./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 113c95658bee622e60ec4feab3ce860417d50ea7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:30,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:30,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:30,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:30,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:30,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:30,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:30,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:30,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:30,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:30,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:30,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:30,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:30,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:30,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:30,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:30,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:30,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:30,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:30,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:30,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:30,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:30,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:30,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:30,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:30,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:30,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:30,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:30,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:30,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:30,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:30,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:30,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:30,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:30,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:30,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:30,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:30,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:30,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:30,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:30,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:30,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:19:30,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:30,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:30,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:30,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:30,437 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:30,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:30,437 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:30,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:30,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:30,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:30,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:30,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:30,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:30,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:30,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:30,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:30,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:30,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:30,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:30,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:30,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:30,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:30,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:30,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:30,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:30,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:30,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:30,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:30,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:30,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 113c95658bee622e60ec4feab3ce860417d50ea7 [2020-11-28 03:19:30,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:30,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:30,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:30,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:30,715 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:30,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2020-11-28 03:19:30,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/data/9221d7d41/fa1deafe24d4417c9ba91e745f383144/FLAG3dec0fd2c [2020-11-28 03:19:31,205 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:31,206 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2020-11-28 03:19:31,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/data/9221d7d41/fa1deafe24d4417c9ba91e745f383144/FLAG3dec0fd2c [2020-11-28 03:19:31,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/data/9221d7d41/fa1deafe24d4417c9ba91e745f383144 [2020-11-28 03:19:31,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:31,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:31,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:31,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:31,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:31,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e161f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31, skipping insertion in model container [2020-11-28 03:19:31,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:31,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:31,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:31,805 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:31,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:31,836 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:31,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31 WrapperNode [2020-11-28 03:19:31,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:31,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:31,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:31,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:31,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:31,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:31,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:31,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:31,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... [2020-11-28 03:19:31,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:31,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:31,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:31,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:31,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:31,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:32,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:32,331 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 03:19:32,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:32 BoogieIcfgContainer [2020-11-28 03:19:32,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:32,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:32,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:32,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:32,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:31" (1/3) ... [2020-11-28 03:19:32,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c0941b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:32, skipping insertion in model container [2020-11-28 03:19:32,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:31" (2/3) ... [2020-11-28 03:19:32,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c0941b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:32, skipping insertion in model container [2020-11-28 03:19:32,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:32" (3/3) ... [2020-11-28 03:19:32,340 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2020-11-28 03:19:32,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:32,354 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:19:32,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:19:32,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:32,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:32,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:32,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:32,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:32,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:32,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:32,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:19:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:19:32,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:32,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:32,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:32,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-28 03:19:32,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:32,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637291137] [2020-11-28 03:19:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:32,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637291137] [2020-11-28 03:19:32,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:32,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:19:32,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950240791] [2020-11-28 03:19:32,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:32,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:32,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:32,619 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-28 03:19:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:32,642 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-11-28 03:19:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:32,644 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:19:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:32,653 INFO L225 Difference]: With dead ends: 75 [2020-11-28 03:19:32,653 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:19:32,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:19:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:19:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:19:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-28 03:19:32,701 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-11-28 03:19:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:32,701 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-28 03:19:32,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-28 03:19:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:19:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:32,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:32,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:32,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-28 03:19:32,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:32,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135529833] [2020-11-28 03:19:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:32,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135529833] [2020-11-28 03:19:32,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:32,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:32,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16894235] [2020-11-28 03:19:32,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:32,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:32,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:32,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:32,812 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-11-28 03:19:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:32,890 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-11-28 03:19:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:32,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:19:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:32,892 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:19:32,892 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:19:32,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:19:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-28 03:19:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:19:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-28 03:19:32,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-11-28 03:19:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:32,925 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-28 03:19:32,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-28 03:19:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:19:32,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:32,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:32,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:19:32,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:32,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-28 03:19:32,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:32,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583468615] [2020-11-28 03:19:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:33,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583468615] [2020-11-28 03:19:33,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:33,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:33,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473884196] [2020-11-28 03:19:33,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:33,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:33,035 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-11-28 03:19:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:33,150 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-28 03:19:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:33,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:19:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:33,153 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:19:33,153 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:19:33,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:19:33,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-11-28 03:19:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:19:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-28 03:19:33,159 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-11-28 03:19:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:33,160 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-28 03:19:33,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-28 03:19:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:33,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:33,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:33,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:19:33,167 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:33,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-28 03:19:33,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:33,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100015964] [2020-11-28 03:19:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:33,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:33,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713392606] [2020-11-28 03:19:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:33,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:19:33,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:33,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100015964] [2020-11-28 03:19:33,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:33,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713392606] [2020-11-28 03:19:33,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:33,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:33,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643740349] [2020-11-28 03:19:33,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:33,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:33,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:33,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:33,327 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-11-28 03:19:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:33,481 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-11-28 03:19:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:33,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:19:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:33,482 INFO L225 Difference]: With dead ends: 72 [2020-11-28 03:19:33,482 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:19:33,483 INFO L677 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 [2020-11-28 03:19:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:19:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-28 03:19:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:19:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-11-28 03:19:33,492 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-11-28 03:19:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:33,492 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-11-28 03:19:33,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-11-28 03:19:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:19:33,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:33,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:33,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:33,717 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:33,717 INFO L82 PathProgramCache]: Analyzing trace with hash -13373041, now seen corresponding path program 1 times [2020-11-28 03:19:33,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:33,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84077575] [2020-11-28 03:19:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:33,734 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:33,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463489168] [2020-11-28 03:19:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:33,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:19:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:33,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84077575] [2020-11-28 03:19:33,865 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:33,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463489168] [2020-11-28 03:19:33,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:33,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:33,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272219740] [2020-11-28 03:19:33,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:33,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:33,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:33,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:33,867 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2020-11-28 03:19:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:33,981 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-11-28 03:19:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:19:33,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:19:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:33,985 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:19:33,985 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:19:33,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:19:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-11-28 03:19:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:19:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-28 03:19:33,991 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-28 03:19:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:33,991 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-28 03:19:33,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-28 03:19:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:19:33,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:33,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:34,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:34,208 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-28 03:19:34,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:34,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459474568] [2020-11-28 03:19:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:34,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:34,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492856767] [2020-11-28 03:19:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:34,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:19:34,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:34,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459474568] [2020-11-28 03:19:34,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:34,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492856767] [2020-11-28 03:19:34,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:34,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:19:34,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666861611] [2020-11-28 03:19:34,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:19:34,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:34,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:19:34,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:34,313 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-28 03:19:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:34,481 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2020-11-28 03:19:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:19:34,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:19:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:34,484 INFO L225 Difference]: With dead ends: 108 [2020-11-28 03:19:34,484 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:19:34,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:19:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-11-28 03:19:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:19:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-11-28 03:19:34,500 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2020-11-28 03:19:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:34,501 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-11-28 03:19:34,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:19:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-11-28 03:19:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:19:34,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:34,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:34,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:34,704 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:34,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-28 03:19:34,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:34,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261563775] [2020-11-28 03:19:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:34,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:34,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840033492] [2020-11-28 03:19:34,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:34,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:19:34,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:19:34,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:34,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261563775] [2020-11-28 03:19:34,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:34,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840033492] [2020-11-28 03:19:34,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:34,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:19:34,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488621044] [2020-11-28 03:19:34,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:34,876 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-11-28 03:19:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:35,138 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2020-11-28 03:19:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:19:35,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 03:19:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:35,140 INFO L225 Difference]: With dead ends: 142 [2020-11-28 03:19:35,140 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:19:35,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:19:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:19:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2020-11-28 03:19:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:19:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-11-28 03:19:35,153 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 25 [2020-11-28 03:19:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:35,153 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-11-28 03:19:35,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-11-28 03:19:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:19:35,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:35,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:35,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:35,355 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1085203663, now seen corresponding path program 1 times [2020-11-28 03:19:35,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:35,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640532413] [2020-11-28 03:19:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:35,366 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:35,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668571551] [2020-11-28 03:19:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:35,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 03:19:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640532413] [2020-11-28 03:19:35,550 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668571551] [2020-11-28 03:19:35,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:35,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:19:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107721954] [2020-11-28 03:19:35,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:35,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:35,552 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2020-11-28 03:19:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:35,779 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-11-28 03:19:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:19:35,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-28 03:19:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:35,781 INFO L225 Difference]: With dead ends: 102 [2020-11-28 03:19:35,781 INFO L226 Difference]: Without dead ends: 100 [2020-11-28 03:19:35,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:19:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-28 03:19:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2020-11-28 03:19:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 03:19:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-11-28 03:19:35,793 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2020-11-28 03:19:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:35,794 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-11-28 03:19:35,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-11-28 03:19:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:19:35,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:35,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:35,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:35,996 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1129109896, now seen corresponding path program 1 times [2020-11-28 03:19:35,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:35,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012490470] [2020-11-28 03:19:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:36,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:36,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154594959] [2020-11-28 03:19:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:36,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:19:36,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:36,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012490470] [2020-11-28 03:19:36,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:36,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154594959] [2020-11-28 03:19:36,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:36,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:19:36,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276246099] [2020-11-28 03:19:36,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:19:36,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:36,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:19:36,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:36,189 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 7 states. [2020-11-28 03:19:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:36,449 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-11-28 03:19:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:19:36,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-28 03:19:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:36,451 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:19:36,451 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:19:36,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:19:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:19:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-28 03:19:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:19:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-11-28 03:19:36,463 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2020-11-28 03:19:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:36,463 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-11-28 03:19:36,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:19:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-11-28 03:19:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:19:36,469 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:36,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:36,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:36,696 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:36,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:36,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 3 times [2020-11-28 03:19:36,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:36,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789619274] [2020-11-28 03:19:36,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:36,713 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:36,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80655498] [2020-11-28 03:19:36,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:36,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:19:36,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:36,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:19:36,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:36,824 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:36,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:19:36,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789619274] [2020-11-28 03:19:36,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:36,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80655498] [2020-11-28 03:19:36,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:36,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:19:36,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462438389] [2020-11-28 03:19:36,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:19:36,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:19:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:36,919 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 7 states. [2020-11-28 03:19:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:37,154 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2020-11-28 03:19:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:19:37,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-28 03:19:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:37,156 INFO L225 Difference]: With dead ends: 96 [2020-11-28 03:19:37,156 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:19:37,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:19:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:19:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-28 03:19:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 03:19:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-11-28 03:19:37,170 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2020-11-28 03:19:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:37,170 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-11-28 03:19:37,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:19:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-11-28 03:19:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:19:37,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:37,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:37,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:19:37,384 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1042348646, now seen corresponding path program 2 times [2020-11-28 03:19:37,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:37,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659138500] [2020-11-28 03:19:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:37,391 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:37,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203913602] [2020-11-28 03:19:37,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:37,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:19:37,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:37,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 03:19:37,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:37,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659138500] [2020-11-28 03:19:37,594 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203913602] [2020-11-28 03:19:37,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:37,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:19:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480163729] [2020-11-28 03:19:37,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:19:37,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:37,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:19:37,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:37,605 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 7 states. [2020-11-28 03:19:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:37,907 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-11-28 03:19:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:19:37,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-28 03:19:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:37,909 INFO L225 Difference]: With dead ends: 99 [2020-11-28 03:19:37,909 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:19:37,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:19:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:19:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-28 03:19:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 03:19:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-28 03:19:37,922 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 34 [2020-11-28 03:19:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:37,922 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-28 03:19:37,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:19:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-28 03:19:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:19:37,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:37,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:38,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 03:19:38,141 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:38,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1894983429, now seen corresponding path program 3 times [2020-11-28 03:19:38,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:38,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841016506] [2020-11-28 03:19:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:38,149 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:38,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600060434] [2020-11-28 03:19:38,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:38,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:19:38,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:38,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 03:19:38,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:38,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:19:38,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:19:38,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:19:38,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:19:38,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,907 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,922 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:38,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:39,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841016506] [2020-11-28 03:19:39,036 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:39,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600060434] [2020-11-28 03:19:39,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:39,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 03:19:39,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850605796] [2020-11-28 03:19:39,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:19:39,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:39,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:19:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:19:39,039 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 11 states. [2020-11-28 03:19:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:39,719 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-28 03:19:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:19:39,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-28 03:19:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:39,720 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:19:39,721 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:19:39,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:19:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:19:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-11-28 03:19:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 03:19:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-28 03:19:39,737 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 40 [2020-11-28 03:19:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:39,737 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-28 03:19:39,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:19:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-28 03:19:39,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:19:39,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:39,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:39,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:39,960 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:39,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1501956419, now seen corresponding path program 1 times [2020-11-28 03:19:39,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:39,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869066430] [2020-11-28 03:19:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:39,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:39,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131367952] [2020-11-28 03:19:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/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 [2020-11-28 03:19:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:40,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:19:40,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:19:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869066430] [2020-11-28 03:19:40,143 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131367952] [2020-11-28 03:19:40,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:40,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:19:40,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307629682] [2020-11-28 03:19:40,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:40,144 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 6 states. [2020-11-28 03:19:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:40,312 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-11-28 03:19:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:19:40,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-11-28 03:19:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:40,313 INFO L225 Difference]: With dead ends: 141 [2020-11-28 03:19:40,313 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:19:40,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:19:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2020-11-28 03:19:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:19:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-11-28 03:19:40,328 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 40 [2020-11-28 03:19:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:40,329 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-11-28 03:19:40,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-11-28 03:19:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:19:40,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:40,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:40,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:40,560 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 265910895, now seen corresponding path program 4 times [2020-11-28 03:19:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:40,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051449458] [2020-11-28 03:19:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:40,587 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:40,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896862571] [2020-11-28 03:19:40,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:40,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:19:40,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:40,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-28 03:19:40,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:40,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051449458] [2020-11-28 03:19:40,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:40,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896862571] [2020-11-28 03:19:40,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:40,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:19:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086636340] [2020-11-28 03:19:40,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:19:40,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:40,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:19:40,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:19:40,790 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-11-28 03:19:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:41,215 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-11-28 03:19:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:19:41,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-11-28 03:19:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:41,218 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:19:41,218 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 03:19:41,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:19:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 03:19:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-11-28 03:19:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:19:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-11-28 03:19:41,234 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 41 [2020-11-28 03:19:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:41,235 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-11-28 03:19:41,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:19:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-11-28 03:19:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:19:41,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:41,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:41,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:19:41,452 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:41,453 INFO L82 PathProgramCache]: Analyzing trace with hash 317576706, now seen corresponding path program 2 times [2020-11-28 03:19:41,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:41,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472625882] [2020-11-28 03:19:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:41,460 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:41,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708534300] [2020-11-28 03:19:41,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:41,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:19:41,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:19:41,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:19:41,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:41,551 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:41,552 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:41,594 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:41,595 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 03:19:41,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472625882] [2020-11-28 03:19:41,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:41,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708534300] [2020-11-28 03:19:41,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:41,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:19:41,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619152247] [2020-11-28 03:19:41,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:19:41,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:41,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:19:41,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:19:41,644 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 9 states. [2020-11-28 03:19:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:41,915 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-28 03:19:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:19:41,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-11-28 03:19:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:41,915 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:19:41,916 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:19:41,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:19:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:19:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:19:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:19:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:19:41,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-28 03:19:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:41,917 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:41,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:19:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:19:41,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:19:42,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:19:42,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:19:42,551 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-11-28 03:19:42,730 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-11-28 03:19:42,914 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-11-28 03:19:43,070 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-28 03:19:43,277 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2020-11-28 03:19:43,450 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-11-28 03:19:43,506 INFO L277 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-11-28 03:19:43,506 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,506 INFO L274 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,507 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,508 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse0 .cse1 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse2 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-28 03:19:43,508 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,508 INFO L270 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse0 .cse1 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse2 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-28 03:19:43,508 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,508 INFO L270 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse4 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4))) [2020-11-28 03:19:43,508 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,508 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~B~0 1))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse3 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse4 .cse5 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (and .cse3 .cse0 .cse4 .cse5 .cse1 .cse2) (and .cse3 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-28 03:19:43,508 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L270 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~B~0 1))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 (= ULTIMATE.start_main_~p~0 2) .cse1 .cse2 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse3 .cse0 .cse4 .cse5 .cse1 .cse2) (and (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse0 .cse4 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) .cse5 (= ULTIMATE.start_main_~d~0 1)) (and .cse3 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,509 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:19:43,510 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1)) (let ((.cse4 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and (= ULTIMATE.start_main_~B~0 1) .cse2 .cse3 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) .cse0 (<= 1 (div .cse4 2)) .cse1 (<= .cse4 ULTIMATE.start_main_~r~0))) (and .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 (= ULTIMATE.start_main_~p~0 2) .cse0 .cse1))) [2020-11-28 03:19:43,510 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:19:43,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:43 BoogieIcfgContainer [2020-11-28 03:19:43,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:43,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:43,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:43,548 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:43,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:32" (3/4) ... [2020-11-28 03:19:43,552 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:19:43,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 03:19:43,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:19:43,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:43,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:43,605 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8455a31e-6ff7-4f69-9b94-f455765fed4e/bin/uautomizer/witness.graphml [2020-11-28 03:19:43,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:43,606 INFO L168 Benchmark]: Toolchain (without parser) took 12009.86 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 86.6 MB in the beginning and 82.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,606 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:43,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.13 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 90.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,608 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:43,608 INFO L168 Benchmark]: RCFGBuilder took 435.29 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 71.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,609 INFO L168 Benchmark]: TraceAbstraction took 11214.04 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 71.4 MB in the beginning and 85.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,609 INFO L168 Benchmark]: Witness Printer took 57.11 ms. Allocated memory is still 163.6 MB. Free memory was 85.8 MB in the beginning and 82.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:43,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.13 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 90.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.29 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 71.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11214.04 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 71.4 MB in the beginning and 85.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. * Witness Printer took 57.11 ms. Allocated memory is still 163.6 MB. Free memory was 85.8 MB in the beginning and 82.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1)) || (((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((B == d && p == 1) && q == 0) && A == r) && d == 1) || (((((((B == 1 && d == p * B) && 1 == cond) && p % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((d == p * B && d == 2) && 1 == cond) && p == 2) && q == 0) && A == r) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((((A == d + r && 1 <= cond) && B == d) && q == p) && p == 1) && d == 1)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && !(0 == cond)) && A == d + r) && B == d) && p == 1) && q == p)) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.7s, OverallIterations: 15, TraceHistogramMax: 4, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 354 SDtfs, 459 SDslu, 775 SDs, 0 SdLazy, 1713 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 294 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 148 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 54 NumberOfFragments, 506 HoareAnnotationTreeSize, 9 FomulaSimplifications, 9176 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1057 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 382 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 367 ConstructedInterpolants, 2 QuantifiedInterpolants, 124641 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1295 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 100/251 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...