./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.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_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 824208f274d2d6c45e48ee13ea25c1f3ab36296a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:43:49,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:49,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:49,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:49,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:49,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:49,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:49,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:49,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:49,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:49,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:49,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:49,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:49,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:49,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:49,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:49,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:49,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:49,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:49,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:49,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:49,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:49,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:49,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:49,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:49,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:49,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:49,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:49,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:49,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:49,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:49,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:49,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:49,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:49,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:49,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:49,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:49,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:50,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:50,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:50,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:50,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:43:50,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:50,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:50,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:50,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:50,067 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:50,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:50,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:50,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:43:50,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:50,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:50,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:50,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:50,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:50,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:50,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:50,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:50,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:50,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:50,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:50,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:50,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:50,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:50,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:50,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:50,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:50,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:43:50,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:43:50,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:50,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:50,074 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_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 824208f274d2d6c45e48ee13ea25c1f3ab36296a [2020-11-30 00:43:50,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:50,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:50,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:50,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:50,452 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:50,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2020-11-30 00:43:50,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/data/3f94b02c1/f0e56df367544a25a7975c7e0b48fb46/FLAG11f86a9c5 [2020-11-30 00:43:51,086 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:51,087 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2020-11-30 00:43:51,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/data/3f94b02c1/f0e56df367544a25a7975c7e0b48fb46/FLAG11f86a9c5 [2020-11-30 00:43:51,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/data/3f94b02c1/f0e56df367544a25a7975c7e0b48fb46 [2020-11-30 00:43:51,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:51,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:51,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:51,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:51,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:51,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e05185a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51, skipping insertion in model container [2020-11-30 00:43:51,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:51,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:51,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:51,735 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:51,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:51,773 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:51,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51 WrapperNode [2020-11-30 00:43:51,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:51,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:51,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:51,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:51,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:51,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:51,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:51,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:51,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... [2020-11-30 00:43:51,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:51,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:51,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:51,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:51,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:43:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:51,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:52,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:52,264 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-30 00:43:52,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:52 BoogieIcfgContainer [2020-11-30 00:43:52,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:52,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:52,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:52,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:52,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:51" (1/3) ... [2020-11-30 00:43:52,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c6585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:52, skipping insertion in model container [2020-11-30 00:43:52,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:51" (2/3) ... [2020-11-30 00:43:52,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c6585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:52, skipping insertion in model container [2020-11-30 00:43:52,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:52" (3/3) ... [2020-11-30 00:43:52,300 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2020-11-30 00:43:52,323 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:52,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 00:43:52,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 00:43:52,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:52,379 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:52,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:52,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:52,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:52,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:52,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:52,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:52,396 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-30 00:43:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:43:52,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:52,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:52,403 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 00:43:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash 122552587, now seen corresponding path program 1 times [2020-11-30 00:43:52,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:52,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185305117] [2020-11-30 00:43:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:52,610 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 00:43:52,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185305117] [2020-11-30 00:43:52,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:52,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:52,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288495713] [2020-11-30 00:43:52,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:52,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:52,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:52,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:52,645 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-30 00:43:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:52,694 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2020-11-30 00:43:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:52,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 00:43:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:52,706 INFO L225 Difference]: With dead ends: 79 [2020-11-30 00:43:52,706 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:43:52,710 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 00:43:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:43:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 00:43:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 00:43:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-30 00:43:52,753 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2020-11-30 00:43:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:52,754 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-30 00:43:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-30 00:43:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:43:52,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:52,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:52,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:43:52,757 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 00:43:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:52,758 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-30 00:43:52,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:52,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961659481] [2020-11-30 00:43:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:52,793 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:52,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416191072] [2020-11-30 00:43:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:52,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:43:52,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:52,981 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:43:52,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:43:53,072 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 00:43:53,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961659481] [2020-11-30 00:43:53,072 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:53,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416191072] [2020-11-30 00:43:53,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:53,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:43:53,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90939667] [2020-11-30 00:43:53,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:43:53,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:53,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:43:53,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:53,076 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-11-30 00:43:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:53,350 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-30 00:43:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:43:53,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-30 00:43:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:53,352 INFO L225 Difference]: With dead ends: 51 [2020-11-30 00:43:53,352 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:43:53,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:43:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:43:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2020-11-30 00:43:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:43:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-30 00:43:53,370 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-30 00:43:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:53,371 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-30 00:43:53,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:43:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-30 00:43:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:43:53,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:53,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:53,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:43:53,587 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 00:43:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1182912719, now seen corresponding path program 1 times [2020-11-30 00:43:53,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:53,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763989096] [2020-11-30 00:43:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:53,650 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 00:43:53,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763989096] [2020-11-30 00:43:53,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:53,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:43:53,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054826942] [2020-11-30 00:43:53,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:43:53,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:53,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:43:53,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:43:53,653 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-30 00:43:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:53,674 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-30 00:43:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:43:53,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:43:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:53,676 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:43:53,676 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:43:53,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:43:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:43:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-30 00:43:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:43:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-30 00:43:53,684 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2020-11-30 00:43:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:53,684 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-30 00:43:53,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:43:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-30 00:43:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:43:53,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:53,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:53,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:43:53,689 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 00:43:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:53,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-30 00:43:53,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:53,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419603307] [2020-11-30 00:43:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:53,719 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:53,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439536671] [2020-11-30 00:43:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:53,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:43:53,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:53,796 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:43:53,796 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:43:53,849 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 00:43:53,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419603307] [2020-11-30 00:43:53,850 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:53,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439536671] [2020-11-30 00:43:53,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:53,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:43:53,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68764923] [2020-11-30 00:43:53,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:43:53,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:53,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:43:53,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:53,852 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-11-30 00:43:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:54,173 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-30 00:43:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:43:54,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 00:43:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:54,176 INFO L225 Difference]: With dead ends: 74 [2020-11-30 00:43:54,176 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:43:54,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:43:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-30 00:43:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 00:43:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-30 00:43:54,202 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2020-11-30 00:43:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:54,210 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-30 00:43:54,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:43:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-30 00:43:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:43:54,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:54,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:54,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:54,426 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 00:43:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash 290615803, now seen corresponding path program 1 times [2020-11-30 00:43:54,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:54,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633834973] [2020-11-30 00:43:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:54,445 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:54,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967550412] [2020-11-30 00:43:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:54,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:43:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:54,562 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 00:43:54,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633834973] [2020-11-30 00:43:54,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:54,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967550412] [2020-11-30 00:43:54,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:54,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:43:54,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742480538] [2020-11-30 00:43:54,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:43:54,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:43:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:43:54,566 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-30 00:43:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:54,724 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-11-30 00:43:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:43:54,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:43:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:54,731 INFO L225 Difference]: With dead ends: 104 [2020-11-30 00:43:54,732 INFO L226 Difference]: Without dead ends: 98 [2020-11-30 00:43:54,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 00:43:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-30 00:43:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-11-30 00:43:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:43:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-11-30 00:43:54,759 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2020-11-30 00:43:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:54,759 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-11-30 00:43:54,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:43:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-11-30 00:43:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:43:54,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:54,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:54,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:54,983 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 00:43:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:54,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1284273978, now seen corresponding path program 1 times [2020-11-30 00:43:54,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:54,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070393397] [2020-11-30 00:43:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:54,999 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:54,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975160130] [2020-11-30 00:43:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:43:55,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:55,110 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 00:43:55,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070393397] [2020-11-30 00:43:55,111 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:55,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975160130] [2020-11-30 00:43:55,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:55,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:43:55,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746962805] [2020-11-30 00:43:55,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:55,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:55,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:55,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:55,113 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2020-11-30 00:43:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:55,152 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-11-30 00:43:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:43:55,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 00:43:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:55,158 INFO L225 Difference]: With dead ends: 121 [2020-11-30 00:43:55,158 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 00:43:55,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 00:43:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-30 00:43:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:43:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-11-30 00:43:55,178 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2020-11-30 00:43:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:55,178 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-11-30 00:43:55,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-11-30 00:43:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:43:55,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:55,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:55,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:55,380 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 00:43:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1766286401, now seen corresponding path program 1 times [2020-11-30 00:43:55,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:55,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054586527] [2020-11-30 00:43:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:55,396 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:55,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537471824] [2020-11-30 00:43:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:43:55,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:55,492 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:43:55,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:43:55,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:43:55,588 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 00:43:55,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054586527] [2020-11-30 00:43:55,589 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:55,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537471824] [2020-11-30 00:43:55,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:55,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:43:55,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343458616] [2020-11-30 00:43:55,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:43:55,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:43:55,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:55,592 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2020-11-30 00:43:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:55,842 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-11-30 00:43:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:43:55,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 00:43:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:55,846 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:43:55,846 INFO L226 Difference]: Without dead ends: 80 [2020-11-30 00:43:55,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-30 00:43:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-11-30 00:43:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 00:43:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-11-30 00:43:55,869 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2020-11-30 00:43:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:55,869 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-11-30 00:43:55,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:43:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-11-30 00:43:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:43:55,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:55,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:56,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 00:43:56,087 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 00:43:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -439927536, now seen corresponding path program 1 times [2020-11-30 00:43:56,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:56,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157730634] [2020-11-30 00:43:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:56,102 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:56,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489049829] [2020-11-30 00:43:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:56,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:43:56,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:56,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157730634] [2020-11-30 00:43:56,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:56,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489049829] [2020-11-30 00:43:56,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:56,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:43:56,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079268169] [2020-11-30 00:43:56,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:43:56,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:56,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:43:56,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:56,248 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 6 states. [2020-11-30 00:43:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:56,294 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-11-30 00:43:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:43:56,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 00:43:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:56,296 INFO L225 Difference]: With dead ends: 97 [2020-11-30 00:43:56,296 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 00:43:56,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:43:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 00:43:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 00:43:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:43:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-11-30 00:43:56,303 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2020-11-30 00:43:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:56,304 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-11-30 00:43:56,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:43:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-11-30 00:43:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:43:56,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:56,305 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, 1, 1, 1] [2020-11-30 00:43:56,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:56,506 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2103248441, now seen corresponding path program 1 times [2020-11-30 00:43:56,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:56,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616099619] [2020-11-30 00:43:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:56,529 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:56,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380297108] [2020-11-30 00:43:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/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 00:43:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:56,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:43:56,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616099619] [2020-11-30 00:43:56,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380297108] [2020-11-30 00:43:56,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:56,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:43:56,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649615036] [2020-11-30 00:43:56,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:43:56,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:56,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:43:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:43:56,725 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 7 states. [2020-11-30 00:43:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:56,963 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-30 00:43:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:43:56,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-30 00:43:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:56,965 INFO L225 Difference]: With dead ends: 69 [2020-11-30 00:43:56,965 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:43:56,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:43:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-30 00:43:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:43:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-11-30 00:43:56,976 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2020-11-30 00:43:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:56,977 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-11-30 00:43:56,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:43:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-11-30 00:43:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:43:56,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:56,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:57,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:57,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1945727572, now seen corresponding path program 1 times [2020-11-30 00:43:57,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:57,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772760081] [2020-11-30 00:43:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:57,208 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:57,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506131045] [2020-11-30 00:43:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:57,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:43:57,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:43:57,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772760081] [2020-11-30 00:43:57,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:57,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506131045] [2020-11-30 00:43:57,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:57,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:43:57,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745932653] [2020-11-30 00:43:57,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:57,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:57,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:57,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:57,307 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states. [2020-11-30 00:43:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:57,343 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-11-30 00:43:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:43:57,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-11-30 00:43:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:57,344 INFO L225 Difference]: With dead ends: 47 [2020-11-30 00:43:57,344 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:43:57,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:43:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:43:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:43:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2020-11-30 00:43:57,349 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 27 [2020-11-30 00:43:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:57,349 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2020-11-30 00:43:57,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2020-11-30 00:43:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:43:57,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:57,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:57,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 00:43:57,563 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:57,563 INFO L82 PathProgramCache]: Analyzing trace with hash -187977777, now seen corresponding path program 1 times [2020-11-30 00:43:57,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:57,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076482028] [2020-11-30 00:43:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:57,574 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:57,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847349484] [2020-11-30 00:43:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 00:43:57,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:57,667 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:43:57,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:43:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076482028] [2020-11-30 00:43:57,805 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847349484] [2020-11-30 00:43:57,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:57,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-30 00:43:57,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179029108] [2020-11-30 00:43:57,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:43:57,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:43:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:43:57,807 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 9 states. [2020-11-30 00:43:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:58,187 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-11-30 00:43:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:43:58,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-11-30 00:43:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:58,189 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:43:58,189 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:43:58,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:43:58,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:43:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:43:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:43:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:43:58,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-30 00:43:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:58,191 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:43:58,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:43:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:43:58,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:43:58,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:58,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:43:58,727 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-11-30 00:43:58,980 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-11-30 00:43:59,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,156 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-30 00:43:59,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 (<= 0 ~counter~0) (= ULTIMATE.start_main_~b~0 0)) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse1 (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~q~0 2) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 3 ~counter~0) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2)))))) [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,157 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2020-11-30 00:43:59,158 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ~counter~0) .cse0 (<= ~counter~0 1) (= ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) (and (<= 1 ULTIMATE.start_main_~r~0) .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse3 .cse4 (<= 2 ~counter~0)))) [2020-11-30 00:43:59,158 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2020-11-30 00:43:59,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,158 INFO L277 CegarLoopResult]: At program point L64(lines 23 65) the Hoare annotation is: true [2020-11-30 00:43:59,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,158 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,159 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 (<= 2 ~counter~0)) (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ~counter~0 1) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse0))) [2020-11-30 00:43:59,159 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,159 INFO L270 CegarLoopResult]: At program point L15-3(lines 41 42) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ~counter~0) (<= 1 ULTIMATE.start_main_~y~0) (<= ~counter~0 1) .cse0 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 .cse1 (<= 2 ~counter~0)))) [2020-11-30 00:43:59,159 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,159 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2020-11-30 00:43:59,159 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,159 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2020-11-30 00:43:59,159 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L270 CegarLoopResult]: At program point L15-9(lines 51 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 2 ~counter~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,160 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:43:59,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:43:59,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:59 BoogieIcfgContainer [2020-11-30 00:43:59,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:59,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:59,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:59,195 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:59,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:52" (3/4) ... [2020-11-30 00:43:59,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:43:59,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:43:59,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:43:59,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:43:59,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:43:59,293 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0c77f5e-0ff4-45ef-8d8c-1e83825f126b/bin/uautomizer/witness.graphml [2020-11-30 00:43:59,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:59,294 INFO L168 Benchmark]: Toolchain (without parser) took 7815.64 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 85.8 MB in the beginning and 91.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,295 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:59,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.39 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 92.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.91 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,296 INFO L168 Benchmark]: Boogie Preprocessor took 27.01 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.0 MB in the end (delta: 922.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:59,296 INFO L168 Benchmark]: RCFGBuilder took 419.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 73.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,297 INFO L168 Benchmark]: TraceAbstraction took 6911.08 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 73.3 MB in the beginning and 95.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,297 INFO L168 Benchmark]: Witness Printer took 98.73 ms. Allocated memory is still 138.4 MB. Free memory was 95.6 MB in the beginning and 91.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:59,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.39 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 92.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.91 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 90.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.01 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.0 MB in the end (delta: 922.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 73.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6911.08 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 73.3 MB in the beginning and 95.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. * Witness Printer took 98.73 ms. Allocated memory is still 138.4 MB. Free memory was 95.6 MB in the beginning and 91.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((1 <= counter && 1 <= y) && counter <= 1) && a == 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) && b == y) && y <= r) || ((((((((1 <= r && 1 <= y) && a == 2) && 1 <= cond) && r == x) && b == y * 2) && q == 0) && cond == 1) && 2 <= counter) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((1 <= counter && 1 <= y) && counter <= 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) || ((((((q == 1 && x == r + y) && y <= x) && 2 * r < x) && 1 <= cond) && cond == 1) && 2 <= counter) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((1 <= y && counter <= 0) && a == 0) && r == x) && q == 0) && cond == 1) && 0 <= counter) && b == 0) || (((((((q == 1 && x == r + y) && a == 1) && y <= x) && 2 * r < x) && cond == 1) && 2 <= counter) && b == y)) || (((((1 <= y && q == 2) && 1 <= cond) && 3 <= counter) && cond == 1) && x == r + y * 2) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((q == 1 && x == r + y) && y <= x) && 2 * r < x) && cond == 1) && 2 <= counter) || (((((1 <= counter && 1 <= y) && counter <= 1) && r == x) && q == 0) && cond == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((1 <= y && a == 1) && 1 <= cond) && r == x) && q == 0) && cond == 1) && 2 <= counter) && b == y) && y <= r - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 333 SDtfs, 508 SDslu, 516 SDs, 0 SdLazy, 407 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, 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, 11 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 25 NumberOfFragments, 346 HoareAnnotationTreeSize, 10 FomulaSimplifications, 462 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 20389 SizeOfPredicates, 47 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 9/16 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...