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 23:32:53,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777183980] [2019-11-15 23:32:53,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:32:53,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:32:53,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:32:53,691 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2019-11-15 23:32:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:53,934 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2019-11-15 23:32:53,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:32:53,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-15 23:32:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:53,937 INFO L225 Difference]: With dead ends: 139 [2019-11-15 23:32:53,937 INFO L226 Difference]: Without dead ends: 102 [2019-11-15 23:32:53,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:32:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-15 23:32:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2019-11-15 23:32:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-15 23:32:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2019-11-15 23:32:53,956 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 22 [2019-11-15 23:32:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:53,956 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2019-11-15 23:32:53,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:32:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2019-11-15 23:32:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 23:32:53,958 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:53,958 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:54,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:54,162 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:54,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-15 23:32:54,163 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:54,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248902769] [2019-11-15 23:32:54,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:54,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:54,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:54,171 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:54,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667092037] [2019-11-15 23:32:54,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:54,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 23:32:54,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:54,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:54,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248902769] [2019-11-15 23:32:54,299 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:54,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667092037] [2019-11-15 23:32:54,300 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:54,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 23:32:54,300 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904756196] [2019-11-15 23:32:54,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:32:54,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:54,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:32:54,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:32:54,302 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 6 states. [2019-11-15 23:32:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:54,482 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2019-11-15 23:32:54,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:32:54,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-15 23:32:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:54,483 INFO L225 Difference]: With dead ends: 99 [2019-11-15 23:32:54,484 INFO L226 Difference]: Without dead ends: 97 [2019-11-15 23:32:54,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:32:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-15 23:32:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2019-11-15 23:32:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-15 23:32:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2019-11-15 23:32:54,496 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 24 [2019-11-15 23:32:54,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:54,496 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2019-11-15 23:32:54,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:32:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2019-11-15 23:32:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:32:54,498 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:54,498 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:54,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:54,711 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-15 23:32:54,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:54,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001054178] [2019-11-15 23:32:54,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:54,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:54,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:54,716 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:54,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770685684] [2019-11-15 23:32:54,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:54,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 23:32:54,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:32:54,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001054178] [2019-11-15 23:32:54,814 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:54,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770685684] [2019-11-15 23:32:54,815 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:54,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 23:32:54,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607346950] [2019-11-15 23:32:54,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:32:54,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:54,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:32:54,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:32:54,816 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 6 states. [2019-11-15 23:32:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:54,964 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2019-11-15 23:32:54,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:32:54,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-15 23:32:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:54,965 INFO L225 Difference]: With dead ends: 120 [2019-11-15 23:32:54,965 INFO L226 Difference]: Without dead ends: 105 [2019-11-15 23:32:54,966 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:32:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-15 23:32:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2019-11-15 23:32:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-15 23:32:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2019-11-15 23:32:54,976 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 29 [2019-11-15 23:32:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:54,977 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2019-11-15 23:32:54,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:32:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2019-11-15 23:32:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:32:54,978 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:54,978 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2019-11-15 23:32:55,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:55,183 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:55,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1363992507, now seen corresponding path program 3 times [2019-11-15 23:32:55,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:55,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248274859] [2019-11-15 23:32:55,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:55,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:55,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:55,191 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:55,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774308380] [2019-11-15 23:32:55,192 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:55,225 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-15 23:32:55,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:32:55,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 23:32:55,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:55,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:55,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-15 23:32:55,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248274859] [2019-11-15 23:32:55,346 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:55,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774308380] [2019-11-15 23:32:55,346 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:55,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-15 23:32:55,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600565256] [2019-11-15 23:32:55,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:32:55,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:55,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:32:55,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:32:55,348 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand 7 states. [2019-11-15 23:32:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:55,642 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2019-11-15 23:32:55,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:32:55,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-15 23:32:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:55,656 INFO L225 Difference]: With dead ends: 113 [2019-11-15 23:32:55,656 INFO L226 Difference]: Without dead ends: 103 [2019-11-15 23:32:55,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:32:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-15 23:32:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-11-15 23:32:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-15 23:32:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2019-11-15 23:32:55,672 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 29 [2019-11-15 23:32:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:55,672 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2019-11-15 23:32:55,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:32:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2019-11-15 23:32:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:32:55,674 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:55,674 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:55,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:55,884 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:55,884 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 2 times [2019-11-15 23:32:55,884 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:55,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491265424] [2019-11-15 23:32:55,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:55,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:55,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:55,891 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:55,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519283649] [2019-11-15 23:32:55,891 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:55,939 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:32:55,939 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:32:55,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-15 23:32:55,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:56,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:56,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491265424] [2019-11-15 23:32:56,018 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:56,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519283649] [2019-11-15 23:32:56,018 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:56,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-15 23:32:56,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830942] [2019-11-15 23:32:56,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:32:56,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:32:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:32:56,020 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2019-11-15 23:32:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:56,284 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2019-11-15 23:32:56,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:32:56,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-11-15 23:32:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:56,285 INFO L225 Difference]: With dead ends: 113 [2019-11-15 23:32:56,285 INFO L226 Difference]: Without dead ends: 111 [2019-11-15 23:32:56,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:32:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-15 23:32:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2019-11-15 23:32:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-15 23:32:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2019-11-15 23:32:56,293 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 31 [2019-11-15 23:32:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:56,295 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2019-11-15 23:32:56,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:32:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2019-11-15 23:32:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:32:56,296 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:56,297 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-15 23:32:56,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:56,497 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:56,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1656121185, now seen corresponding path program 3 times [2019-11-15 23:32:56,498 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:56,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631025394] [2019-11-15 23:32:56,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:56,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:56,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:56,503 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:56,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417380583] [2019-11-15 23:32:56,503 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:56,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 23:32:56,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:32:56,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-15 23:32:56,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:56,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:32:56,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631025394] [2019-11-15 23:32:56,897 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:32:56,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417380583] [2019-11-15 23:32:56,897 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:32:56,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-15 23:32:56,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896968084] [2019-11-15 23:32:56,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:32:56,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:32:56,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:32:56,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:32:56,904 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 9 states. [2019-11-15 23:32:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:32:57,336 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2019-11-15 23:32:57,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:32:57,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-15 23:32:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:32:57,338 INFO L225 Difference]: With dead ends: 115 [2019-11-15 23:32:57,338 INFO L226 Difference]: Without dead ends: 104 [2019-11-15 23:32:57,338 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:32:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-15 23:32:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2019-11-15 23:32:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-15 23:32:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2019-11-15 23:32:57,345 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 37 [2019-11-15 23:32:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:32:57,351 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2019-11-15 23:32:57,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:32:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2019-11-15 23:32:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:32:57,356 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:32:57,356 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-15 23:32:57,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:32:57,569 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:32:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:32:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1263094175, now seen corresponding path program 1 times [2019-11-15 23:32:57,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:32:57,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618762247] [2019-11-15 23:32:57,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:57,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:32:57,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:32:57,583 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:32:57,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904230996] [2019-11-15 23:32:57,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:32:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:32:57,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:32:57,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:32:57,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:32:57,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:33:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:33:00,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618762247] [2019-11-15 23:33:00,112 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:33:00,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904230996] [2019-11-15 23:33:00,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:00,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:33:00,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126402281] [2019-11-15 23:33:00,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:33:00,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:33:00,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:33:00,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:33:00,114 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2019-11-15 23:33:15,981 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-15 23:33:16,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:33:16,183 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) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) 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.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:660) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:684) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) 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:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 30 more [2019-11-15 23:33:16,187 INFO L168 Benchmark]: Toolchain (without parser) took 25210.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 944.7 MB in the beginning and 996.7 MB in the end (delta: -52.0 MB). Peak memory consumption was 165.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:16,187 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:33:16,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -210.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:16,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.21 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. [2019-11-15 23:33:16,188 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 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. [2019-11-15 23:33:16,189 INFO L168 Benchmark]: RCFGBuilder took 281.19 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: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:16,189 INFO L168 Benchmark]: TraceAbstraction took 24572.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 996.7 MB in the end (delta: 135.0 MB). Peak memory consumption was 187.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:33:16,192 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -210.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.21 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 20.80 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. * RCFGBuilder took 281.19 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: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24572.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 996.7 MB in the end (delta: 135.0 MB). Peak memory consumption was 187.9 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) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:33:17,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:33:17,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:33:18,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:33:18,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:33:18,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:33:18,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:33:18,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:33:18,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:33:18,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:33:18,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:33:18,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:33:18,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:33:18,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:33:18,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:33:18,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:33:18,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:33:18,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:33:18,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:33:18,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:33:18,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:33:18,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:33:18,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:33:18,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:33:18,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:33:18,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:33:18,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:33:18,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:33:18,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:33:18,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:33:18,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:33:18,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:33:18,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:33:18,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:33:18,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:33:18,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:33:18,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:33:18,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:33:18,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:33:18,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:33:18,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:33:18,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:33:18,093 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:33:18,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:33:18,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:33:18,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:33:18,104 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:33:18,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:33:18,105 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:33:18,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:33:18,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:33:18,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:33:18,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:33:18,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:33:18,106 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:33:18,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:33:18,107 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:33:18,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:33:18,107 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:33:18,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:33:18,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:33:18,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:33:18,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:33:18,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:33:18,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:33:18,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:33:18,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:33:18,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:33:18,110 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:33:18,110 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:33:18,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:33:18,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:33:18,111 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_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-15 23:33:18,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:33:18,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:33:18,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:33:18,162 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:33:18,162 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:33:18,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/hard.c [2019-11-15 23:33:18,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/5dc75375a/9649b4a6d1c94bc0ad0cce525fc1cb7e/FLAGb52c012c1 [2019-11-15 23:33:18,619 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:33:18,620 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/sv-benchmarks/c/nla-digbench/hard.c [2019-11-15 23:33:18,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/5dc75375a/9649b4a6d1c94bc0ad0cce525fc1cb7e/FLAGb52c012c1 [2019-11-15 23:33:18,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/data/5dc75375a/9649b4a6d1c94bc0ad0cce525fc1cb7e [2019-11-15 23:33:18,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:33:18,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:33:18,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:18,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:33:18,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:33:18,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:18,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0063af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18, skipping insertion in model container [2019-11-15 23:33:18,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:18,658 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:33:18,675 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:33:18,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:18,868 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:33:18,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:33:18,908 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:33:18,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18 WrapperNode [2019-11-15 23:33:18,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:33:18,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:18,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:33:18,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:33:18,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:18,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:33:19,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:33:19,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:33:19,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:33:19,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... [2019-11-15 23:33:19,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:33:19,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:33:19,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:33:19,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:33:19,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:33:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:33:19,423 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:33:19,423 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-15 23:33:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:19 BoogieIcfgContainer [2019-11-15 23:33:19,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:33:19,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:33:19,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:33:19,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:33:19,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:33:18" (1/3) ... [2019-11-15 23:33:19,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa51e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:19, skipping insertion in model container [2019-11-15 23:33:19,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:33:18" (2/3) ... [2019-11-15 23:33:19,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa51e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:33:19, skipping insertion in model container [2019-11-15 23:33:19,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:19" (3/3) ... [2019-11-15 23:33:19,431 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-15 23:33:19,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:33:19,444 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-15 23:33:19,451 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-15 23:33:19,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:33:19,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:33:19,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:33:19,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:33:19,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:33:19,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:33:19,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:33:19,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:33:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-15 23:33:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:33:19,490 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:19,491 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:33:19,493 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-15 23:33:19,505 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:19,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1689450081] [2019-11-15 23:33:19,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:19,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:33:19,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:19,593 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:19,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689450081] [2019-11-15 23:33:19,614 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:19,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:33:19,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588734835] [2019-11-15 23:33:19,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:33:19,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:19,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:33:19,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:33:19,628 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2019-11-15 23:33:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:19,882 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-15 23:33:19,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:33:19,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-15 23:33:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:19,894 INFO L225 Difference]: With dead ends: 92 [2019-11-15 23:33:19,895 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 23:33:19,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:33:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 23:33:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-15 23:33:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:33:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-15 23:33:19,946 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-15 23:33:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:19,946 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-15 23:33:19,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:33:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-15 23:33:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 23:33:19,947 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:19,947 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 23:33:20,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:33:20,150 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-15 23:33:20,150 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:20,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [27534649] [2019-11-15 23:33:20,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:20,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:33:20,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:20,196 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:20,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [27534649] [2019-11-15 23:33:20,209 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:20,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:33:20,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474605862] [2019-11-15 23:33:20,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:33:20,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:20,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:33:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:33:20,211 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2019-11-15 23:33:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:20,396 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-15 23:33:20,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:33:20,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-15 23:33:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:20,399 INFO L225 Difference]: With dead ends: 49 [2019-11-15 23:33:20,399 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:33:20,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:33:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:33:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-15 23:33:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:33:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-15 23:33:20,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-15 23:33:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:20,408 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-15 23:33:20,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:33:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-15 23:33:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:33:20,409 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:20,410 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:20,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:33:20,622 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:20,623 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-15 23:33:20,623 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:20,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [855136509] [2019-11-15 23:33:20,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:20,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:33:20,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:20,735 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:20,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [855136509] [2019-11-15 23:33:20,828 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:20,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-15 23:33:20,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032943267] [2019-11-15 23:33:20,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:33:20,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:20,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:33:20,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:33:20,830 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2019-11-15 23:33:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:23,595 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2019-11-15 23:33:23,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:33:23,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-15 23:33:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:23,597 INFO L225 Difference]: With dead ends: 85 [2019-11-15 23:33:23,597 INFO L226 Difference]: Without dead ends: 63 [2019-11-15 23:33:23,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:33:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-15 23:33:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2019-11-15 23:33:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 23:33:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-11-15 23:33:23,611 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 8 [2019-11-15 23:33:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:23,612 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2019-11-15 23:33:23,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:33:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2019-11-15 23:33:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:33:23,613 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:23,613 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:23,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:33:23,823 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:23,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-15 23:33:23,824 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:23,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2113489725] [2019-11-15 23:33:23,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:23,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:33:23,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:23,952 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:24,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2113489725] [2019-11-15 23:33:24,013 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:33:24,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:33:24,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946046472] [2019-11-15 23:33:24,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:33:24,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:33:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:33:24,014 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 5 states. [2019-11-15 23:33:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:24,246 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2019-11-15 23:33:24,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:33:24,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-15 23:33:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:24,248 INFO L225 Difference]: With dead ends: 72 [2019-11-15 23:33:24,248 INFO L226 Difference]: Without dead ends: 61 [2019-11-15 23:33:24,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:33:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-15 23:33:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2019-11-15 23:33:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-15 23:33:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2019-11-15 23:33:24,258 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 11 [2019-11-15 23:33:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:24,259 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2019-11-15 23:33:24,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:33:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2019-11-15 23:33:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:33:24,260 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:24,260 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-15 23:33:24,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:33:24,461 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 1 times [2019-11-15 23:33:24,462 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:24,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1587169134] [2019-11-15 23:33:24,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:24,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:33:24,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:24,703 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 2 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:27,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1587169134] [2019-11-15 23:33:27,099 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:33:27,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-15 23:33:27,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042627117] [2019-11-15 23:33:27,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:33:27,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:27,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:33:27,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2019-11-15 23:33:27,101 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 10 states. [2019-11-15 23:33:30,597 WARN L191 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 19 [2019-11-15 23:33:32,893 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 23:33:35,230 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 18 [2019-11-15 23:33:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:33:38,943 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2019-11-15 23:33:38,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-15 23:33:38,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-15 23:33:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:33:38,945 INFO L225 Difference]: With dead ends: 112 [2019-11-15 23:33:38,945 INFO L226 Difference]: Without dead ends: 98 [2019-11-15 23:33:38,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=142, Invalid=277, Unknown=1, NotChecked=0, Total=420 [2019-11-15 23:33:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-15 23:33:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 46. [2019-11-15 23:33:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-15 23:33:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-15 23:33:38,956 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2019-11-15 23:33:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:33:38,957 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-15 23:33:38,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:33:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-15 23:33:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 23:33:38,958 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:33:38,958 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:33:39,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:33:39,161 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:33:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:33:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-15 23:33:39,162 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:33:39,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1451509266] [2019-11-15 23:33:39,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:33:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:33:39,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-15 23:33:39,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:33:39,806 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-15 23:33:39,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:33:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:40,348 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:33:42,874 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-15 23:33:44,457 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-15 23:33:46,052 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-15 23:33:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:33:46,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1451509266] [2019-11-15 23:33:46,057 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:33:46,057 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-11-15 23:33:46,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155247545] [2019-11-15 23:33:46,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 23:33:46,058 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:33:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 23:33:46,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-15 23:33:46,059 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 14 states. [2019-11-15 23:33:49,615 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-15 23:33:51,245 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-15 23:33:53,014 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-11-15 23:33:54,248 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-15 23:34:00,603 WARN L191 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 43 [2019-11-15 23:34:06,443 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 34 [2019-11-15 23:34:23,858 WARN L191 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 38 [2019-11-15 23:34:26,636 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-15 23:34:32,791 WARN L191 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 42 [2019-11-15 23:34:37,136 WARN L191 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-11-15 23:34:45,856 WARN L191 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-15 23:34:48,676 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-15 23:34:54,023 WARN L191 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-11-15 23:34:55,821 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-15 23:34:57,600 WARN L191 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-15 23:35:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:35:00,089 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2019-11-15 23:35:00,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-15 23:35:00,108 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2019-11-15 23:35:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:35:00,109 INFO L225 Difference]: With dead ends: 153 [2019-11-15 23:35:00,109 INFO L226 Difference]: Without dead ends: 127 [2019-11-15 23:35:00,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 23:35:00,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-15 23:35:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 69. [2019-11-15 23:35:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-15 23:35:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2019-11-15 23:35:00,126 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 24 [2019-11-15 23:35:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:35:00,126 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2019-11-15 23:35:00,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 23:35:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2019-11-15 23:35:00,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:35:00,128 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:00,128 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:35:00,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:00,331 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-15 23:35:00,332 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:35:00,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1831860430] [2019-11-15 23:35:00,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:35:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:35:00,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:35:00,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:35:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:35:00,668 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:35:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 23:35:01,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831860430] [2019-11-15 23:35:01,145 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:35:01,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 23:35:01,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497921587] [2019-11-15 23:35:01,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:35:01,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:35:01,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:35:01,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:35:01,146 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 9 states. [2019-11-15 23:35:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:35:01,821 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2019-11-15 23:35:01,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:35:01,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2019-11-15 23:35:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:35:01,822 INFO L225 Difference]: With dead ends: 93 [2019-11-15 23:35:01,822 INFO L226 Difference]: Without dead ends: 91 [2019-11-15 23:35:01,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:35:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-15 23:35:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2019-11-15 23:35:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-15 23:35:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2019-11-15 23:35:01,832 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 29 [2019-11-15 23:35:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:35:01,833 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2019-11-15 23:35:01,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:35:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2019-11-15 23:35:01,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 23:35:01,834 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:01,834 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-15 23:35:02,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:02,039 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1904897800, now seen corresponding path program 2 times [2019-11-15 23:35:02,039 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:35:02,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1799036122] [2019-11-15 23:35:02,040 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:02,293 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:35:02,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:35:02,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:35:02,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:35:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:35:02,315 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:35:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:35:02,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1799036122] [2019-11-15 23:35:02,585 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:35:02,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 5 [2019-11-15 23:35:02,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136010344] [2019-11-15 23:35:02,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:35:02,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:35:02,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:35:02,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:35:02,586 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand 6 states. [2019-11-15 23:35:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:35:02,854 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2019-11-15 23:35:02,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:35:02,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-15 23:35:02,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:35:02,855 INFO L225 Difference]: With dead ends: 93 [2019-11-15 23:35:02,855 INFO L226 Difference]: Without dead ends: 69 [2019-11-15 23:35:02,856 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:35:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-15 23:35:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-15 23:35:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-15 23:35:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2019-11-15 23:35:02,865 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2019-11-15 23:35:02,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:35:02,865 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2019-11-15 23:35:02,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:35:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2019-11-15 23:35:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:35:02,867 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:02,867 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:35:03,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:03,075 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:03,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1028271282, now seen corresponding path program 1 times [2019-11-15 23:35:03,080 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:35:03,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1959746628] [2019-11-15 23:35:03,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/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 [2019-11-15 23:35:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:35:03,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:35:03,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:35:04,135 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-15 23:35:04,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:35:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:35:04,467 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:35:06,184 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-11-15 23:35:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:35:06,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959746628] [2019-11-15 23:35:06,880 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:35:06,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-15 23:35:06,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429966623] [2019-11-15 23:35:06,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:35:06,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:35:06,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:35:06,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:35:06,881 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 12 states. [2019-11-15 23:35:10,645 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2019-11-15 23:35:12,311 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-11-15 23:35:17,043 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-15 23:35:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:35:17,105 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2019-11-15 23:35:17,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 23:35:17,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2019-11-15 23:35:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:35:17,106 INFO L225 Difference]: With dead ends: 75 [2019-11-15 23:35:17,107 INFO L226 Difference]: Without dead ends: 58 [2019-11-15 23:35:17,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2019-11-15 23:35:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-15 23:35:17,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-15 23:35:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-15 23:35:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2019-11-15 23:35:17,117 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 31 [2019-11-15 23:35:17,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:35:17,118 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2019-11-15 23:35:17,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:35:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2019-11-15 23:35:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:35:17,119 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:35:17,119 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:35:17,322 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:17,322 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:35:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:35:17,322 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 3 times [2019-11-15 23:35:17,322 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:35:17,323 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1202513033] [2019-11-15 23:35:17,323 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:17,649 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 23:35:17,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-15 23:35:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:35:17,907 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:35:17,907 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:35:18,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:35:18,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:35:18 BoogieIcfgContainer [2019-11-15 23:35:18,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:35:18,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:35:18,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:35:18,132 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:35:18,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:33:19" (3/4) ... [2019-11-15 23:35:18,134 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:35:18,191 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1b81ae2c-6de2-4295-958e-bcb3987d02aa/bin/uautomizer/witness.graphml [2019-11-15 23:35:18,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:35:18,193 INFO L168 Benchmark]: Toolchain (without parser) took 119549.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 953.7 MB in the beginning and 928.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 238.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,193 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:35:18,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.68 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -215.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,194 INFO L168 Benchmark]: Boogie Preprocessor took 41.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,195 INFO L168 Benchmark]: RCFGBuilder took 379.76 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,195 INFO L168 Benchmark]: TraceAbstraction took 118706.72 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 935.6 MB in the end (delta: 195.8 MB). Peak memory consumption was 247.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,196 INFO L168 Benchmark]: Witness Printer took 59.51 ms. Allocated memory is still 1.2 GB. Free memory was 935.6 MB in the beginning and 928.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:35:18,198 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.68 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -215.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 379.76 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 118706.72 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 935.6 MB in the end (delta: 195.8 MB). Peak memory consumption was 247.2 MB. Max. memory is 11.5 GB. * Witness Printer took 59.51 ms. Allocated memory is still 1.2 GB. Free memory was 935.6 MB in the beginning and 928.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int A, B; [L19] int r, d, p, q; [L20] A = __VERIFIER_nondet_int() [L21] B = __VERIFIER_nondet_int() [L24] r = A [L25] d = B [L26] p = 1 [L27] q = 0 [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND FALSE !(!(r >= d)) [L35] d = 2 * d [L36] p = 2 * p [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND FALSE !(!(r >= d)) [L35] d = 2 * d [L36] p = 2 * p [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND TRUE !(r >= d) [L39] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L43] COND FALSE !(!(p != 1)) [L45] d = d / 2 [L46] p = p / 2 [L47] COND TRUE r >= d [L48] r = r - d [L49] q = q + p [L39] COND TRUE 1 [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 7 error locations. Result: UNSAFE, OverallTime: 118.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 100.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 217 SDtfs, 504 SDslu, 557 SDs, 0 SdLazy, 831 SolverSat, 356 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 46.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 65.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 179 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 312 ConstructedInterpolants, 21 QuantifiedInterpolants, 68288 SizeOfPredicates, 47 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 34/138 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...