./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.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_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 b16d444b17d990870a86defe9950d11248e76627 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:35:34,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:34,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:34,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:34,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:34,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:34,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:34,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:34,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:34,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:34,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:34,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:34,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:34,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:34,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:34,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:34,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:34,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:34,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:34,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:34,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:34,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:34,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:34,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:34,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:34,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:34,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:34,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:34,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:34,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:34,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:34,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:34,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:34,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:34,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:34,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:34,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:34,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:34,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:34,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:34,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:34,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:35:34,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:34,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:34,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:34,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:34,841 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:35:34,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:34,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:35:34,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:34,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:35:34,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:34,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:35:34,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:35:34,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:35:34,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:35:34,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:34,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:34,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:35:34,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:34,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:35:34,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:35:34,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:35:34,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:35:34,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:34,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:35:34,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:35:34,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:35:34,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:35:34,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:35:34,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:35:34,848 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_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b16d444b17d990870a86defe9950d11248e76627 [2020-11-30 00:35:35,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:35,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:35,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:35,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:35,253 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:35,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-30 00:35:35,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/data/4358bd65a/28335879b06f4986b81973c26041016e/FLAG3c683ffc5 [2020-11-30 00:35:35,983 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:35,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2020-11-30 00:35:35,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/data/4358bd65a/28335879b06f4986b81973c26041016e/FLAG3c683ffc5 [2020-11-30 00:35:36,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/data/4358bd65a/28335879b06f4986b81973c26041016e [2020-11-30 00:35:36,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:36,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:36,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:36,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:36,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:36,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a0695c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36, skipping insertion in model container [2020-11-30 00:35:36,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:36,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:36,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:36,679 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:36,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:36,725 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:36,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36 WrapperNode [2020-11-30 00:35:36,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:36,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:36,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:36,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:36,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:36,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:36,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:36,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:36,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... [2020-11-30 00:35:36,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:36,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:36,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:36,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:36,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:35:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:35:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:36,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:37,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:37,438 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-11-30 00:35:37,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:37 BoogieIcfgContainer [2020-11-30 00:35:37,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:37,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:35:37,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:35:37,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:35:37,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:35:36" (1/3) ... [2020-11-30 00:35:37,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c769af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:37, skipping insertion in model container [2020-11-30 00:35:37,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:36" (2/3) ... [2020-11-30 00:35:37,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c769af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:37, skipping insertion in model container [2020-11-30 00:35:37,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:37" (3/3) ... [2020-11-30 00:35:37,451 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.c [2020-11-30 00:35:37,466 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:35:37,475 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 00:35:37,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 00:35:37,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:35:37,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:35:37,516 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:35:37,516 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:35:37,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:35:37,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:35:37,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:35:37,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:35:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-30 00:35:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:35:37,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:37,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:37,547 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]=== [2020-11-30 00:35:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:37,555 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-30 00:35:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896203932] [2020-11-30 00:35:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:37,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896203932] [2020-11-30 00:35:37,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:37,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:35:37,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290049620] [2020-11-30 00:35:37,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:35:37,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:35:37,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:35:37,761 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-11-30 00:35:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:37,788 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-11-30 00:35:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:35:37,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:35:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:37,802 INFO L225 Difference]: With dead ends: 85 [2020-11-30 00:35:37,803 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:35:37,807 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 [2020-11-30 00:35:37,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:35:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-30 00:35:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:35:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-30 00:35:37,856 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-11-30 00:35:37,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:37,856 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-30 00:35:37,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:35:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-30 00:35:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:35:37,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:37,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:37,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:35:37,859 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]=== [2020-11-30 00:35:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:37,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-30 00:35:37,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:37,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674521553] [2020-11-30 00:35:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:37,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:37,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724371111] [2020-11-30 00:35:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:35:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:38,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674521553] [2020-11-30 00:35:38,101 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:38,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724371111] [2020-11-30 00:35:38,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:38,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:35:38,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178471211] [2020-11-30 00:35:38,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:35:38,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:35:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:35:38,105 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 4 states. [2020-11-30 00:35:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:38,363 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-30 00:35:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:35:38,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:35:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:38,367 INFO L225 Difference]: With dead ends: 70 [2020-11-30 00:35:38,367 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:35:38,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:35:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-30 00:35:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 00:35:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-30 00:35:38,384 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 13 [2020-11-30 00:35:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:38,384 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-30 00:35:38,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:35:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-30 00:35:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:35:38,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:38,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:38,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:35:38,602 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]=== [2020-11-30 00:35:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:38,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1454273793, now seen corresponding path program 1 times [2020-11-30 00:35:38,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:38,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763230056] [2020-11-30 00:35:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:38,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:38,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936441871] [2020-11-30 00:35:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:38,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 00:35:38,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:38,746 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:38,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:38,804 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:38,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:38,874 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:38,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:38,968 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:38,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:39,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763230056] [2020-11-30 00:35:39,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:39,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936441871] [2020-11-30 00:35:39,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:39,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-30 00:35:39,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302316917] [2020-11-30 00:35:39,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:35:39,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:35:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:35:39,127 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 12 states. [2020-11-30 00:35:39,471 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2020-11-30 00:35:39,715 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2020-11-30 00:35:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:39,988 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-11-30 00:35:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:35:39,989 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-30 00:35:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:39,991 INFO L225 Difference]: With dead ends: 83 [2020-11-30 00:35:39,991 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 00:35:39,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:35:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 00:35:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2020-11-30 00:35:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 00:35:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-11-30 00:35:40,018 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 15 [2020-11-30 00:35:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:40,019 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-11-30 00:35:40,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:35:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-11-30 00:35:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:35:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:40,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:40,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:40,245 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]=== [2020-11-30 00:35:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1692931460, now seen corresponding path program 1 times [2020-11-30 00:35:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249315980] [2020-11-30 00:35:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:40,283 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:40,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364292986] [2020-11-30 00:35:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:40,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-30 00:35:40,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:40,397 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:40,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:40,449 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:40,450 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:40,508 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:40,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:40,602 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:40,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:40,926 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-30 00:35:40,931 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-11-30 00:35:40,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:40,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249315980] [2020-11-30 00:35:40,990 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:40,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364292986] [2020-11-30 00:35:40,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:40,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-30 00:35:40,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726438510] [2020-11-30 00:35:40,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 00:35:40,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 00:35:40,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:35:40,997 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 13 states. [2020-11-30 00:35:41,374 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 11 [2020-11-30 00:35:41,506 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2020-11-30 00:35:41,697 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2020-11-30 00:35:41,852 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-11-30 00:35:42,031 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 13 [2020-11-30 00:35:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:42,160 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-11-30 00:35:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:35:42,160 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-30 00:35:42,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:42,162 INFO L225 Difference]: With dead ends: 94 [2020-11-30 00:35:42,162 INFO L226 Difference]: Without dead ends: 86 [2020-11-30 00:35:42,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:35:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-30 00:35:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-11-30 00:35:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 00:35:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-30 00:35:42,183 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 17 [2020-11-30 00:35:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:42,184 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-30 00:35:42,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 00:35:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-30 00:35:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:35:42,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:42,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:42,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:42,407 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]=== [2020-11-30 00:35:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:42,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1673934348, now seen corresponding path program 1 times [2020-11-30 00:35:42,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:42,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373644601] [2020-11-30 00:35:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:42,459 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:42,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387637274] [2020-11-30 00:35:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:42,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:35:42,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:42,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373644601] [2020-11-30 00:35:42,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:42,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387637274] [2020-11-30 00:35:42,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:42,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:35:42,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707375758] [2020-11-30 00:35:42,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:35:42,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:35:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:35:42,571 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 4 states. [2020-11-30 00:35:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:42,673 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-11-30 00:35:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:35:42,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-30 00:35:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:42,676 INFO L225 Difference]: With dead ends: 74 [2020-11-30 00:35:42,676 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 00:35:42,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 00:35:42,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-30 00:35:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:35:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-11-30 00:35:42,700 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 20 [2020-11-30 00:35:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:42,700 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-11-30 00:35:42,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:35:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-11-30 00:35:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:35:42,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:42,701 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:42,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:42,923 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]=== [2020-11-30 00:35:42,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:42,924 INFO L82 PathProgramCache]: Analyzing trace with hash -350771232, now seen corresponding path program 1 times [2020-11-30 00:35:42,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:42,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132500560] [2020-11-30 00:35:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:42,950 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:42,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641510814] [2020-11-30 00:35:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:43,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:35:43,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:43,089 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:43,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:43,147 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:43,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:43,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132500560] [2020-11-30 00:35:43,200 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:43,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641510814] [2020-11-30 00:35:43,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:43,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 00:35:43,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609450465] [2020-11-30 00:35:43,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:35:43,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:43,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:35:43,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:35:43,202 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 7 states. [2020-11-30 00:35:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:43,402 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2020-11-30 00:35:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:35:43,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 00:35:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:43,404 INFO L225 Difference]: With dead ends: 102 [2020-11-30 00:35:43,404 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 00:35:43,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:35:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 00:35:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-11-30 00:35:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 00:35:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-11-30 00:35:43,423 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 21 [2020-11-30 00:35:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:43,423 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-11-30 00:35:43,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:35:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-11-30 00:35:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:35:43,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:43,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:43,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:35:43,645 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]=== [2020-11-30 00:35:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -350711650, now seen corresponding path program 1 times [2020-11-30 00:35:43,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:43,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365578123] [2020-11-30 00:35:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:43,671 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:43,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962856743] [2020-11-30 00:35:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:43,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:35:43,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:43,758 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:35:43,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:43,812 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:43,812 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365578123] [2020-11-30 00:35:43,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962856743] [2020-11-30 00:35:43,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:43,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:35:43,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880161870] [2020-11-30 00:35:43,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:35:43,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:35:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:35:43,870 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 8 states. [2020-11-30 00:35:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:44,073 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-11-30 00:35:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:35:44,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 00:35:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:44,076 INFO L225 Difference]: With dead ends: 60 [2020-11-30 00:35:44,076 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:35:44,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:35:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:35:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:35:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:35:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-30 00:35:44,087 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 21 [2020-11-30 00:35:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:44,089 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-30 00:35:44,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:35:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-30 00:35:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:35:44,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:44,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:44,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:44,301 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]=== [2020-11-30 00:35:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:44,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1962016375, now seen corresponding path program 1 times [2020-11-30 00:35:44,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:44,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380633029] [2020-11-30 00:35:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:44,326 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:35:44,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418963819] [2020-11-30 00:35:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/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 [2020-11-30 00:35:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:44,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:35:44,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:44,393 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:35:44,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:44,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380633029] [2020-11-30 00:35:44,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:35:44,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418963819] [2020-11-30 00:35:44,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:44,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:35:44,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553780101] [2020-11-30 00:35:44,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:35:44,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:44,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:35:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:35:44,450 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 6 states. [2020-11-30 00:35:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:44,625 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-30 00:35:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:35:44,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 00:35:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:44,626 INFO L225 Difference]: With dead ends: 23 [2020-11-30 00:35:44,626 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:35:44,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:35:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:35:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:35:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:35:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:35:44,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-30 00:35:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:44,628 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:44,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:35:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:35:44,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:35:44,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:44,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:35:45,077 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2020-11-30 00:35:45,209 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-30 00:35:45,413 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-11-30 00:35:45,536 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-11-30 00:35:45,539 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2020-11-30 00:35:45,539 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,539 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,539 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) [2020-11-30 00:35:45,539 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,540 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) [2020-11-30 00:35:45,540 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,540 INFO L270 CegarLoopResult]: At program point L11-5(lines 40 41) the Hoare annotation is: (and (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) [2020-11-30 00:35:45,540 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,540 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) [2020-11-30 00:35:45,540 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,540 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 1) (<= ULTIMATE.start_main_~y~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,541 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,542 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:35:45,543 INFO L277 CegarLoopResult]: At program point L58(lines 18 59) the Hoare annotation is: true [2020-11-30 00:35:45,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:35:45,544 INFO L274 CegarLoopResult]: For program point L43(lines 43 51) no Hoare annotation was computed. [2020-11-30 00:35:45,544 INFO L270 CegarLoopResult]: At program point L43-2(lines 35 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start_main_~b~0)) [2020-11-30 00:35:45,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:35:45 BoogieIcfgContainer [2020-11-30 00:35:45,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:35:45,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:35:45,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:35:45,576 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:35:45,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:37" (3/4) ... [2020-11-30 00:35:45,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:35:45,595 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-11-30 00:35:45,596 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:35:45,596 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:35:45,597 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:35:45,676 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9aa328c4-e275-4278-94f4-c3e2bc249bfa/bin/uautomizer/witness.graphml [2020-11-30 00:35:45,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:35:45,678 INFO L168 Benchmark]: Toolchain (without parser) took 9383.70 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 81.8 MB in the beginning and 99.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,678 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 89.5 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:45,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.73 ms. Allocated memory is still 117.4 MB. Free memory was 81.6 MB in the beginning and 92.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.83 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 90.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,680 INFO L168 Benchmark]: Boogie Preprocessor took 34.31 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,681 INFO L168 Benchmark]: RCFGBuilder took 595.81 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 72.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,681 INFO L168 Benchmark]: TraceAbstraction took 8130.47 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 71.8 MB in the beginning and 103.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,682 INFO L168 Benchmark]: Witness Printer took 102.55 ms. Allocated memory is still 146.8 MB. Free memory was 103.6 MB in the beginning and 99.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:45,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 89.5 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.73 ms. Allocated memory is still 117.4 MB. Free memory was 81.6 MB in the beginning and 92.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.83 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 90.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.31 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 595.81 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 72.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8130.47 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 71.8 MB in the beginning and 103.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. * Witness Printer took 102.55 ms. Allocated memory is still 146.8 MB. Free memory was 103.6 MB in the beginning and 99.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: (((((((((((p == 1 && a == p * x + r * y) && 1 <= x) && 1 <= y) && b <= 1) && y <= 1) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && a <= 1) && 1 <= b - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((1 <= y && x <= 1) && y <= 1) && 1 == cond) && s == 1) && q == 0) && 1 <= x) && cond == 1) && b == y - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((p == 1 && a == p * x + r * y) && 1 <= x) && 1 <= y) && b <= 1) && y <= 1) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && a <= 1) && 1 <= b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((1 <= y && x <= 1) && a == x) && y <= 1) && r == 0) && 1 == cond) && s == 1) && p == 1) && 1 <= x) && q == 0) && cond == 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((p == 1 && a == p * x + r * y) && 1 <= x) && 1 <= y) && b <= 1) && y <= 1) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && a <= 1) && 1 <= b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((1 <= y && b <= 1) && y <= 1) && r == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && a <= 1) && 1 <= b - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((b == p * x + r * y && 1 <= y) && y <= 1) && r == 0) && 1 == cond) && 0 <= x) && s == 1) && q == 0) && b == a) && cond == 1) && a <= 1) && 1 <= b - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 201 SDtfs, 949 SDslu, 253 SDs, 0 SdLazy, 373 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 18 NumberOfFragments, 291 HoareAnnotationTreeSize, 9 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 16759 SizeOfPredicates, 68 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 4/4 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...